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Prof. Guzel Kudoyarova
Ufa Institute of Biology of the Russian Academy of Sciences, Ufa, Russian

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0 cytokinins
0 abscisic acid
0 Plant hormones
0 Stomata
0 aquaporins

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Communication
Published: 24 August 2021 in International Journal of Molecular Sciences
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The role of reactive oxygen species (ROS) in ABA-induced increase in hydraulic conductivity was hypothesized to be dependent on an increase in aquaporin water channel (AQP) abundance. Single ABA application or its combination with ROS manipulators (ROS scavenger ascorbic acid and NADPH oxidase inhibitor diphenyleneiodonium chloride (DPI)) were studied on detached roots of barley plants. We measured the osmotically driven flow rate of xylem sap and calculated root hydraulic conductivity. In parallel, immunolocalization of ABA and HvPIP2;2 AQPs was performed with corresponding specific antibodies. ABA treatment increased the flow rate of xylem, root hydraulic conductivity and immunostaining for ABA and HvPIP2;2, while the addition of antioxidants prevented the effects of this hormone. The obtained results confirmed the involvement of ROS in ABA effect on hydraulic conductivity, in particular, the importance of H2O2 production by ABA-treated plants for the effect of this hormone on AQP abundance.

ACS Style

Guzel Sharipova; Ruslan Ivanov; Dmitriy Veselov; Guzel Akhiyarova; Maria Shishova; Tatyana Nuzhnaya; Guzel Kudoyarova. Involvement of Reactive Oxygen Species in ABA-Induced Increase in Hydraulic Conductivity and Aquaporin Abundance. International Journal of Molecular Sciences 2021, 22, 9144 .

AMA Style

Guzel Sharipova, Ruslan Ivanov, Dmitriy Veselov, Guzel Akhiyarova, Maria Shishova, Tatyana Nuzhnaya, Guzel Kudoyarova. Involvement of Reactive Oxygen Species in ABA-Induced Increase in Hydraulic Conductivity and Aquaporin Abundance. International Journal of Molecular Sciences. 2021; 22 (17):9144.

Chicago/Turabian Style

Guzel Sharipova; Ruslan Ivanov; Dmitriy Veselov; Guzel Akhiyarova; Maria Shishova; Tatyana Nuzhnaya; Guzel Kudoyarova. 2021. "Involvement of Reactive Oxygen Species in ABA-Induced Increase in Hydraulic Conductivity and Aquaporin Abundance." International Journal of Molecular Sciences 22, no. 17: 9144.

Journal article
Published: 23 August 2021 in Plants
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Much attention is paid to the relationship between bacteria and plants in the process of the bioremediation of oil-contaminated soils, but the effect of petroleum degrading bacteria that synthesize phytohormones on the content and distribution of these compounds in plants is poorly studied. The goal of the present field experiment was to study the effects of hydrocarbon-oxidizing bacteria that produce auxins on the growth, biochemical characteristics, and hormonal status of barley plants in the presence of oil, as well as assessing the effect of bacteria and plants separately and in association with the content of oil hydrocarbons in the soil. The treatment of plants with strains of Enterobacter sp. UOM 3 and Pseudomonas hunanensis IB C7 led to an increase in the length and mass of roots and shoots and the leaf surface index, and an improvement in some parameters of the elements of the crop structure, which were suppressed by the pollutant. The most noticeable effect of bacteria on the plant hormonal system was a decrease in the accumulation of abscisic acid. The data obtained indicate that the introduction of microorganisms weakened the negative effects on plants under abiotic stress caused by the presence of oil. Plant-bacteria associations were more effective in reducing the content of hydrocarbons in the soil and increasing its microbiological activity than when either organism was used individually.

ACS Style

Elena Kuzina; Gulnaz Rafikova; Lidiya Vysotskaya; Tatyana Arkhipova; Margarita Bakaeva; Dar’Ya Chetverikova; Guzel Kudoyarova; Tatyana Korshunova; Sergey Chetverikov. Influence of Hydrocarbon-Oxidizing Bacteria on the Growth, Biochemical Characteristics, and Hormonal Status of Barley Plants and the Content of Petroleum Hydrocarbons in the Soil. Plants 2021, 10, 1745 .

AMA Style

Elena Kuzina, Gulnaz Rafikova, Lidiya Vysotskaya, Tatyana Arkhipova, Margarita Bakaeva, Dar’Ya Chetverikova, Guzel Kudoyarova, Tatyana Korshunova, Sergey Chetverikov. Influence of Hydrocarbon-Oxidizing Bacteria on the Growth, Biochemical Characteristics, and Hormonal Status of Barley Plants and the Content of Petroleum Hydrocarbons in the Soil. Plants. 2021; 10 (8):1745.

Chicago/Turabian Style

Elena Kuzina; Gulnaz Rafikova; Lidiya Vysotskaya; Tatyana Arkhipova; Margarita Bakaeva; Dar’Ya Chetverikova; Guzel Kudoyarova; Tatyana Korshunova; Sergey Chetverikov. 2021. "Influence of Hydrocarbon-Oxidizing Bacteria on the Growth, Biochemical Characteristics, and Hormonal Status of Barley Plants and the Content of Petroleum Hydrocarbons in the Soil." Plants 10, no. 8: 1745.

Journal article
Published: 13 May 2021 in Plants
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Plant-bacteria consortia are more effective in bioremediation of petroleum contaminated soil than when either organism is used individually. The reason for this is that plant root exudates promote growth and activity of oil degrading bacteria. However, insufficient attention has been paid to the ability of bacteria to influence root exudation. Therefore, the influence of barley plants and/or bacterial inoculation (Pseudomonas hunanensis IB C7 and Enterobacter sp. UOM 3) on the content of organic acids, sugars and plant hormones in the eluate from clean and oil-polluted sand was studied separately or in combination. These strains are capable of oxidizing hydrocarbons and synthesizing auxins. Concentrations of organic acids and sugars were determined using capillary electrophoresis, and hormones by enzyme-linked immunosorbent assays. In the absence of plants, no sugars were detected in the sand, confirming that root exudates are their main source. Introducing bacteria into the sand increased total contents of organic compounds both in the presence and absence of oil. This increase could be related to the increase in auxin amounts in the sand eluate, as well as in plants. The results indicate that bacteria are able to increase the level of root exudation. Since auxins can promote root exudation, bacterial production of this hormone is likely responsible for increased concentrations of soluble organic compounds in the sand. Bacterial mediation of root exudation by affecting plant hormonal status should be considered when choosing microorganisms for phytoremediation.

ACS Style

Sergey Chetverikov; Lidiya Vysotskaya; Elena Kuzina; Tatiana Arkhipova; Margarita Bakaeva; Gulnaz Rafikova; Tatiana Korshunova; Darya Chetverikova; Gaisar Hkudaygulov; Guzel Kudoyarova. Effects of Association of Barley Plants with Hydrocarbon-Degrading Bacteria on the Content of Soluble Organic Compounds in Clean and Oil-Contaminated Sand. Plants 2021, 10, 975 .

AMA Style

Sergey Chetverikov, Lidiya Vysotskaya, Elena Kuzina, Tatiana Arkhipova, Margarita Bakaeva, Gulnaz Rafikova, Tatiana Korshunova, Darya Chetverikova, Gaisar Hkudaygulov, Guzel Kudoyarova. Effects of Association of Barley Plants with Hydrocarbon-Degrading Bacteria on the Content of Soluble Organic Compounds in Clean and Oil-Contaminated Sand. Plants. 2021; 10 (5):975.

Chicago/Turabian Style

Sergey Chetverikov; Lidiya Vysotskaya; Elena Kuzina; Tatiana Arkhipova; Margarita Bakaeva; Gulnaz Rafikova; Tatiana Korshunova; Darya Chetverikova; Gaisar Hkudaygulov; Guzel Kudoyarova. 2021. "Effects of Association of Barley Plants with Hydrocarbon-Degrading Bacteria on the Content of Soluble Organic Compounds in Clean and Oil-Contaminated Sand." Plants 10, no. 5: 975.

Original article
Published: 27 March 2021 in Acta Physiologiae Plantarum
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Maintenance of active plant growth is important for successful phytoremediation of soil contaminated with petroleum oil products. Strains of oil-degrading bacteria introduced into rhizosphere were found to reduce the extent of plant growth inhibition resulting from petroleum stress. The effect was due to combining the capacity for petroleum degradation with promotion of plant growth by bacterial phytohormones. The purpose of this work was to compare the relative importance of these mechanisms in supporting the growth of barley plants against the background of oil pollution of the soil. Plants were treated with bacterial suspensions of four strains capable of petroleum degradation and production of indole acetic acid (IAA, plant hormone of the auxin class). The strains were shown to differ in their ability to support plant growth under conditions of oil pollution. Introduction of bacteria into soil accelerated petroleum degradation. Nevertheless, oil degradation was not the only mechanism behind promotion of plant growth, since the strain with the lowest ability to degrade oil was characterized by a relatively high growth-stimulating activity. The highest ability to stimulate plant growth was detected in the case of strains, which were the most effective in increasing the concentration of IAA in plants and decreasing the stress-induced accumulation of abscisic acid (ABA).

ACS Style

Lidiya B. Vysotskaya; Guzel R. Kudoyarova; Tatyana N. Arkhipova; Elena V. Kuzina; Gulnaz F. Rafikova; Zarina A. Akhtyamova; Ruslan S. Ivanov; Sergey P. Chetverikov; Darya V. Chetverikova; Margarita D. Bakaeva; Tatyana Yu. Korshunova; Oleg N. Loginov. The influence of the association of barley plants with petroleum degrading bacteria on the hormone content, growth and photosynthesis of barley plants grown in the oil-contaminated soil. Acta Physiologiae Plantarum 2021, 43, 1 -10.

AMA Style

Lidiya B. Vysotskaya, Guzel R. Kudoyarova, Tatyana N. Arkhipova, Elena V. Kuzina, Gulnaz F. Rafikova, Zarina A. Akhtyamova, Ruslan S. Ivanov, Sergey P. Chetverikov, Darya V. Chetverikova, Margarita D. Bakaeva, Tatyana Yu. Korshunova, Oleg N. Loginov. The influence of the association of barley plants with petroleum degrading bacteria on the hormone content, growth and photosynthesis of barley plants grown in the oil-contaminated soil. Acta Physiologiae Plantarum. 2021; 43 (4):1-10.

Chicago/Turabian Style

Lidiya B. Vysotskaya; Guzel R. Kudoyarova; Tatyana N. Arkhipova; Elena V. Kuzina; Gulnaz F. Rafikova; Zarina A. Akhtyamova; Ruslan S. Ivanov; Sergey P. Chetverikov; Darya V. Chetverikova; Margarita D. Bakaeva; Tatyana Yu. Korshunova; Oleg N. Loginov. 2021. "The influence of the association of barley plants with petroleum degrading bacteria on the hormone content, growth and photosynthesis of barley plants grown in the oil-contaminated soil." Acta Physiologiae Plantarum 43, no. 4: 1-10.

Journal article
Published: 08 February 2021 in Cells
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The trans-membrane carrier AtENT3 is known to transport externally supplied cytokinin ribosides and thus promote uptake by cells. However, its role in distributing either exogenous or endogenous cytokinins within the intact plant has not hitherto been reported. To test this, we used ent3-1 mutant Arabidopsis seedlings in which the gene is not expressed due to a T-DNA insertion, and examined the effect on the concentration and distribution of either endogenous cytokinins or exogenous trans-zeatin riboside applied to the roots. In the mutant, accumulation of endogenous cytokinins in the roots was reduced and capacity to deliver externally supplied trans-zeatin riboside to the shoots was increased suggesting involvement of equilibrative nucleoside (ENT) transporter in the control of cytokinin distribution in the plants. Roots of ent3-1 were longer in the mutant in association with their lower cytokinin concentration. We concluded that the ENT3 transporter participates in partitioning endogenous cytokinins between the apoplast and the symplast by facilitating their uptake by root cells thereby limiting cytokinin export to the shoots through the xylem. Dilution of the mineral nutrient solution lowered endogenous cytokinin concentration in the roots of both wild type (WT) and ent3-1 plants accompanied by promotion of root elongation. Nevertheless, cytokinin content was lower, while roots were longer in the ent3-1 mutant than in the WT under either normal or deficient mineral nutrition suggesting a significant role of ENT3 transporter in the control of cytokinin level in the roots and the rate of their elongation.

ACS Style

Alla Korobova; Bulat Kuluev; Torsten Möhlmann; Dmitriy Veselov; Guzel Kudoyarova. Limitation of Cytokinin Export to the Shoots by Nucleoside Transporter ENT3 and its Linkage with Root Elongation in Arabidopsis. Cells 2021, 10, 350 .

AMA Style

Alla Korobova, Bulat Kuluev, Torsten Möhlmann, Dmitriy Veselov, Guzel Kudoyarova. Limitation of Cytokinin Export to the Shoots by Nucleoside Transporter ENT3 and its Linkage with Root Elongation in Arabidopsis. Cells. 2021; 10 (2):350.

Chicago/Turabian Style

Alla Korobova; Bulat Kuluev; Torsten Möhlmann; Dmitriy Veselov; Guzel Kudoyarova. 2021. "Limitation of Cytokinin Export to the Shoots by Nucleoside Transporter ENT3 and its Linkage with Root Elongation in Arabidopsis." Cells 10, no. 2: 350.

Journal article
Published: 07 December 2020 in Plants
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Although changes in root architecture in response to the environment can optimize mineral and water nutrient uptake, mechanisms regulating these changes are not well-understood. We investigated whether P deprivation effects on root development are mediated by abscisic acid (ABA) and its interactions with other hormones. The ABA-deficient barley mutant Az34 and its wild-type (WT) were grown in P-deprived and P-replete conditions, and hormones were measured in whole roots and root tips. Although P deprivation decreased growth in shoot mass similarly in both genotypes, only the WT increased primary root length and number of lateral roots. The effect was accompanied by ABA accumulation in root tips, a response not seen in Az34. Increased ABA in P-deprived WT was accompanied by decreased concentrations of cytokinin, an inhibitor of root extension. Furthermore, P-deficiency in the WT increased auxin concentration in whole root systems in association with increased root branching. In the ABA-deficient mutant, P-starvation failed to stimulate root elongation or promote branching, and there was no decline in cytokinin and no increase in auxin. The results demonstrate ABA’s ability to mediate in root growth responses to P starvation in barley, an effect linked to its effects on cytokinin and auxin concentrations.

ACS Style

Lidiya Vysotskaya; Guzel Akhiyarova; Arina Feoktistova; Zarina Akhtyamova; Alla Korobova; Igor Ivanov; Ian Dodd; Bulat Kuluev; Guzel Kudoyarova. Effects of Phosphate Shortage on Root Growth and Hormone Content of Barley Depend on Capacity of the Roots to Accumulate ABA. Plants 2020, 9, 1722 .

AMA Style

Lidiya Vysotskaya, Guzel Akhiyarova, Arina Feoktistova, Zarina Akhtyamova, Alla Korobova, Igor Ivanov, Ian Dodd, Bulat Kuluev, Guzel Kudoyarova. Effects of Phosphate Shortage on Root Growth and Hormone Content of Barley Depend on Capacity of the Roots to Accumulate ABA. Plants. 2020; 9 (12):1722.

Chicago/Turabian Style

Lidiya Vysotskaya; Guzel Akhiyarova; Arina Feoktistova; Zarina Akhtyamova; Alla Korobova; Igor Ivanov; Ian Dodd; Bulat Kuluev; Guzel Kudoyarova. 2020. "Effects of Phosphate Shortage on Root Growth and Hormone Content of Barley Depend on Capacity of the Roots to Accumulate ABA." Plants 9, no. 12: 1722.

Journal article
Published: 24 October 2020 in Plants
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Although salinity inhibits plant growth, application of appropriate rhizosphere bacteria can diminish this negative effect. We studied one possible mechanism that may underlie this beneficial response. Wheat plants were inoculated with Bacillus subtilis IB-22 and Pseudomonas mandelii IB-Ki14 and their consequences for growth, water relations, and concentrations of the hormone abscisic acid (ABA) were followed in the presence of soil salinity. Salinity alone increased ABA concentration in wheat leaves and roots and this was associated with decreased stomatal conductance, but also with chlorophyll loss. Bacterial treatment raised ABA concentrations in roots, suppressed accumulation of leaf ABA, decreased chlorophyll loss, and promoted leaf area and transpiration. However, water balance was maintained due to increased water uptake by inoculated plants, brought about in part by a larger root system. The effect may be the outcome of ABA action since the hormone is known to maintain root extension in stressed plants. Root ABA concentration was highest in salt-stressed plants inoculated with B. subtilis and this contributed to greater root hydraulic conductivity. We conclude that bacteria can raise salt resistance in wheat by increasing root ABA, resulting in larger root systems that can also possess enhanced hydraulic conductivity thereby supporting better-hydrated leaves.

ACS Style

Tatiana Arkhipova; Elena Martynenko; Guzel Sharipova; Ludmila Kuzmina; Igor Ivanov; Margarita Garipova; Guzel Kudoyarova. Effects of Plant Growth Promoting Rhizobacteria on the Content of Abscisic Acid and Salt Resistance of Wheat Plants. Plants 2020, 9, 1429 .

AMA Style

Tatiana Arkhipova, Elena Martynenko, Guzel Sharipova, Ludmila Kuzmina, Igor Ivanov, Margarita Garipova, Guzel Kudoyarova. Effects of Plant Growth Promoting Rhizobacteria on the Content of Abscisic Acid and Salt Resistance of Wheat Plants. Plants. 2020; 9 (11):1429.

Chicago/Turabian Style

Tatiana Arkhipova; Elena Martynenko; Guzel Sharipova; Ludmila Kuzmina; Igor Ivanov; Margarita Garipova; Guzel Kudoyarova. 2020. "Effects of Plant Growth Promoting Rhizobacteria on the Content of Abscisic Acid and Salt Resistance of Wheat Plants." Plants 9, no. 11: 1429.

Journal article
Published: 24 August 2020 in Biomolecules
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Water deficits inhibit plant growth and decrease crop productivity. Remedies are needed to counter this increasingly urgent problem in practical farming. One possible approach is to utilize rhizobacteria known to increase plant resistance to abiotic and other stresses. We therefore studied the effects of inoculating the culture medium of potato microplants grown in vitro with Azospirillum brasilense Sp245 or Ochrobactrum cytisi IPA7.2. Growth and hormone content of the plants were evaluated under stress-free conditions and under a water deficit imposed with polyethylene glycol (PEG 6000). Inoculation with either bacterium promoted the growth in terms of leaf mass accumulation. The effects were associated with increased concentrations of auxin and cytokinin hormones in the leaves and stems and with suppression of an increase in the leaf abscisic acid that PEG treatment otherwise promoted in the potato microplants. O. cytisi IPA7.2 had a greater growth-stimulating effect than A. brasilense Sp245 on stressed plants, while A. brasilense Sp245 was more effective in unstressed plants. The effects were likely to be the result of changes to the plant’s hormonal balance brought about by the bacteria.

ACS Style

Tatiana N. Arkhipova; Nina V. Evseeva; Oksana V. Tkachenko; Gennady L. Burygin; Lidiya B. Vysotskaya; Zarina A. Akhtyamova; Guzel R. Kudoyarova. Rhizobacteria Inoculation Effects on Phytohormone Status of Potato Microclones Cultivated In Vitro under Osmotic Stress. Biomolecules 2020, 10, 1231 .

AMA Style

Tatiana N. Arkhipova, Nina V. Evseeva, Oksana V. Tkachenko, Gennady L. Burygin, Lidiya B. Vysotskaya, Zarina A. Akhtyamova, Guzel R. Kudoyarova. Rhizobacteria Inoculation Effects on Phytohormone Status of Potato Microclones Cultivated In Vitro under Osmotic Stress. Biomolecules. 2020; 10 (9):1231.

Chicago/Turabian Style

Tatiana N. Arkhipova; Nina V. Evseeva; Oksana V. Tkachenko; Gennady L. Burygin; Lidiya B. Vysotskaya; Zarina A. Akhtyamova; Guzel R. Kudoyarova. 2020. "Rhizobacteria Inoculation Effects on Phytohormone Status of Potato Microclones Cultivated In Vitro under Osmotic Stress." Biomolecules 10, no. 9: 1231.

Journal article
Published: 19 March 2020 in Plants
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The phytoremediation of soil contaminated with petroleum oil products relies on co-operation between plants and rhizosphere bacteria, including the plant growth-promoting effect of the bacteria. We studied the capacity of strains of Pseudomonas, selected as oil degraders, to produce plant hormones and promote plant growth. Strains with intermediate auxin production were the most effective in stimulating the seedling growth of seven plant species under normal conditions. Bacterial seed treatment resulted in about a 1.6-fold increase in the weight of barley seedlings, with the increment being much lower in other plant species. The strains P. plecoglossicida 2.4-D and P. hunanensis IB C7, characterized by highly efficient oil degradation (about 70%) and stable intermediate in vitro auxin production in the presence of oil, were selected for further study with barley. These strains increased the seed germination percentage approximately two-fold under 5% oil concentration in the soil, while a positive effect on further seedling growth was significant when the oil concentration was raised to 8%. This resulted in a 1.3–1.7-fold increase in the seedling mass after 7 days of growth, depending on the bacterial strain. Thus, strains of oil-degrading bacteria selected for their intermediate and stable production of auxin were found to be effective ameliorators of plant growth inhibition resulting from petroleum stress.

ACS Style

Margarita Bakaeva; Elena Kuzina; Lidiya Vysotskaya; Guzel Kudoyarova; Tat’Yana Arkhipova; Gulnaz Rafikova; Sergey Chetverikov; Tat’Yana Korshunova; Dar'ya Chetverikova; Oleg Loginov. Capacity of Pseudomonas Strains to Degrade Hydrocarbons, Produce Auxins and Maintain Plant Growth under Normal Conditions and in the Presence of Petroleum Contaminants. Plants 2020, 9, 379 .

AMA Style

Margarita Bakaeva, Elena Kuzina, Lidiya Vysotskaya, Guzel Kudoyarova, Tat’Yana Arkhipova, Gulnaz Rafikova, Sergey Chetverikov, Tat’Yana Korshunova, Dar'ya Chetverikova, Oleg Loginov. Capacity of Pseudomonas Strains to Degrade Hydrocarbons, Produce Auxins and Maintain Plant Growth under Normal Conditions and in the Presence of Petroleum Contaminants. Plants. 2020; 9 (3):379.

Chicago/Turabian Style

Margarita Bakaeva; Elena Kuzina; Lidiya Vysotskaya; Guzel Kudoyarova; Tat’Yana Arkhipova; Gulnaz Rafikova; Sergey Chetverikov; Tat’Yana Korshunova; Dar'ya Chetverikova; Oleg Loginov. 2020. "Capacity of Pseudomonas Strains to Degrade Hydrocarbons, Produce Auxins and Maintain Plant Growth under Normal Conditions and in the Presence of Petroleum Contaminants." Plants 9, no. 3: 379.

Journal article
Published: 20 December 2019 in Biomolecules
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Lipid transfer proteins (LTPs) are a class of small, cationic proteins that bind and transfer lipids and play an important role in plant defense. However, their precise biological role in plants under adverse conditions including salinity and possible regulation by stress hormone abscisic acid (ABA) remains unknown. In this work, we studied the localization of LTPs and ABA in the roots of pea plants using specific antibodies. Presence of LTPs was detected on the periphery of the cells mainly located in the phloem. Mild salt stress (50 mM NaCI) led to slowing plant growth and higher immunostaining for LTPs in the phloem. The deposition of suberin in Casparian bands located in the endoderma revealed with Sudan III was shown to be more intensive under salt stress and coincided with the increased LTP staining. All obtained data suggest possible functions of LTPs in pea roots. We assume that these proteins can participate in stress-induced pea root suberization or in transport of phloem lipid molecules. Salt stress increased ABA immunostaining in pea root cells but its localization was different from that of the LTPs. Thus, we failed to confirm the hypothesis regarding the direct influence of ABA on the level of LTPs in the salt-stressed root cells.

ACS Style

Guzel R. Akhiyarova; Ekaterina I. Finkina; Tatiana V. Ovchinnikova; Dmitry S. Veselov; Guzel R. Kudoyarova. Role of Pea LTPs and Abscisic Acid in Salt-Stressed Roots. Biomolecules 2019, 10, 15 .

AMA Style

Guzel R. Akhiyarova, Ekaterina I. Finkina, Tatiana V. Ovchinnikova, Dmitry S. Veselov, Guzel R. Kudoyarova. Role of Pea LTPs and Abscisic Acid in Salt-Stressed Roots. Biomolecules. 2019; 10 (1):15.

Chicago/Turabian Style

Guzel R. Akhiyarova; Ekaterina I. Finkina; Tatiana V. Ovchinnikova; Dmitry S. Veselov; Guzel R. Kudoyarova. 2019. "Role of Pea LTPs and Abscisic Acid in Salt-Stressed Roots." Biomolecules 10, no. 1: 15.

Journal article
Published: 11 December 2019 in Seed Science Research
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Dynamics of abscisic acid (ABA) and indole-3-acetic acid (IAA) contents were followed in developing barley caryopses of the ABA-deficient mutant AZ34 and its parental cultivar Steptoe. Distribution of these hormones and HvPIP2 aquaporins (AQPs) was studied with the help of immunohistochemical methods in the roots and coleorhiza of developing embryos. In Steptoe, maturation of the caryopsis was accompanied by vast accumulation of ABA, while this hormone accumulated more slowly in the caryopsis of AZ34 and its content was lower than in Steptoe. Accumulation of ABA was accompanied by a decline in IAA level in the developing caryopsis, the process being delayed in AZ34 in accordance with the slower accumulation of ABA. ABA accumulated to high levels in the coleorhiza cells of Steptoe, while the effect was absent in AZ34. The high level of ABA was likely to be important for maintaining the barrier function of the coleorhiza, preventing germination of seminal roots and enabling seed dormancy, while the absence of ABA accumulation in coleorhiza of AZ34 may be responsible for the initiation of root germination inside the caryopsis. The abundance of HvPIP2 AQPs in the seminal roots was higher at the beginning of maturation of Steptoe caryopsis and declined afterwards, while the levels of APQs increased later in AZ34 in accordance with the delay in ABA accumulation. These results suggest the importance of ABA accumulation in coleorhiza for preventing precocious growth of seminal roots, and suggest regulation of IAA and aquaporin levels by this hormone during maturation of embryos.

ACS Style

Oksana A. Seldimirova; Guzel R. Kudoyarova; Maki Katsuhara; Ilshat R. Galin; Denis Yu. Zaitsev; Natalia N. Kruglova; Dmitry S. Veselov; Stanislav Yu. Veselov. Dynamics of the contents and distribution of ABA, auxins and aquaporins in developing caryopses of an ABA-deficient barley mutant and its parental cultivar. Seed Science Research 2019, 29, 261 -269.

AMA Style

Oksana A. Seldimirova, Guzel R. Kudoyarova, Maki Katsuhara, Ilshat R. Galin, Denis Yu. Zaitsev, Natalia N. Kruglova, Dmitry S. Veselov, Stanislav Yu. Veselov. Dynamics of the contents and distribution of ABA, auxins and aquaporins in developing caryopses of an ABA-deficient barley mutant and its parental cultivar. Seed Science Research. 2019; 29 (4):261-269.

Chicago/Turabian Style

Oksana A. Seldimirova; Guzel R. Kudoyarova; Maki Katsuhara; Ilshat R. Galin; Denis Yu. Zaitsev; Natalia N. Kruglova; Dmitry S. Veselov; Stanislav Yu. Veselov. 2019. "Dynamics of the contents and distribution of ABA, auxins and aquaporins in developing caryopses of an ABA-deficient barley mutant and its parental cultivar." Seed Science Research 29, no. 4: 261-269.

Review article
Published: 29 October 2019 in Frontiers in Plant Science
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The capacity of rhizoshere bacteria to influence plant hormonal status, by bacterial production or metabolism of hormones, is considered an important mechanism by which they promote plant growth, and productivity. Nevertheless, inoculating these bacteria into the plant rhizosphere may produce beneficial or detrimental results depending on bacterial effects on hormone composition and quantity in planta, and the environmental conditions under which the plants are growing. This review considers some effects of bacterial hormone production or metabolism on root growth and development and shoot physiological processes. We analyze how these changes in root and shoot growth and function help plants adapt to their growth conditions, especially as these change from optimal to stressful. Consistent effects are addressed, along with plant responses to specific environmental stresses: drought, salinity, and soil contamination (with petroleum in particular).

ACS Style

Guzel Kudoyarova; Tatiana Arkhipova; Tatiana Korshunova; Margarita Bakaeva; Oleg Loginov; Ian Charles Dodd. Phytohormone Mediation of Interactions Between Plants and Non-Symbiotic Growth Promoting Bacteria Under Edaphic Stresses. Frontiers in Plant Science 2019, 10, 1368 .

AMA Style

Guzel Kudoyarova, Tatiana Arkhipova, Tatiana Korshunova, Margarita Bakaeva, Oleg Loginov, Ian Charles Dodd. Phytohormone Mediation of Interactions Between Plants and Non-Symbiotic Growth Promoting Bacteria Under Edaphic Stresses. Frontiers in Plant Science. 2019; 10 ():1368.

Chicago/Turabian Style

Guzel Kudoyarova; Tatiana Arkhipova; Tatiana Korshunova; Margarita Bakaeva; Oleg Loginov; Ian Charles Dodd. 2019. "Phytohormone Mediation of Interactions Between Plants and Non-Symbiotic Growth Promoting Bacteria Under Edaphic Stresses." Frontiers in Plant Science 10, no. : 1368.

Journal article
Published: 01 January 2018 in Journal of Plant Physiology
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Inhibition of lettuce plant growth under increased planting density was accompanied by accumulation of abscisic acid (ABA) in the shoots of competing plants. To check causal relationship between these responses we studied the effect of decreased synthesis of ABA on growth indexes and hormonal balance of lettuce plants under elevated density of their planting (one (single) or three (competing) plants per pot). Herbicide fluridone was used to inhibit ABA synthesis. Preliminary experiments with single plants showed that presence of fluridone in the soil solution at rather low concentration (0.001mg/L) did not affect either chlorophyll content or growth rate of shoots and roots during at least one week. Treatment of competing (grouped) plants with this concentration of fluridone prevented both accumulation of ABA and competition induced growth inhibition. These results confirm important role of this hormone in the growth inhibiting effect of increased planting density. Furthermore, as in the case of ABA, fluridone prevented allocation of indoleacetic acid (IAA) to the shoots of competing plants likely contributing to leveling off the increase in the ratio of leaf area to their mass that is characteristic effect of shading in the dense plant populations. The results suggest involvement of ABA in allocation of IAA in competing plants. Application of fluridone did not influence the concentration of cytokinins in the shoots, whose level was decreased by competition either in fluridone treated or control (untreated with fluridone) plants. Accumulation of ABA in the shoots of competing plants accompanied by inhibition of their growth and the absence of either accumulation of ABA or inhibition of their growth in fluridone treated grouped plants confirms importance of ABA synthesis for growth response to competition.

ACS Style

Lidiya B. Vysotskaya; Tatyana N. Arkhipova; Guzel R. Kudoyarova; Stanislav Yu. Veselov. Dependence of growth inhibiting action of increased planting density on capacity of lettuce plants to synthesize ABA. Journal of Plant Physiology 2018, 220, 69 -73.

AMA Style

Lidiya B. Vysotskaya, Tatyana N. Arkhipova, Guzel R. Kudoyarova, Stanislav Yu. Veselov. Dependence of growth inhibiting action of increased planting density on capacity of lettuce plants to synthesize ABA. Journal of Plant Physiology. 2018; 220 ():69-73.

Chicago/Turabian Style

Lidiya B. Vysotskaya; Tatyana N. Arkhipova; Guzel R. Kudoyarova; Stanislav Yu. Veselov. 2018. "Dependence of growth inhibiting action of increased planting density on capacity of lettuce plants to synthesize ABA." Journal of Plant Physiology 220, no. : 69-73.

Original article
Published: 20 October 2017 in Acta Physiologiae Plantarum
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Microorganisms capable of mobilizing phosphate promote plant growth, this activity being frequently accompanied by production of plant hormones auxins. However, the extent of contribution of these characteristics to promotion of plant growth remains unclear. Paenibacillus illinoisensis IB 1087 and Pseudomonas extremaustralis IB-Ki-13-1A strains were selected for their capacity to mobilize phosphates and to synthesize auxins in vitro. The effects of inoculating these bacteria on the content of mobile phosphorus in the soil as well as on the phosphorus and hormone content in wheat plants were studied and the observed responses were related to the changes in plant growth. Inoculation of bacteria into the soil increased P concentration in the plants suggesting their increased capacity for the efficient acquisition of phosphorus compounds, while concentration of mobile phosphorus in the soil was increased by its inoculation with bacteria only in the absence of plants. The treatment increased plants mass (to greater extent in the case of P. illinoisensis) in accordance with the increased level of auxins in the treated plant. Increased mass accumulation did not correlate with the potential ability of bacteria strains for production of auxins or phosphate mobilization in vitro. Our data indicate importance of increased auxin content in the plants for the stimulation of root growth and capacity for P uptake as influenced by growth-promoting bacteria.

ACS Style

Guzel R. Kudoyarova; Lidiya B. Vysotskaya; Tatiana N. Arkhipova; Ludmila Yu. Kuzmina; Nailya F. Galimsyanova; Ludmila V. Sidorova; Ilusa M. Gabbasova; Alexander I. Melentiev; Stanislav Yu. Veselov. Effect of auxin producing and phosphate solubilizing bacteria on mobility of soil phosphorus, growth rate, and P acquisition by wheat plants. Acta Physiologiae Plantarum 2017, 39, 253 .

AMA Style

Guzel R. Kudoyarova, Lidiya B. Vysotskaya, Tatiana N. Arkhipova, Ludmila Yu. Kuzmina, Nailya F. Galimsyanova, Ludmila V. Sidorova, Ilusa M. Gabbasova, Alexander I. Melentiev, Stanislav Yu. Veselov. Effect of auxin producing and phosphate solubilizing bacteria on mobility of soil phosphorus, growth rate, and P acquisition by wheat plants. Acta Physiologiae Plantarum. 2017; 39 (11):253.

Chicago/Turabian Style

Guzel R. Kudoyarova; Lidiya B. Vysotskaya; Tatiana N. Arkhipova; Ludmila Yu. Kuzmina; Nailya F. Galimsyanova; Ludmila V. Sidorova; Ilusa M. Gabbasova; Alexander I. Melentiev; Stanislav Yu. Veselov. 2017. "Effect of auxin producing and phosphate solubilizing bacteria on mobility of soil phosphorus, growth rate, and P acquisition by wheat plants." Acta Physiologiae Plantarum 39, no. 11: 253.

Journal article
Published: 07 January 2017 in Journal of Plant Growth Regulation
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We elucidated the effect of increased planting density (single and grouped competing plants) on concentrations of auxin, abscisic acid, and cytokinins in normal lettuce plants and in those with ethylene perception inhibited by 1-methylcyclopropene (1-MCP). An attempt was made to relate the changes in hormone concentration induced by competition and inhibition of ethylene sensitivity to growth responses of lettuce planting. The results showed changes in concentrations of auxins, cytokinins, and ABA in the response of lettuce to crowding. Accumulation of ABA in shoots was likely to contribute to inhibition of transpiration of the plants grown in the presence of neighbors. This assumption was supported by the results of application of an inhibitor of ABA synthesis (fluridone and carotenoid biosynthesis herbicide) resulting in increased transpiration of grouped, but not single plants. Increased planting density led to the decline in root auxins paralleled by inhibition of root growth. This effect was likely to be due to decreased auxin transport to the roots from the shoots suggested by accumulation of auxins in the shoots and inhibition of root growth by application of the auxin transport inhibitor [-(1-naphtyl)phtalamic acid (NPA)]. Importance of the changes in hormone concentrations was confirmed by data showing that disturbance of auxin and cytokinin distribution detected in MCP-treated plants was accompanied by corresponding modification of the growth response.

ACS Style

Lidiya B. Vysotskaya; Stanislav Yu. Veselov; Guzel R. Kudoyarova. Effect of Competition and Treatment with Inhibitor of Ethylene Perception on Growth and Hormone Content of Lettuce Plants. Journal of Plant Growth Regulation 2017, 36, 450 -459.

AMA Style

Lidiya B. Vysotskaya, Stanislav Yu. Veselov, Guzel R. Kudoyarova. Effect of Competition and Treatment with Inhibitor of Ethylene Perception on Growth and Hormone Content of Lettuce Plants. Journal of Plant Growth Regulation. 2017; 36 (2):450-459.

Chicago/Turabian Style

Lidiya B. Vysotskaya; Stanislav Yu. Veselov; Guzel R. Kudoyarova. 2017. "Effect of Competition and Treatment with Inhibitor of Ethylene Perception on Growth and Hormone Content of Lettuce Plants." Journal of Plant Growth Regulation 36, no. 2: 450-459.

Journal article
Published: 11 August 2016 in Russian Journal of Plant Physiology
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ACS Style

A. V. Korobova; L. B. Vysotskaya; A. N. Vasinskaya; Bulat Kuluev; S. Yu. Veselov; G. R. Kudoyarova. Dependence of root biomass accumulation on the content and metabolism of cytokinins in ethylene-insensitive plants. Russian Journal of Plant Physiology 2016, 63, 597 -603.

AMA Style

A. V. Korobova, L. B. Vysotskaya, A. N. Vasinskaya, Bulat Kuluev, S. Yu. Veselov, G. R. Kudoyarova. Dependence of root biomass accumulation on the content and metabolism of cytokinins in ethylene-insensitive plants. Russian Journal of Plant Physiology. 2016; 63 (5):597-603.

Chicago/Turabian Style

A. V. Korobova; L. B. Vysotskaya; A. N. Vasinskaya; Bulat Kuluev; S. Yu. Veselov; G. R. Kudoyarova. 2016. "Dependence of root biomass accumulation on the content and metabolism of cytokinins in ethylene-insensitive plants." Russian Journal of Plant Physiology 63, no. 5: 597-603.

Journal article
Published: 08 April 2016 in Acta Physiologiae Plantarum
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To address the question of the role of phytohormones in the growth responses induced by P availability, we compared the effects of low P on the growth of barley plants, and the contents of auxin, cytokinins and abscisic acid (ABA). Comparative study of the changes in growth and hormones’ levels in response to P-starvation showed that relative activation of root growth may be related to the decline in shoot cytokinin content and ABA accumulation in the roots of P-starved (P − ) barley plants. The decline in shoot cytokinins is likely to result from the inhibition of the transport of these hormones from roots, and in turn, may contribute to increased distribution of auxins in favor of roots. Reduced root branching detected in our experiments, despite maintenance of root auxins, may be related to an elevated level of either cytokinins or ABA in roots of P − barley plants. Thus, interactions between auxins, cytokinins and ABA are likely to be responsible for the changes in root architecture in P − plants.

ACS Style

Lidiya B. Vysotskaya; Arina W. Trekozova; Guzel R. Kudoyarova. Effect of phosphorus starvation on hormone content and growth of barley plants. Acta Physiologiae Plantarum 2016, 38, 1 -6.

AMA Style

Lidiya B. Vysotskaya, Arina W. Trekozova, Guzel R. Kudoyarova. Effect of phosphorus starvation on hormone content and growth of barley plants. Acta Physiologiae Plantarum. 2016; 38 (5):1-6.

Chicago/Turabian Style

Lidiya B. Vysotskaya; Arina W. Trekozova; Guzel R. Kudoyarova. 2016. "Effect of phosphorus starvation on hormone content and growth of barley plants." Acta Physiologiae Plantarum 38, no. 5: 1-6.

Book chapter
Published: 06 November 2015 in Sustainable Development and Biodiversity
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This review addresses the ability of some soil bacteria to promote plant growth due to production of substances of phytohormonal nature. We discuss possible mechanisms of the action of individual hormones (auxins, cytokinins, abscisic acid, gibberellins, jasmonic acid and salicylic acid) produced either by plants or bacteria on plant growth and development, their supply with mineral nutrients and water and defense responses against phytopathogens.

ACS Style

G. R. Kudoyarova; T. N. Arkhipova; A. I. Melent’Ev. Role of Bacterial Phytohormones in Plant Growth Regulation and Their Development. Sustainable Development and Biodiversity 2015, 69 -86.

AMA Style

G. R. Kudoyarova, T. N. Arkhipova, A. I. Melent’Ev. Role of Bacterial Phytohormones in Plant Growth Regulation and Their Development. Sustainable Development and Biodiversity. 2015; ():69-86.

Chicago/Turabian Style

G. R. Kudoyarova; T. N. Arkhipova; A. I. Melent’Ev. 2015. "Role of Bacterial Phytohormones in Plant Growth Regulation and Their Development." Sustainable Development and Biodiversity , no. : 69-86.

Review
Published: 19 February 2015 in Journal of Experimental Botany
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Changes in resource (mineral nutrients and water) availability, due to their heterogeneous distribution in space and time, affect plant development. Plants need to sense these changes to optimize growth and biomass allocation by integrating root and shoot growth. Since a limited supply of water or nutrients can elicit similar physiological responses (the relative activation of root growth at the expense of shoot growth), similar underlying mechanisms may affect perception and acquisition of either nutrients or water. This review compares root and shoot responses to availability of different macronutrients and water. Attention is given to the roles of root-to-shoot signalling and shoot-to-root signalling, with regard to coordinating changes in root and shoot growth and development. Involvement of plant hormones in regulating physiological responses such as stomatal and hydraulic conductance is revealed by measuring the effects of resource availability on phytohormone concentrations in roots and shoots, and their flow between roots and shoots in xylem and phloem saps. More specific evidence can be obtained by measuring the physiological responses of genotypes with altered hormone responses or concentrations. We discuss the similarity and diversity of changes in shoot growth, allocation to root growth, and root architecture under changes in water, nitrate, and phosphorus availability, and the possible involvement of abscisic acid, indole-acetic acid, and cytokinin in their regulation. A better understanding of these mechanisms may contribute to better crop management for efficient use of these resources and to selecting crops for improved performance under suboptimal soil conditions.

ACS Style

Guzel R. Kudoyarova; Ian Charles Dodd; Dmitry S. Veselov; Shane Andrew Rothwell; Stanislav Yu. Veselov. Common and specific responses to availability of mineral nutrients and water. Journal of Experimental Botany 2015, 66, 2133 -2144.

AMA Style

Guzel R. Kudoyarova, Ian Charles Dodd, Dmitry S. Veselov, Shane Andrew Rothwell, Stanislav Yu. Veselov. Common and specific responses to availability of mineral nutrients and water. Journal of Experimental Botany. 2015; 66 (8):2133-2144.

Chicago/Turabian Style

Guzel R. Kudoyarova; Ian Charles Dodd; Dmitry S. Veselov; Shane Andrew Rothwell; Stanislav Yu. Veselov. 2015. "Common and specific responses to availability of mineral nutrients and water." Journal of Experimental Botany 66, no. 8: 2133-2144.

Journal article
Published: 01 October 2014 in Plant Physiology and Biochemistry
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Phytohormone production is one mechanism by which rhizobacteria can stimulate plant growth, but it is not clear whether the bacteria gain from this mechanism. The hypothesis that microbial-derived cytokinin phytohormones stimulate root exudation of amino acids was tested. The rhizosphere of wheat plants was drenched with the synthetic cytokinin trans-zeatin or inoculated with Bacillus subtilis IB-22 (which produces zeatin type cytokinins) or B. subtilis IB-21 (which failed to accumulate cytokinins). Growing plants in a split root system allowed spatial separation of zeatin application or rhizobacterial inoculation to one compartment and analyses of amino acid release from roots (rhizodeposition) into the other compartment (without either microbial inoculation or treatment with exogenous hormone). Supplying B. sub tills IB-22 or zeatin to either the whole root system or half of the roots increased concentrations of amino acids in the soil solution although the magnitude of the increase was greater when whole roots were treated. There was some similarity in amino acid concentrations induced by either bacterial or zeatin treatment. Thus B. subtilis IB-22 increased amino acid rhizodeposition, likely due to its ability to produce cytokinins. Furthermore, B. subtilis strain IB-21, which failed to accumulate cytokinins in culture media, did not significantly affect amino acid concentrations in the wheat rhizosphere. The ability of rhizobacteria to produce cytokinins and thereby stimulate rhizodeposition may be important in enhancing rhizobacterial colonization of the rhizoplane. (C) 2014 Elsevier Masson SAS. All rights reserved

ACS Style

Guzel R. Kudoyarova; Alexander I. Melentiev; Elena V. Martynenko; Leila N. Timergalina; Tatiana N. Arkhipova; Galina V. Shendel; Ludmila Yu Kuz'Mina; Ian Charles Dodd; Stanislav Yu Veselov. Cytokinin producing bacteria stimulate amino acid deposition by wheat roots. Plant Physiology and Biochemistry 2014, 83, 285 -291.

AMA Style

Guzel R. Kudoyarova, Alexander I. Melentiev, Elena V. Martynenko, Leila N. Timergalina, Tatiana N. Arkhipova, Galina V. Shendel, Ludmila Yu Kuz'Mina, Ian Charles Dodd, Stanislav Yu Veselov. Cytokinin producing bacteria stimulate amino acid deposition by wheat roots. Plant Physiology and Biochemistry. 2014; 83 ():285-291.

Chicago/Turabian Style

Guzel R. Kudoyarova; Alexander I. Melentiev; Elena V. Martynenko; Leila N. Timergalina; Tatiana N. Arkhipova; Galina V. Shendel; Ludmila Yu Kuz'Mina; Ian Charles Dodd; Stanislav Yu Veselov. 2014. "Cytokinin producing bacteria stimulate amino acid deposition by wheat roots." Plant Physiology and Biochemistry 83, no. : 285-291.