This page has only limited features, please log in for full access.
Salinity stress is one of the major environmental constraints responsible for a reduction in agricultural productivity. This study investigated the effect of exogenously applied nitric oxide (NO) (50 μM and 100 μM) in protecting wheat plants from NaCl-induced oxidative damage by modulating protective mechanisms, including osmolyte accumulation and the antioxidant system. Exogenously sourced NO proved effective in ameliorating the deleterious effects of salinity on the growth parameters studied. NO was beneficial in improving the photosynthetic efficiency, stomatal conductance, and chlorophyll content in normal and NaCl-treated wheat plants. Moreover, NO-treated plants maintained a greater accumulation of proline and soluble sugars, leading to higher relative water content maintenance. Exogenous-sourced NO at both concentrations up-regulated the antioxidant system for averting the NaCl-mediated oxidative damage on membranes. The activity of antioxidant enzymes increased the protection of membrane structural and functional integrity and photosynthetic efficiency. NO application imparted a marked effect on uptake of key mineral elements such as nitrogen (N), potassium (K), and calcium (Ca) with a concomitant reduction in the deleterious ions such as Na+. Greater K and reduced Na uptake in NO-treated plants lead to a considerable decline in the Na/K ratio. Enhancing of salt tolerance by NO was concomitant with an obvious down-regulation in the relative expression of SOS1, NHX1, AQP, and OSM-34, while D2-protein was up-regulated.
Ghalia S. H. Alnusairi; Yasser S. A. Mazrou; Sameer H. Qari; Amr A. Elkelish; Mona H. Soliman; Mohamed Eweis; Khaled Abdelaal; Gomaa Abd El-Samad; Mohamed F. M. Ibrahim; Nihal ElNahhas. Exogenous Nitric Oxide Reinforces Photosynthetic Efficiency, Osmolyte, Mineral Uptake, Antioxidant, Expression of Stress-Responsive Genes and Ameliorates the Effects of Salinity Stress in Wheat. Plants 2021, 10, 1693 .
AMA StyleGhalia S. H. Alnusairi, Yasser S. A. Mazrou, Sameer H. Qari, Amr A. Elkelish, Mona H. Soliman, Mohamed Eweis, Khaled Abdelaal, Gomaa Abd El-Samad, Mohamed F. M. Ibrahim, Nihal ElNahhas. Exogenous Nitric Oxide Reinforces Photosynthetic Efficiency, Osmolyte, Mineral Uptake, Antioxidant, Expression of Stress-Responsive Genes and Ameliorates the Effects of Salinity Stress in Wheat. Plants. 2021; 10 (8):1693.
Chicago/Turabian StyleGhalia S. H. Alnusairi; Yasser S. A. Mazrou; Sameer H. Qari; Amr A. Elkelish; Mona H. Soliman; Mohamed Eweis; Khaled Abdelaal; Gomaa Abd El-Samad; Mohamed F. M. Ibrahim; Nihal ElNahhas. 2021. "Exogenous Nitric Oxide Reinforces Photosynthetic Efficiency, Osmolyte, Mineral Uptake, Antioxidant, Expression of Stress-Responsive Genes and Ameliorates the Effects of Salinity Stress in Wheat." Plants 10, no. 8: 1693.
The effect of foliar treatment with jasmonic acid at 0.5 mM (JA) and biochar (15 ton ha−1) as a soil amendment for the faba bean (Vicia faba L. Sakha 4) was studied under salinity conditions. Salt stress led to a significant decrease in leaf numbers, leaf areas and plants, chlorophyll content, relative water content, and yield parameters. In contrast, reactive oxygen species, the proline concentration, level of malondialdehyde, and amount of electrolyte leakage were noticeably increased during both seasons under salt levels of 1500 and 3000 ppm sodium chloride (NaCl). Also, enzyme activities (i.e., of superoxide dismutase, catalase, peroxidase, and glutathione reductase) were increased, especially under a high level of salinity stress (3000 ppm). Application of biochar, jasmonic acid, or biochar + jasmonic acid significantly reduced the catalase, superoxide dismutase, and glutathione reductase activities in salt-stressed plants to values approaching those of the control (unstressed) plants, especially under 1500 ppm of NaCl stress. Biochar and jasmonic acid treatments mitigated the damaging effects of salinity and improved the plant status as indicated by the plant height, leaf area, relative water content, and chlorophyll a and b concentrations. Moreover, biochar and jasmonic acid treatments of the salt-stressed plants enhanced plant productivity, number of flowers, number of seeds per plant, and weight of 100 seeds during two successive seasons. Overall, this study suggests that biochar or jasmonic acid treatments might be promising for mitigating the detrimental impact of salt stress on faba beans.
Nihal E. Nahhas; Khaled A.A. Abdelaal; Muneera D.F. AlKahtani; Latifa Al Husnain; Hussah I.M. AlGwaiz; Yaser M. Hafez; Kotb A. Attia; Mohamed A. El-Esawi; Mohamed F.M. Ibrahim; Amr Elkelish. Biochar and jasmonic acid application attenuate antioxidative systems and improves growth, physiology, nutrient uptake and productivity of faba bean (Vicia faba L.) irrigated with saline water. Plant Physiology and Biochemistry 2021, 166, 807 -817.
AMA StyleNihal E. Nahhas, Khaled A.A. Abdelaal, Muneera D.F. AlKahtani, Latifa Al Husnain, Hussah I.M. AlGwaiz, Yaser M. Hafez, Kotb A. Attia, Mohamed A. El-Esawi, Mohamed F.M. Ibrahim, Amr Elkelish. Biochar and jasmonic acid application attenuate antioxidative systems and improves growth, physiology, nutrient uptake and productivity of faba bean (Vicia faba L.) irrigated with saline water. Plant Physiology and Biochemistry. 2021; 166 ():807-817.
Chicago/Turabian StyleNihal E. Nahhas; Khaled A.A. Abdelaal; Muneera D.F. AlKahtani; Latifa Al Husnain; Hussah I.M. AlGwaiz; Yaser M. Hafez; Kotb A. Attia; Mohamed A. El-Esawi; Mohamed F.M. Ibrahim; Amr Elkelish. 2021. "Biochar and jasmonic acid application attenuate antioxidative systems and improves growth, physiology, nutrient uptake and productivity of faba bean (Vicia faba L.) irrigated with saline water." Plant Physiology and Biochemistry 166, no. : 807-817.
Plant growth-promoting bacteria play an essential role in enhancing the physical, chemical and biological characters of soils by facilitating nutrient uptake and water flow, especially under abiotic stress conditions, which are major constrains to agricultural development and production. Drought is one of the most harmful abiotic stress and perhaps the most severe problem facing agricultural sustainability, leading to a severe shortage in crop productivity. Drought affects plant growth by causing hormonal and membrane stability perturbations, nutrient imbalance and physiological disorders. Furthermore, drought causes a remarkable decrease in leaf numbers, relative water content, sugar yield, root yield, chlorophyll a and b and ascorbic acid concentrations. However, the concentrations of total phenolic compounds, electrolyte leakage, lipid peroxidation, amounts of proline, and reactive oxygen species are considerably increased because of drought stress. This negative impact of drought can be eliminated by using plant growth-promoting bacteria (PGPB). Under drought conditions, application of PGPB can improve plant growth by adjusting hormonal balance, maintaining nutrient status and producing plant growth regulators. This role of PGPB positively affects physiological and biochemical characteristics, resulting in increased leaf numbers, sugar yield, relative water content, amounts of photosynthetic pigments and ascorbic acid. Conversely, lipid peroxidation, electrolyte leakage and amounts of proline, total phenolic compounds and reactive oxygen species are decreased under drought in the presence of PGPB. The current review gives an overview on the impact of drought on plants and the pivotal role of PGPB in mitigating the negative effects of drought by enhancing antioxidant defense systems and increasing plant growth and yield to improve sustainable agriculture.
Khaled Abdelaal; Muneera AlKahtani; Kotb Attia; Yaser Hafez; Lóránt Király; András Künstler. The Role of Plant Growth-Promoting Bacteria in Alleviating the Adverse Effects of Drought on Plants. Biology 2021, 10, 520 .
AMA StyleKhaled Abdelaal, Muneera AlKahtani, Kotb Attia, Yaser Hafez, Lóránt Király, András Künstler. The Role of Plant Growth-Promoting Bacteria in Alleviating the Adverse Effects of Drought on Plants. Biology. 2021; 10 (6):520.
Chicago/Turabian StyleKhaled Abdelaal; Muneera AlKahtani; Kotb Attia; Yaser Hafez; Lóránt Király; András Künstler. 2021. "The Role of Plant Growth-Promoting Bacteria in Alleviating the Adverse Effects of Drought on Plants." Biology 10, no. 6: 520.
We investigated the impact of Bacillus thuringiensis as seed treatment and application with silicon on lettuce plants exposed to salinity levels (4 dS m−1 and 8 dS m−1). Results revealed that leaves number, head weight, total yield, relative water content (RWC), and chlorophyll a and b declined considerably due to two salinity levels. Oxidative stress markers, i.e., hydrogen peroxide (H2O2), superoxide (O2−), and lipid peroxidation (MDA) dramatically augmented in stressed plants. On the other hand, leaves number, total yield, RWC, and chlorophyll a, b in stressed lettuce plants were considerably enhanced because of the application of Si or B. thuringiensis. In contrast, EL%, MDA, and H2O2 were considerably reduced in treated lettuce plants with Si and B. thuringiensis. In addition, the treatment with Si and B. thuringiensis increased head weight (g) and total yield (ton hectare-1), and caused up-regulation of proline and catalase, superoxide dismutase, peroxidase, and polyphenol oxidase activity in lettuce leaves under salinity conditions.
Muneera Alkahtani; Yaser Hafez; Kotb Attia; Talal Al-Ateeq; Mohamed Ali; Mirza Hasanuzzaman; Khaled Abdelaal. Bacillus thuringiensis and Silicon Modulate Antioxidant Metabolism and Improve the Physiological Traits to Confer Salt Tolerance in Lettuce. Plants 2021, 10, 1025 .
AMA StyleMuneera Alkahtani, Yaser Hafez, Kotb Attia, Talal Al-Ateeq, Mohamed Ali, Mirza Hasanuzzaman, Khaled Abdelaal. Bacillus thuringiensis and Silicon Modulate Antioxidant Metabolism and Improve the Physiological Traits to Confer Salt Tolerance in Lettuce. Plants. 2021; 10 (5):1025.
Chicago/Turabian StyleMuneera Alkahtani; Yaser Hafez; Kotb Attia; Talal Al-Ateeq; Mohamed Ali; Mirza Hasanuzzaman; Khaled Abdelaal. 2021. "Bacillus thuringiensis and Silicon Modulate Antioxidant Metabolism and Improve the Physiological Traits to Confer Salt Tolerance in Lettuce." Plants 10, no. 5: 1025.
Essential oils are widely used as botanical insecticides rather than chemically synthesized pesticides which led to catastrophic effects on humans, the environment, and eutrophication. Here, encapsulation of four essential oils Basilicum ocimum, Cuminum cyminum, Origanum marjorana, and Matricaria chamomilla were utilized in the presence of 3% v/v ethanol, as anti-insect against Aphis craccivora and compared to traditional insecticides dinotefuran and pymetrozine. Different tools were used to characterize the prepared nanoemulsion such as TEM, SEM, and Zeta potential analyzer. Besides, selected B. ocimum and C. cyminum were analyzed by gas chromatography-mass GC/mass spectrometry. The results reveal that nanoemulsion exhibited considerable toxic activities against laboratory and field strains of cowpea aphid. In the toxicity bioassay test of essential oils, moderate mortality was observed at 10,000 mg/L against aphid with lethal concentration that kills 50% of insects (LC50) values of basil 992 mg/L and marjoram 3162 mg/L. Else, nanoemulsion provided the highest mortality rate at 625 mg/L and the LC50 values of basil nanoemulsion (NE) 45 mg/L, and marjoram NE 188 mg/L in laboratory strains. The systemic effects of the tested substances acetylcholine esterase, alkaline phosphatase, β-esterases, glutathione S-transferase (GST), and mixed-function oxidase (MFO) enzymes on insects were found to be significantly decreased and increased when compared with control groups. Overall, these results highlight that the nanoemulsion is potential tools to control cowpea aphid and could be useful in developing integrated insect management in faba bean fields.
Khaled Abdelaal; Mamdouh Essawy; Attia Quraytam; Fahmy Abdallah; Heba Mostafa; Kamel Shoueir; Hatem Fouad; Fahmy Hassan; Yaser Hafez. Toxicity of Essential Oils Nanoemulsion Against Aphis Craccivora and Their Inhibitory Activity on Insect Enzymes. Processes 2021, 9, 624 .
AMA StyleKhaled Abdelaal, Mamdouh Essawy, Attia Quraytam, Fahmy Abdallah, Heba Mostafa, Kamel Shoueir, Hatem Fouad, Fahmy Hassan, Yaser Hafez. Toxicity of Essential Oils Nanoemulsion Against Aphis Craccivora and Their Inhibitory Activity on Insect Enzymes. Processes. 2021; 9 (4):624.
Chicago/Turabian StyleKhaled Abdelaal; Mamdouh Essawy; Attia Quraytam; Fahmy Abdallah; Heba Mostafa; Kamel Shoueir; Hatem Fouad; Fahmy Hassan; Yaser Hafez. 2021. "Toxicity of Essential Oils Nanoemulsion Against Aphis Craccivora and Their Inhibitory Activity on Insect Enzymes." Processes 9, no. 4: 624.
Drought stress deleteriously affects growth, development and productivity in plants. So, we examined the silicon effect (2 mmol) and proline (10 mmol) individually or the combination (Si + proline) in alleviating the harmful effect of drought on total phenolic compounds, reactive oxygen species (ROS), chlorophyll concentration and antioxidant enzymes as well as yield parameters of drought-stressed sugar beet plants during 2018/2019 and 2019/2020 seasons. Our findings indicated that the root diameter and length (cm), root and shoot fresh weights (g plant−1) as well as root and sugar yield significantly decreased in sugar beet plants under drought. Relative water content (RWC), nitrogen (N), phosphorus (P) and potassium (K) contents and chlorophyll (Chl) concentration considerably reduced in stressed sugar beet plants that compared with control in both seasons. Nonetheless, lipid peroxidation (MDA), electrolyte leakage (EL), hydrogen peroxide (H2O2) and superoxide (O2 ●−) considerably elevated as signals of drought. Drought-stressed sugar beet plants showed an increase in proline accumulation, total phenolic compounds and up-regulation of antioxidant enzymes catalase (CAT) and superoxide dismutase (SOD) activity to mitigate drought effects. Si and proline individually or the combination Si + proline considerably increased root and sugar yield, sucrose%, Chl concentration and RWC, MDA and EL were remarkably reduced. The treatments led to adjust proline and total phenolic compounds as well as CAT and SOD activity in stressed sugar beet plants. We concluded that application of Si + proline under drought stress led to improve the resistance of sugar beet by regulating of proline, antioxidant enzymes, phenolic compounds and improving RWC, Chl concentration and Nitrogen, Phosphorus and Potassium (NPK) contents as well as yield parameters.
Muneera AlKahtani; Yaser Hafez; Kotb Attia; Emadeldeen Rashwan; Latifa Husnain; Hussah AlGwaiz; Khaled Abdelaal. Evaluation of Silicon and Proline Application on the Oxidative Machinery in Drought-Stressed Sugar Beet. Antioxidants 2021, 10, 398 .
AMA StyleMuneera AlKahtani, Yaser Hafez, Kotb Attia, Emadeldeen Rashwan, Latifa Husnain, Hussah AlGwaiz, Khaled Abdelaal. Evaluation of Silicon and Proline Application on the Oxidative Machinery in Drought-Stressed Sugar Beet. Antioxidants. 2021; 10 (3):398.
Chicago/Turabian StyleMuneera AlKahtani; Yaser Hafez; Kotb Attia; Emadeldeen Rashwan; Latifa Husnain; Hussah AlGwaiz; Khaled Abdelaal. 2021. "Evaluation of Silicon and Proline Application on the Oxidative Machinery in Drought-Stressed Sugar Beet." Antioxidants 10, no. 3: 398.
Broomrape parasitism on faba bean (Vicia faba L.) is the most destructive factor for this crop in Egypt. Pot experiments were conducted during the two successive seasons 2017/2018 and 2018/2019 to study the mitigation of broomrape stress on faba bean using a ten-fold dilution of 10% (w/v) spent mushroom substrate extract (SMSE) of Pleurotus ostreatus and the same dilution of culture filtrate of mushroom (MCF) grown in potato dextrose broth (PDB) at a rate of 48 l hectare−1 compared with the commercial herbicide Roundup (Glyphosate 48% emulsifiable concentrate) at a rate of 144 cm3 ha−1 on the two varieties (Misr3 and Sakha3) cultivated in broomrape-infested soil. The treatments include the use of mushroom products as foliar spray and/or soil amendment in addition to Roundup spraying as a recommended treatment. Using Gas Chromatography-Mass Spectrometry (GC-MS) spectroscopy, our results indicate that the major components of the two mushroom products were bioactive compounds such as polyphenol and high molecular weight aliphatic and aromatic hydrocarbons that may interfere with parasite and host metabolism. These results indicated that SMSE of P. ostreatus and MCF of the same mushroom grown in potato dextrose broth (PDB) gave the best control of broomrape, and increased plant height, root length, leaf area, chlorophyll concentration, relative water content and seed yield (g plant−1), as well as anatomical characters of leaves in the two faba bean varieties (Misr3 and Sakha3), such as upper and lower epidermis, palisade tissue, spongy tissue and vascular bundles. Additionally, electrolyte leakage was decreased in the treated plants compared to control plants and the plants treated with Roundup (glyphosate) because of the important role of SMSE and MCF in the improvement of faba bean water status.
Tamer Elsakhawy; Muneera D. F. Alkahtani; Ali A. H. Sharshar; Kotb A. Attia; Yaser M. Hafez; Khaled A. A. Abdelaal. Efficacy of Mushroom Metabolites (Pleurotus ostreatus) as A Natural Product for the Suppression of Broomrape Growth (Orobanche crenata Forsk) in Faba Bean Plants. Plants 2020, 9, 1265 .
AMA StyleTamer Elsakhawy, Muneera D. F. Alkahtani, Ali A. H. Sharshar, Kotb A. Attia, Yaser M. Hafez, Khaled A. A. Abdelaal. Efficacy of Mushroom Metabolites (Pleurotus ostreatus) as A Natural Product for the Suppression of Broomrape Growth (Orobanche crenata Forsk) in Faba Bean Plants. Plants. 2020; 9 (10):1265.
Chicago/Turabian StyleTamer Elsakhawy; Muneera D. F. Alkahtani; Ali A. H. Sharshar; Kotb A. Attia; Yaser M. Hafez; Khaled A. A. Abdelaal. 2020. "Efficacy of Mushroom Metabolites (Pleurotus ostreatus) as A Natural Product for the Suppression of Broomrape Growth (Orobanche crenata Forsk) in Faba Bean Plants." Plants 9, no. 10: 1265.
Desert plants are able to survive under harsh environmental stresses inherent to arid and semiarid regions due to their association with bacterial endophytes. However, the identity, functions, and the factors that influence the association of bacterial endophytes with desert plants are poorly known. These bacterial endophytes can be used as an untapped resource to favor plant growth and development in agro-ecosystems of arid regions. The present study is therefore focused on the isolation and identification of bacterial endophytes from two native medicinal plants (Fagonia mollis Delile and Achillea fragrantissima (Forssk) Sch. Bip.) growing spontaneously in the arid region of the South Sinai (Egypt), and characterization of their plant growth promoting (PGP) traits. Thirteen putative bacterial endophytes were isolated from the leaves of both plant species and characterized for their plant growth promoting abilities using molecular and biochemical approaches, as well as greenhouse trials. Selected endophytic bacterial strains were applied to maize plants (Zea mays L. var. Single cross Pioneer 30K08) to further evaluate their PGP abilities under greenhouse conditions. Isolated bacterial strains have variable plant growth promoting activities. Among these activities, isolated bacterial endophytes have the efficacy of phosphate solubilizing with clear zones ranging from 7.6 ± 0.3 to 9.6 ± 0.3 mm. Additionally, the obtained bacterial endophytes increased the productivity of indole acetic acid (IAA) in broth media from 10 to 60 µg·mL−1 with increasing tryptophan concentration from 1 to 5 mg·mL−1. Bacillus and Brevibacillus strains were frequently isolated from the leaves of both plant species, and had significant positive effects on plant growth and shoot phosphorus (P) and nitrogen (N) contents. Results suggest that these endophytes are good candidates as plant growth promoting inoculants to help reduce chemical input in conventional agricultural practices and increase nutrient uptake and stress resilience in plant species.
Muneera D. F. Alkahtani; Amr Fouda; Kotb A. Attia; Fahad Al-Otaibi; Ahmed M. Eid; Emad El-Din Ewais; Mohamed Hijri; Marc St-Arnaud; Saad El-Din Hassan; Naeem Khan; Yaser M. Hafez; Khaled A. A. Abdelaal. Isolation and Characterization of Plant Growth Promoting Endophytic Bacteria from Desert Plants and Their Application as Bioinoculants for Sustainable Agriculture. Agronomy 2020, 10, 1325 .
AMA StyleMuneera D. F. Alkahtani, Amr Fouda, Kotb A. Attia, Fahad Al-Otaibi, Ahmed M. Eid, Emad El-Din Ewais, Mohamed Hijri, Marc St-Arnaud, Saad El-Din Hassan, Naeem Khan, Yaser M. Hafez, Khaled A. A. Abdelaal. Isolation and Characterization of Plant Growth Promoting Endophytic Bacteria from Desert Plants and Their Application as Bioinoculants for Sustainable Agriculture. Agronomy. 2020; 10 (9):1325.
Chicago/Turabian StyleMuneera D. F. Alkahtani; Amr Fouda; Kotb A. Attia; Fahad Al-Otaibi; Ahmed M. Eid; Emad El-Din Ewais; Mohamed Hijri; Marc St-Arnaud; Saad El-Din Hassan; Naeem Khan; Yaser M. Hafez; Khaled A. A. Abdelaal. 2020. "Isolation and Characterization of Plant Growth Promoting Endophytic Bacteria from Desert Plants and Their Application as Bioinoculants for Sustainable Agriculture." Agronomy 10, no. 9: 1325.
Salinity stress deleteriously affects the growth and yield of many plants. Plant growth promoting rhizobacteria (PGPR) and chitosan both play an important role in combating salinity stress and improving plant growth under adverse environmental conditions. The present study aimed to evaluate the impacts of PGPR and chitosan on the growth of sweet pepper plant grown under different salinity regimes. For this purpose, two pot experiments were conducted in 2019 and 2020 to evaluate the role of PGPR (Bacillus thuringiensis MH161336 106–8 CFU/cm3) applied as seed treatment and foliar application of chitosan (30 mg dm−3) on sweet pepper plants (cv. Yolo Wonder) under two salinity concentrations (34 and 68 mM). Our findings revealed that, the chlorophyll fluorescence parameter (Fv/Fm ratio), chlorophyll a and b concentrations, relative water content (RWC), and fruit yield characters were negatively affected and significantly reduced under salinity conditions. The higher concentration was more harmful. Nevertheless, electrolyte leakage, lipid peroxidation, hydrogen peroxide (H2O2), and superoxide (O2−) significantly increased in stressed plants. However, the application of B. thuringiensis and chitosan led to improved plant growth and resulted in a significant increase in RWC, chlorophyll content, chlorophyll fluorescence parameter (Fv/Fm ratio), and fruit yield. Conversely, lipid peroxidation, electrolyte leakage, O2−, and H2O2 were significantly reduced in stressed plants. Also, B. thuringiensis and chitosan application regulated the proline accumulation and enzyme activity, as well as increased the number of fruit plant−1, fruit fresh weight plant−1, and total fruit yield of sweet pepper grown under saline conditions
Muneera D. F. Alkahtani; M. Hafez; Naeem Khan; Ahmed Eid; Mohamed A. M. Ali; Khaled Abdelaal. Chlorophyll Fluorescence Parameters and Antioxidant Defense System Can Display Salt Tolerance of Salt Acclimated Sweet Pepper Plants Treated with Chitosan and Plant Growth Promoting Rhizobacteria. Agronomy 2020, 10, 1180 .
AMA StyleMuneera D. F. Alkahtani, M. Hafez, Naeem Khan, Ahmed Eid, Mohamed A. M. Ali, Khaled Abdelaal. Chlorophyll Fluorescence Parameters and Antioxidant Defense System Can Display Salt Tolerance of Salt Acclimated Sweet Pepper Plants Treated with Chitosan and Plant Growth Promoting Rhizobacteria. Agronomy. 2020; 10 (8):1180.
Chicago/Turabian StyleMuneera D. F. Alkahtani; M. Hafez; Naeem Khan; Ahmed Eid; Mohamed A. M. Ali; Khaled Abdelaal. 2020. "Chlorophyll Fluorescence Parameters and Antioxidant Defense System Can Display Salt Tolerance of Salt Acclimated Sweet Pepper Plants Treated with Chitosan and Plant Growth Promoting Rhizobacteria." Agronomy 10, no. 8: 1180.
Silicon is one of the most significant elements in plants under abiotic stress, so we investigated the role of silicon in alleviation of the detrimental effects of salinity at two concentrations (1500 and 3000 ppm sodium chloride) in sweet pepper plants in two seasons (2018 and 2019). Our results indicated that relative water content, concentrations of chlorophyll a and b, nitrogen, phosphorus and potassium contents, number of fruits plant−1, fruit fresh weight plant−1 (g) and fruit yield (ton hectare−1) significantly decreased in salt-stressed sweet pepper plants as compared to control plants. In addition, electrolyte leakage, proline, lipid peroxidation, superoxide (O2−) and hydrogen peroxide (H2O2) levels, soluble sugars, sucrose, and starch content as well as sodium content significantly increased under salinity conditions. Conversely, foliar application of silicon led to improvements in concentrations of chlorophyll a and b and mineral nutrients, water status, and fruit yield of sweet pepper plants. Furthermore, lipid peroxidation, electrolyte leakage, levels of superoxide, and hydrogen peroxide were decreased with silicon treatments.
Khaled A. A. Abdelaal; Yasser S.A. Mazrou; Yaser M. Hafez. Silicon Foliar Application Mitigates Salt Stress in Sweet Pepper Plants by Enhancing Water Status, Photosynthesis, Antioxidant Enzyme Activity and Fruit Yield. Plants 2020, 9, 733 .
AMA StyleKhaled A. A. Abdelaal, Yasser S.A. Mazrou, Yaser M. Hafez. Silicon Foliar Application Mitigates Salt Stress in Sweet Pepper Plants by Enhancing Water Status, Photosynthesis, Antioxidant Enzyme Activity and Fruit Yield. Plants. 2020; 9 (6):733.
Chicago/Turabian StyleKhaled A. A. Abdelaal; Yasser S.A. Mazrou; Yaser M. Hafez. 2020. "Silicon Foliar Application Mitigates Salt Stress in Sweet Pepper Plants by Enhancing Water Status, Photosynthesis, Antioxidant Enzyme Activity and Fruit Yield." Plants 9, no. 6: 733.
The impact of biochar and chitosan on barley plants under drought stress conditions was investigated during two field experiments. Our results confirmed that drought stress negatively affected morphological and physiological growth traits of barley plants such as plant height, number of leaves, chlorophyll concentrations, and relative water content. However, electrolyte leakage (EL%), lipid peroxidation (MDA), soluble sugars, sucrose and starch contents significantly increased as a response to drought stress. Additionally, 1000 grain weight, grains yield ha−1 and biological yield significantly decreased in stressed barley plants, also anatomical traits such as upper epidermis, lower epidermis, lamina, and mesophyll tissue thickness as well as vascular bundle diameter of flag leaves significantly decreased compared with control. The use of biochar and chitosan led to significant increases in plant height, number of leaves, and chlorophyll concentrations as well as relative water content; nevertheless these treatments led to significant decreases in electrolyte leakage (EL%) and lipid peroxidation (MDA) in the stressed plants. Moreover, anatomical and yield characters of stressed barley plants were improved with application of biochar and chitosan. The results proved the significance of biochar and chitosan in alleviating the damaging impacts of drought on barley plants.
Yaser Hafez; Kotb Attia; Salman Alamery; Abdelhalim Ghazy; Abdullah Al-Doss; Eid Ibrahim; Emad Rashwan; Lamiaa El-Maghraby; Ahmed Awad; Khaled Abdelaal. Beneficial Effects of Biochar and Chitosan on Antioxidative Capacity, Osmolytes Accumulation, and Anatomical Characters of Water-Stressed Barley Plants. Agronomy 2020, 10, 630 .
AMA StyleYaser Hafez, Kotb Attia, Salman Alamery, Abdelhalim Ghazy, Abdullah Al-Doss, Eid Ibrahim, Emad Rashwan, Lamiaa El-Maghraby, Ahmed Awad, Khaled Abdelaal. Beneficial Effects of Biochar and Chitosan on Antioxidative Capacity, Osmolytes Accumulation, and Anatomical Characters of Water-Stressed Barley Plants. Agronomy. 2020; 10 (5):630.
Chicago/Turabian StyleYaser Hafez; Kotb Attia; Salman Alamery; Abdelhalim Ghazy; Abdullah Al-Doss; Eid Ibrahim; Emad Rashwan; Lamiaa El-Maghraby; Ahmed Awad; Khaled Abdelaal. 2020. "Beneficial Effects of Biochar and Chitosan on Antioxidative Capacity, Osmolytes Accumulation, and Anatomical Characters of Water-Stressed Barley Plants." Agronomy 10, no. 5: 630.
The effect of bio-agent Bacillus subtilus, nano titanium dioxide (TiO2) and Zinc oxide (ZnO) as well as the combination compared with fungicide (Topas100) was investigated under laboratory (in vitro) and greenhouse conditions against powdery mildew disease caused by Podosphaera xanthii. Most of treatments were strong to inhibit the spore germination of P. xanthii. B. subtilus and B. subtilus + nano-Tio2 were the most effective followed by Topas100, B. subtilus + nano-ZnO, nano-ZnO and Nano-TiO2 compared with control. Most of treatments significantly reduced the disease symptoms and diseases severity (%) particularly bio-agent, nano-ZnO and combination of B. subtilus + nano-ZnO, however, the fungicide treatment showed the best inhibition. As a consequence of treatments histo-biochemical and growth parameters of cucumber were changed. Reactive oxygen species (hydrogen peroxide and superoxide) were accumulated early. Chlorophyll content, catalase, peroxidase, and polyphenol oxidase activities were increased under various treatments, however, electrolyte leakage (EL) was decreased. The growth characters e.g. plant height, leaves number, fresh and dry weight/plant was significantly improved because of treatments. Combined of B. subtilus and nano-Zinc oxide treatment was the best treatment and promising to be an alternative to fungicide, consequently, decreasing the environmental pollution, cost and harmful effect of fungicide on human health.
Yaser M. Hafez; Kotb A. Attia; Said Kamel; Salman F. Alamery; Safaa El-Gendy; Abdullah A. Al-Doss; Farid Mehiar; Abdelhalim I. Ghazy; Eid I. Ibrahim; Khaled A.A. Abdelaal. Bacillus subtilis as a bio-agent combined with nano molecules can control powdery mildew disease through histochemical and physiobiochemical changes in cucumber plants. Physiological and Molecular Plant Pathology 2020, 111, 101489 .
AMA StyleYaser M. Hafez, Kotb A. Attia, Said Kamel, Salman F. Alamery, Safaa El-Gendy, Abdullah A. Al-Doss, Farid Mehiar, Abdelhalim I. Ghazy, Eid I. Ibrahim, Khaled A.A. Abdelaal. Bacillus subtilis as a bio-agent combined with nano molecules can control powdery mildew disease through histochemical and physiobiochemical changes in cucumber plants. Physiological and Molecular Plant Pathology. 2020; 111 ():101489.
Chicago/Turabian StyleYaser M. Hafez; Kotb A. Attia; Said Kamel; Salman F. Alamery; Safaa El-Gendy; Abdullah A. Al-Doss; Farid Mehiar; Abdelhalim I. Ghazy; Eid I. Ibrahim; Khaled A.A. Abdelaal. 2020. "Bacillus subtilis as a bio-agent combined with nano molecules can control powdery mildew disease through histochemical and physiobiochemical changes in cucumber plants." Physiological and Molecular Plant Pathology 111, no. : 101489.
Chilling, a sort of cold stress, is a typical abiotic ecological stress that impacts the development as well as the growth of crops. The present study was carried to investigate the role of ascorbic acid root priming in enhancing tolerance of tomato seedlings against acute chilling stress. The treatments included untreated control, ascorbic acid-treated plants (AsA; 0.5 mM), acute chilling-stressed plants (4 °C), and chilling stressed seedlings treated by ascorbic acid. Exposure to acute chilling stress reduced growth in terms of length, fresh and dry biomass, pigment synthesis, and photosynthesis. AsA was effective in mitigating the injurious effects of chilling stress to significant levels when supplied at 0.5 mM concentrations. AsA priming reduced the chilling mediated oxidative damage by lowering the electrolyte leakage, lipid peroxidation, and hydrogen peroxide. Moreover, up regulating the activity of enzymatic components of the antioxidant system. Further, 0.5 mM AsA proved beneficial in enhancing ions uptake in normal and chilling stressed seedlings. At the gene expression level, AsA significantly lowered the expression level of CAT and heat shock protein genes. Therefore, we theorize that the implementation of exogenous AsA treatment reduced the negative effects of severe chilling stress on tomato.
Amr Elkelish; Sameer H. Qari; Yasser S. A. Mazrou; Khaled A. A. Abdelaal; Yaser M. Hafez; Abdelghafar M. Abu-Elsaoud; Gaber El-Saber Batiha; Mohamed A. El-Esawi; Nihal El Nahhas. Exogenous Ascorbic Acid Induced Chilling Tolerance in Tomato Plants Through Modulating Metabolism, Osmolytes, Antioxidants, and Transcriptional Regulation of Catalase and Heat Shock Proteins. Plants 2020, 9, 431 .
AMA StyleAmr Elkelish, Sameer H. Qari, Yasser S. A. Mazrou, Khaled A. A. Abdelaal, Yaser M. Hafez, Abdelghafar M. Abu-Elsaoud, Gaber El-Saber Batiha, Mohamed A. El-Esawi, Nihal El Nahhas. Exogenous Ascorbic Acid Induced Chilling Tolerance in Tomato Plants Through Modulating Metabolism, Osmolytes, Antioxidants, and Transcriptional Regulation of Catalase and Heat Shock Proteins. Plants. 2020; 9 (4):431.
Chicago/Turabian StyleAmr Elkelish; Sameer H. Qari; Yasser S. A. Mazrou; Khaled A. A. Abdelaal; Yaser M. Hafez; Abdelghafar M. Abu-Elsaoud; Gaber El-Saber Batiha; Mohamed A. El-Esawi; Nihal El Nahhas. 2020. "Exogenous Ascorbic Acid Induced Chilling Tolerance in Tomato Plants Through Modulating Metabolism, Osmolytes, Antioxidants, and Transcriptional Regulation of Catalase and Heat Shock Proteins." Plants 9, no. 4: 431.
Potentially toxic elements (PTEs)-induced genotoxicity on aquatic plants is still an open question. Herein, a single clone from a population of water hyacinth covering a large distribution area of Nile River (freshwater) was transplanted in two drainage water resources to explore the hazardous effect of PTEs on molecular, biochemical and anatomical characters of plants compared to those grown in freshwater. Inductivity Coupled Plasma (ICP) analysis indicated that PTEs concentrations in water resources were relatively low in most cases. However, the high tendency of water hyacinth to bio-accumulate and bio-magnify PTEs maximized their concentrations in plant samples (roots in particular). A Random Amplified Polymorphic DNA (RAPD) assay showed the genotoxic effects of PTEs on plants grown in drainage water. PTEs accumulation caused substantial alterations in DNA profiles including the presence or absence of certain bands and even the appearance of new bands. Plants grown in drainage water exhibited several mutations on the electrophoretic profiles and banding pattern of total protein, especially proteins isolated from roots. Several anatomical deteriorations were observed on PTEs-stressed plants including reductions in the thickness of epidermis, cortex and endodermis as well as vascular cylinder diameter. The research findings of this investigation may provide some new insights regarding molecular, biochemical and anatomical responses of water hyacinth grown in drainage water resources.
Farahat S. Moghanm; Antar El-Banna; Mohamed A. El-Esawi; Mohamed M. Abdel-Daim; Ahmed Mosa; Khaled A.A. Abdelaal. Genotoxic and Anatomical Deteriorations Associated with Potentially Toxic Elements Accumulation in Water Hyacinth Grown in Drainage Water Resources. Sustainability 2020, 12, 2147 .
AMA StyleFarahat S. Moghanm, Antar El-Banna, Mohamed A. El-Esawi, Mohamed M. Abdel-Daim, Ahmed Mosa, Khaled A.A. Abdelaal. Genotoxic and Anatomical Deteriorations Associated with Potentially Toxic Elements Accumulation in Water Hyacinth Grown in Drainage Water Resources. Sustainability. 2020; 12 (5):2147.
Chicago/Turabian StyleFarahat S. Moghanm; Antar El-Banna; Mohamed A. El-Esawi; Mohamed M. Abdel-Daim; Ahmed Mosa; Khaled A.A. Abdelaal. 2020. "Genotoxic and Anatomical Deteriorations Associated with Potentially Toxic Elements Accumulation in Water Hyacinth Grown in Drainage Water Resources." Sustainability 12, no. 5: 2147.
Barley is a very important crop worldwide and has good impact in preserving food security. The impacts of 10 mM proline and 0.5 mM salicylic acid were evaluated on water stressed barley plants (Hordeum vulgare L. Giza126). Salicylic acid and proline treatments led to increased stem length, plant dry weights, chlorophyll concentration, relative water content, activity of antioxidant enzymes, and grain yield under drought stress. Nevertheless, lipid peroxidation, electrolyte leakage (EL), superoxide (O2·−), and hydrogen peroxide (H2O2) significantly decreased in treated barley plants with proline and salicylic acid in both growing seasons as compared with drought treatment only, which caused significant decrease in stem length, plant dry weights, chlorophyll concentration, activity of antioxidant enzymes, as well as biological and grain yield. These results demonstrated the importance of salicylic acid and proline as tolerance inducers of drought stress in barley plants.
Khaled A. A. Abdelaal; Kotb A. Attia; Salman F. Alamery; Mohamed M. El-Afry; Abdelhalim I. Ghazy; Dalia S. Tantawy; Abdullah A. Al-Doss; El-Sayed E. El-Shawy; Abdelghafar M. Abu-Elsaoud; Yaser M. Hafez. Exogenous Application of Proline and Salicylic Acid can Mitigate the Injurious Impacts of Drought Stress on Barley Plants Associated with Physiological and Histological Characters. Sustainability 2020, 12, 1736 .
AMA StyleKhaled A. A. Abdelaal, Kotb A. Attia, Salman F. Alamery, Mohamed M. El-Afry, Abdelhalim I. Ghazy, Dalia S. Tantawy, Abdullah A. Al-Doss, El-Sayed E. El-Shawy, Abdelghafar M. Abu-Elsaoud, Yaser M. Hafez. Exogenous Application of Proline and Salicylic Acid can Mitigate the Injurious Impacts of Drought Stress on Barley Plants Associated with Physiological and Histological Characters. Sustainability. 2020; 12 (5):1736.
Chicago/Turabian StyleKhaled A. A. Abdelaal; Kotb A. Attia; Salman F. Alamery; Mohamed M. El-Afry; Abdelhalim I. Ghazy; Dalia S. Tantawy; Abdullah A. Al-Doss; El-Sayed E. El-Shawy; Abdelghafar M. Abu-Elsaoud; Yaser M. Hafez. 2020. "Exogenous Application of Proline and Salicylic Acid can Mitigate the Injurious Impacts of Drought Stress on Barley Plants Associated with Physiological and Histological Characters." Sustainability 12, no. 5: 1736.
Salinity stress occurs due to the accumulation of high levels of salts in soil, which ultimately leads to the impairment of plant growth and crop loss. Stress tolerance-inducing compounds have a remarkable ability to improve growth and minimize the effects of salinity stress without negatively affecting the environment by controlling the physiological and molecular activities in plants. Two pot experiments were carried out in 2017 and 2018 to study the influence of salicylic acid (1 mM), yeast extract (6 g L−1), and proline (10 mM) on the physiological and biochemical parameters of sweet pepper plants under saline conditions (2000 and 4000 ppm). The results showed that salt stress led to decreasing the chlorophyll content, relative water content, and fruit yields, whereas electrolyte leakage, malondialdehyde (MDA), proline concentration, reactive oxygen species (ROS), and the activities of antioxidant enzymes increased in salt-stressed plants. The application of salicylic acid (1 mM), yeast extract (6 g L−1), and proline (10 mM) markedly improved the physiological characteristics and fruit yields of salt-stressed plants compared with untreated stressed plants. A significant reduction in electrolyte leakage, MDA, and ROS was also recorded for all treatments. In conclusion, our results reveal the important role of proline, SA, and yeast extracts in enhancing sweet pepper growth and tolerance to salinity stress via modulation of the physiological parameters and antioxidants machinery. Interestingly, proline proved to be the best treatment.
Khaled A. Abdelaal; Lamiaa M. El-Maghraby; Hosam Elansary; Yaser M. Hafez; Eid Ibrahim; Mostafa El-Banna; Mohamed El-Esawi; Amr Elkelish. Treatment of Sweet Pepper with Stress Tolerance-Inducing Compounds Alleviates Salinity Stress Oxidative Damage by Mediating the Physio-Biochemical Activities and Antioxidant Systems. Agronomy 2019, 10, 26 .
AMA StyleKhaled A. Abdelaal, Lamiaa M. El-Maghraby, Hosam Elansary, Yaser M. Hafez, Eid Ibrahim, Mostafa El-Banna, Mohamed El-Esawi, Amr Elkelish. Treatment of Sweet Pepper with Stress Tolerance-Inducing Compounds Alleviates Salinity Stress Oxidative Damage by Mediating the Physio-Biochemical Activities and Antioxidant Systems. Agronomy. 2019; 10 (1):26.
Chicago/Turabian StyleKhaled A. Abdelaal; Lamiaa M. El-Maghraby; Hosam Elansary; Yaser M. Hafez; Eid Ibrahim; Mostafa El-Banna; Mohamed El-Esawi; Amr Elkelish. 2019. "Treatment of Sweet Pepper with Stress Tolerance-Inducing Compounds Alleviates Salinity Stress Oxidative Damage by Mediating the Physio-Biochemical Activities and Antioxidant Systems." Agronomy 10, no. 1: 26.
Leaf rust caused by Puccinia triticina f.sp. tritici is the most important serious diseases attacking wheat plants. The efficacy of bioagents, i.e. Bacillus subtilis, Bacillus chitinospours, Bacillus pumilus, Trichoderma viride and Trichoderma harzianum to control leaf rust was studied. The bioagents were sprayed before and after inoculation with P. triticina by 24 h during 2016/17 and 2017/18 growing seasons. Our results showed that, B. subtilis was the best treatment followed by T. viride, where there were significant increase in incubation and latent periods of the pathogen as well as increase 1000 kernel weight (g) and yield/plot (kg). On contrary, there was significant decrease in number of pustules, pustule length, pustule width, final rust severity (%) and area under disease progress curve (AUDPC). Additionally, the treatments led to increase activity of catalase (CAT) and peroxidase (POX), however, electrolyte leakage was decreased compared to control. Correlation analysis gave evidence to the importance of FRS (%) as the good indicator for the study efficacy of different bioagents on control leaf rust. Application of bioagents as a source for wheat leaf rust disease control are safe on the environment in addition to the pathogen creates strains resistant to fungicides.
Reda I. Omara; Gabr A. El-Kot; Fawzya M. Fadel; Khaled A.A. Abdelaal; Eman M. Saleh. Efficacy of certain bioagents on patho-physiological characters of wheat plants under wheat leaf rust stress. Physiological and Molecular Plant Pathology 2019, 106, 102 -108.
AMA StyleReda I. Omara, Gabr A. El-Kot, Fawzya M. Fadel, Khaled A.A. Abdelaal, Eman M. Saleh. Efficacy of certain bioagents on patho-physiological characters of wheat plants under wheat leaf rust stress. Physiological and Molecular Plant Pathology. 2019; 106 ():102-108.
Chicago/Turabian StyleReda I. Omara; Gabr A. El-Kot; Fawzya M. Fadel; Khaled A.A. Abdelaal; Eman M. Saleh. 2019. "Efficacy of certain bioagents on patho-physiological characters of wheat plants under wheat leaf rust stress." Physiological and Molecular Plant Pathology 106, no. : 102-108.
The resistant, slow and fast-rusting cultivars were selected from 15 wheat cultivars to study biochemical and histological aspects of compatible and incompatible wheat-Puccinia striiformis interactions. Final rust severity (%) and area under disease progress curve were significantly decreased in resistant cultivars compared with susceptible ones. Biochemical analysis revealed that reactive oxygen species (ROS), i.e. superoxide (O2•-) and hydrogen peroxide (H2O2) significantly accumulated in the susceptible cultivars. While, activities of catalase (CAT), peroxidase (POX) and chlorophyll concentrations were increased in resistant cultivars. Histological examination using scanning and transmission electron microscope indicated that approximately all haustoria and hyphae were inhibited in resistant cultivar (Misr-1), development of haustorial mother cells and haustoria were retarded, and they were abnormal. On the other hand, large amounts of intercellular hyphae presented in the intercellular spaces and many haustoria were produced in fast-rusting cultivar (Sids-12). Nevertheless, a little of sours and spores on upper epidermis and in mesophyll tissue were observed in slow-rusting cultivars.
Samar.M. Esmail; Reda.I. Omara; Khaled.A.A. Abdelaal; Yaser.M. Hafez. Histological and biochemical aspects of compatible and incompatible wheat- Puccinia striiformis interactions. Physiological and Molecular Plant Pathology 2018, 106, 120 -128.
AMA StyleSamar.M. Esmail, Reda.I. Omara, Khaled.A.A. Abdelaal, Yaser.M. Hafez. Histological and biochemical aspects of compatible and incompatible wheat- Puccinia striiformis interactions. Physiological and Molecular Plant Pathology. 2018; 106 ():120-128.
Chicago/Turabian StyleSamar.M. Esmail; Reda.I. Omara; Khaled.A.A. Abdelaal; Yaser.M. Hafez. 2018. "Histological and biochemical aspects of compatible and incompatible wheat- Puccinia striiformis interactions." Physiological and Molecular Plant Pathology 106, no. : 120-128.
The response of Egyptian wheat cultivars (Gemmeiza-7, Gemmeiza-10, Gemmeiza-11 and Gemmeiza-12) against leaf rust was studied at adult stage at two locations during two seasons. The results differentiated cultivars to susceptible and resistant depend upon the epidemiological parameters; FRS (%), AUDPC and r-value. The resistant cultivars, (Gemmeiza-10 and Gemmeiza-12) have the resistant genes; Lr10 and Lr19. However, Gemmeiza-7 and Gemmeiza-11 haven't any resistant genes. The discoloration of superoxide and hydrogen peroxide was decreased in moderately resistant and resistant cultivars compared to the susceptible cultivars. Also, electrolyte leakage increased in susceptible cultivars. Catalase and peroxidase activities were increased in resistant cultivars. Our results were confirmed with the anatomical studies which proved that epidermis thickness, mesophyll and phloem tissues were decreased in susceptible cultivars. Therefore, this explains why these cultivars still resistant till now.
Reda I. Omara; Khaled A.A. Abdelaal. Biochemical, histopathological and genetic analysis associated with leaf rust infection in wheat plants (Triticum aestivum L.). Physiological and Molecular Plant Pathology 2018, 104, 48 -57.
AMA StyleReda I. Omara, Khaled A.A. Abdelaal. Biochemical, histopathological and genetic analysis associated with leaf rust infection in wheat plants (Triticum aestivum L.). Physiological and Molecular Plant Pathology. 2018; 104 ():48-57.
Chicago/Turabian StyleReda I. Omara; Khaled A.A. Abdelaal. 2018. "Biochemical, histopathological and genetic analysis associated with leaf rust infection in wheat plants (Triticum aestivum L.)." Physiological and Molecular Plant Pathology 104, no. : 48-57.
Water deficit stress is an abiotic stress that causes reductions in growth and yield of many field crops around the world. The present research was aimed to elucidate the mitigating efficiency of exogenous application of select osmoregulators and biostimulants, i.e., potassium dihydrogen phosphate, actosol® (humic acid), Amino more (amino acids), and Compound fertilizer, applied as a spray that reached both foliage and the soil, on growth characteristics, antioxidant capacity, and productivity of barley (Hordeum vulgare L. Giza123) under water deficit stress during two successive growing seasons of field experiments in Egypt. Water deficit resulted in stress as estimated by stress indicators and decreased growth and poor health and development as reflected in statistically significant decreases in chlorophyll a and b and major nutrient (NPK) levels in tissues, stem length, number of leaves, and fresh and dry mass as well as yield components such as spike length, grains per spike, biological yield, grain yield, and 1000-grain weight. As a response to water deficit stress, reactive oxygen species (ROS, i.e., superoxide and hydrogen peroxide) levels increased significantly resulting in lipid peroxidation and decreased membrane integrity and significant increases in antioxidant enzymes such as catalase (CAT), polyphenol oxidase (PPO), and peroxidase (POX). All four treatments alleviated the detrimental impacts of water deficit stress as evidenced by statistically significantly increased photosynthetic pigment concentration, tissue NPK levels, growth, and yield parameters compared to the water deficit-stressed control, while the stress responses were significantly reduced. The osmoregulators used either partially restored the growth and yield of osmotic-stressed barley plants or certain treatments enhanced them. All osmoregulators tested mitigated the adverse impacts of water deficit stress on barley plants, but the highest induction was found when plants were treated with actosol®. The beneficial effects of the osmoregulators tested were the strongest overall in the order actosol® ˃ potassium dihydrogen phosphate ˃ Amino more ˃ Compound fertilizer.
Khaled Abdelaal; Yaser M. Hafez; Mohamed M. El-Afry; Dalia S. Tantawy; Tarek Alshaal. Effect of some osmoregulators on photosynthesis, lipid peroxidation, antioxidative capacity, and productivity of barley (Hordeum vulgare L.) under water deficit stress. Environmental Science and Pollution Research 2018, 25, 30199 -30211.
AMA StyleKhaled Abdelaal, Yaser M. Hafez, Mohamed M. El-Afry, Dalia S. Tantawy, Tarek Alshaal. Effect of some osmoregulators on photosynthesis, lipid peroxidation, antioxidative capacity, and productivity of barley (Hordeum vulgare L.) under water deficit stress. Environmental Science and Pollution Research. 2018; 25 (30):30199-30211.
Chicago/Turabian StyleKhaled Abdelaal; Yaser M. Hafez; Mohamed M. El-Afry; Dalia S. Tantawy; Tarek Alshaal. 2018. "Effect of some osmoregulators on photosynthesis, lipid peroxidation, antioxidative capacity, and productivity of barley (Hordeum vulgare L.) under water deficit stress." Environmental Science and Pollution Research 25, no. 30: 30199-30211.