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Dr. Anastasia Giannakoula
Assistant Professor University of INTERNATIONAL HELLENIC UNIVERSITY, Faculty of Agriculture

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Research Keywords & Expertise

0 antioxidant activity
0 Plant physiology
0 Nutrient absorption
0 oxidative stress
0 Abiotic and biotic stress

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Short Biography

Giannakoula Anastasia-Assistant Professor- Department of Agriculture in International Hellenic University B.S. degree in Agriculture specialized in Plant Production Aristotle University of Thessaloniki, GREECE Ph.D. in Biology - Aristotle University of Thessaloniki, GREECE Post Doc in Agriculture Aristotle University of Thessaloniki, GREECE Languages: English, French Research Interests: Effects of abiotic stress on plant ultrastructure and metabolism with emphasis in photosynthesis. Study of plants and under abiotic stress conditions.Environmental stress and reactive oxygen species (ROS). Abiotic stress and molecular mechanisms of photosynthesis. Teaching responsibilities Teaching in Undergraduate courses of Agriculture Department -Plant Anatomy and Morphology, -Systematic Botany, Plant Physiology, Plant Biology, Landscape and Architecture Citrus and Tropical Plants, Post Harvest Physiology of Fruits, Pomology Teaching Post graduate courses Advanced Plant Physiology Research guidance: more than 100 undergraduate theses AND 10 postgraduate theses Research programs -Scientific director of one (1) research program -Participation at five (5) research programs PUBLICATIONS-JOURNALS & PERIODICALS -40 published papers -google scholar (>1500 references)

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Journal article
Published: 04 February 2021 in Plants
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Barley (Hordeum vulgare L.) exhibits great adaptability to salt tolerance in marginal environments because of its great genetic diversity. Differences in main biochemical, physiological, and molecular processes, which could explain the different tolerance to soil salinity of 16 barley varieties, were examined during a two-year field experiment. The study was conducted in a saline soil with an electrical conductivity ranging from 7.3 to 11.5 dS/m. During the experiment, a number of different physiological and biochemical characteristics were evaluated when barley was at the two- to three-nodes growing stage (BBCH code 32–33). The results indicated that there were significant (p < 0.001) effects due to varieties for tolerance to salinity. Carbon isotopes discrimination was higher by 11.8% to 16.0% in salt tolerant varieties than that in the sensitive ones. Additionally, in the tolerant varieties, assimilation rates of CO2 and proline concentration were 200% and up to 67% higher than the sensitive varieties, respectively. However, in sensitive varieties, hydrogen peroxide and lipid peroxidation were enhanced, indicating an increased lipid peroxidation. The expression of the genes Hsdr4, HvA1, and HvTX1 did not differ among barley varieties tested. This study suggests that the increased carbon isotopes discrimination, increased proline concentration (play an osmolyte source role), and decreased lipid peroxidation are traits that are associated with barley tolerance to soil salinity. Moreover, our findings that proline improves salt tolerance by up-regulating stress-protective enzymes and reducing oxidation of lipid membranes will encourage our hypothesis that there are specific mechanisms that can be co-related with the salt sensitivity or the tolerance of barley. Therefore, further research is needed to ensure the tolerance mechanisms that exclude NaCl in salt tolerant barley varieties and diminish accumulation of lipid peroxides through adaptive plant responses.

ACS Style

Ioannis Vasilakoglou; Kico Dhima; Anastasia Giannakoula; Christos Dordas; Vasiliki Skiada; Kalliope Papadopoulou. Carbon Assimilation, Isotope Discrimination, Proline and Lipid Peroxidation Contribution to Barley (Hordeum vulgare) Salinity Tolerance. Plants 2021, 10, 299 .

AMA Style

Ioannis Vasilakoglou, Kico Dhima, Anastasia Giannakoula, Christos Dordas, Vasiliki Skiada, Kalliope Papadopoulou. Carbon Assimilation, Isotope Discrimination, Proline and Lipid Peroxidation Contribution to Barley (Hordeum vulgare) Salinity Tolerance. Plants. 2021; 10 (2):299.

Chicago/Turabian Style

Ioannis Vasilakoglou; Kico Dhima; Anastasia Giannakoula; Christos Dordas; Vasiliki Skiada; Kalliope Papadopoulou. 2021. "Carbon Assimilation, Isotope Discrimination, Proline and Lipid Peroxidation Contribution to Barley (Hordeum vulgare) Salinity Tolerance." Plants 10, no. 2: 299.

Journal article
Published: 14 January 2021 in Plants
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Photosynthetic changes and antioxidant activity to oxidative stress were evaluated in sour orange (Citrus aurantium L.) leaves subjected to lead (Pb), copper (Cu) and also Pb + Cu toxicity treatments, in order to elucidate the mechanisms involved in heavy metal tolerance. The simultaneous effect of Pb− and Cu on growth, concentration of malondialdehyde (MDA), hydrogen peroxide (H2O2), chlorophylls, flavonoids, carotenoids, phenolics, chlorophyll fluorescence and photosynthetic parameters were examined in leaves of Citrus aurantium L. plants. Exogenous application of Pb and Cu resulted in an increase in leaf H2O2 and lipid peroxidation (MDA). Toxicity symptoms of both Pb and Cu treated plants were stunted growth and decreased pigments concentration. Furthermore, photosynthetic activity of treated plants exhibited a significant decline. The inhibition of growth in Pb and Cu-treated plants was accompanied by oxidative stress, as indicated by the enhanced lipid peroxidation and the high H2O2 concentration. Furthermore, antioxidants in citrus plants after exposure to high Pb and Cu concentrations were significantly increased compared to control and low Pb and Cu treatments. In conclusion, this study indicates that Pb and Cu promote lipid peroxidation, disrupt membrane integrity, reduces growth and photosynthesis and inhibit mineral nutrition. Considering the potential for adverse human health effects associated with high concentrations of Pb and Cu contained in edible parts of citrus plants the study signals that it is important to conduct further research into the accessibility and uptake of the tested heavy metals in the soil and whether they pose risks to humans.

ACS Style

Anastasia Giannakoula; Ioannis Therios; Christos Chatzissavvidis. Effect of Lead and Copper on Photosynthetic Apparatus in Citrus (Citrus aurantium L.) Plants. The Role of Antioxidants in Oxidative Damage as a Response to Heavy Metal Stress. Plants 2021, 10, 155 .

AMA Style

Anastasia Giannakoula, Ioannis Therios, Christos Chatzissavvidis. Effect of Lead and Copper on Photosynthetic Apparatus in Citrus (Citrus aurantium L.) Plants. The Role of Antioxidants in Oxidative Damage as a Response to Heavy Metal Stress. Plants. 2021; 10 (1):155.

Chicago/Turabian Style

Anastasia Giannakoula; Ioannis Therios; Christos Chatzissavvidis. 2021. "Effect of Lead and Copper on Photosynthetic Apparatus in Citrus (Citrus aurantium L.) Plants. The Role of Antioxidants in Oxidative Damage as a Response to Heavy Metal Stress." Plants 10, no. 1: 155.

Journal article
Published: 08 January 2021 in Agronomy
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One of the most challenging topics for the sustainable agriculture is how to decrease high fertilization rates. A pot experiment, exploring the effects of zeolite (ZEO) and/or vermiculite (VER) as soil amendments, comparing to the soil application of a controlled release fertilizer (CRF), was realized in chestnut plants. Various parameters related to soil fertility, and plant growth, nutrition, and physiology were investigated to gain knowledge towards more sustainable management. After ZEO application and in comparison to CRF, an impressive boost in soil K was achieved. Moreover, soil P and Zn levels were higher in the VER-treated soil, compared to CRF. Leaf K and Ca concentrations were significantly higher in ZEO, compared to the VER treatment; the highest foliar N and Zn concentrations were measured in CRF and VER, respectively. However, significantly lower foliar Mn and Cu were found in VER. The highest root biomass produced in the ZEO treated plants. For most nutrients, their total uptake per plant was higher in CRF and ZEO. Finally, photosynthetic rates were higher in VER (mainly due to non-stomatal factors) and CRF (mainly due to stomatal factors). Our data open a discussion towards the application of ZEO and/or VER as soil amendments in chestnut nurseries and orchards, aiming at partially decreasing fertilization rates and boosting sustainable nutrient management.

ACS Style

Theocharis Chatzistathis; Evgenia Papaioannou; Anastasia Giannakoula; Ioannis E. Papadakis. Zeolite and Vermiculite as Inorganic Soil Amendments Modify Shoot-Root Allocation, Mineral Nutrition, Photosystem II Activity and Gas Exchange Parameters of Chestnut (Castanea sativa Mill) Plants. Agronomy 2021, 11, 109 .

AMA Style

Theocharis Chatzistathis, Evgenia Papaioannou, Anastasia Giannakoula, Ioannis E. Papadakis. Zeolite and Vermiculite as Inorganic Soil Amendments Modify Shoot-Root Allocation, Mineral Nutrition, Photosystem II Activity and Gas Exchange Parameters of Chestnut (Castanea sativa Mill) Plants. Agronomy. 2021; 11 (1):109.

Chicago/Turabian Style

Theocharis Chatzistathis; Evgenia Papaioannou; Anastasia Giannakoula; Ioannis E. Papadakis. 2021. "Zeolite and Vermiculite as Inorganic Soil Amendments Modify Shoot-Root Allocation, Mineral Nutrition, Photosystem II Activity and Gas Exchange Parameters of Chestnut (Castanea sativa Mill) Plants." Agronomy 11, no. 1: 109.

Journal article
Published: 30 October 2020 in Sustainability
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One of the most important issues for modern agriculture is how to decrease fertilization rates and enhance the sustainability of crops, without decreasing yields. Two inorganic (zeolite—zeo; vermiculite—ver) amendments and their mixtures with an organic soil amendment (goat manure) (i.e., zeo + ver, manure + ver, manure + zeo) were tested, and compared to the application of a controlled release fertilizer (CRF), in order to investigate if they were able to satisfy the nutritional needs of Solanum lycopersicon L. plants. For this purpose, a 112-day pot experiment was performed. After zeo and manure application, exchangeable K was increased from 16.5 times to 37.5 times. At the end of the experiment, total plant biomass was significantly higher in the CRF treatment, compared to the ver treatments (ver, ver + manure). Leaf K concentration was significantly higher in the zeo treatment (5.93% dw), compared to those determined in the CRF, ver, and ver + manure. In contrast, significantly higher foliar N was found in the CRF (4.83% dw) and zeo + ver (4.24% dw) treatments, compared to manure + ver. Finally, photosystem II (PSII) activity was significantly higher in ver, and this was ascribed to the optimum foliar Mn found in this treatment (138 mg kg−1 dw). It is expected that these data will provide a thorough insight towards decreasing chemical fertilization inputs and enhancing the sustainability of Solanum lycopersicon L. crop.

ACS Style

Theocharis Chatzistathis; Vasileios Tzanakakis; Anastasia Giannakoula; Polyxeni Psoma. Inorganic and Organic Amendments Affect Soil Fertility, Nutrition, Photosystem II Activity, and Fruit Weight and May Enhance the Sustainability of Solanum lycopersicon L. (cv. ‘Mountain Fresh’) Crop. Sustainability 2020, 12, 9028 .

AMA Style

Theocharis Chatzistathis, Vasileios Tzanakakis, Anastasia Giannakoula, Polyxeni Psoma. Inorganic and Organic Amendments Affect Soil Fertility, Nutrition, Photosystem II Activity, and Fruit Weight and May Enhance the Sustainability of Solanum lycopersicon L. (cv. ‘Mountain Fresh’) Crop. Sustainability. 2020; 12 (21):9028.

Chicago/Turabian Style

Theocharis Chatzistathis; Vasileios Tzanakakis; Anastasia Giannakoula; Polyxeni Psoma. 2020. "Inorganic and Organic Amendments Affect Soil Fertility, Nutrition, Photosystem II Activity, and Fruit Weight and May Enhance the Sustainability of Solanum lycopersicon L. (cv. ‘Mountain Fresh’) Crop." Sustainability 12, no. 21: 9028.

Communication
Published: 09 July 2020 in Diversity
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The aim of this study was to estimate the genetic diversity of Greek and Bulgarian grapevine varieties with the use of microsatellite markers. The studied samples were collected from various productive vineyards, consisting of eight Greek and nine Bulgarian native varieties. In order to create a genetic profile for each sample, a multiplex PCR reaction method was used amplifying simultaneously seven microsatellite loci. Statistical analysis of data showed that there was a high degree of genetic heterogeneity among most of the varieties studied, highlighting the discriminative power of the chosen set of markers. Moreover, the synonymy of (I) Greek Pamid and Bulgarian Pamid and (II) Greek Zoumiatiko and Bulgarian Dimyat was suggested, as each variety pair had identical allele profiles in all loci examined. Regarding the Greek Mavrud and Bulgarian Mavrud varieties, there was a close genetic relationship between them, however, they did not share common alleles in all microsatellite loci and, therefore, should not be characterized as synonyms. On the other hand, Greek and Bulgarian Keratsouda, which were supposed to be common varieties, were found to be genetically different, supporting that these two varieties should be considered as homonyms. Despite the genotypic assay performed herein, we believe that additional molecular work is needed for the efficient management of Greek and Bulgarian grapevine genepools, as well as to safely suggest any synonym or homonym annotation.

ACS Style

Maria Papapetrou; Dimitrios Loukovitis; Orestis Papadopoulos; Zoi Kazlari; Anastasia Peristeraki; Slavina Arsenova; Desislava Bardarova; Desislava Doncheva; Serafeim Theocharis; Constantinos Karagiannidis; Stefanos Koundouras; Anastasia Giannakoula; Stamatis Aggelopoulos; Dimitrios Chatziplis. Genetic Diversity of Local Greek and Bulgarian Grapevine (Vitis Vinifera L.) Varieties. Diversity 2020, 12, 273 .

AMA Style

Maria Papapetrou, Dimitrios Loukovitis, Orestis Papadopoulos, Zoi Kazlari, Anastasia Peristeraki, Slavina Arsenova, Desislava Bardarova, Desislava Doncheva, Serafeim Theocharis, Constantinos Karagiannidis, Stefanos Koundouras, Anastasia Giannakoula, Stamatis Aggelopoulos, Dimitrios Chatziplis. Genetic Diversity of Local Greek and Bulgarian Grapevine (Vitis Vinifera L.) Varieties. Diversity. 2020; 12 (7):273.

Chicago/Turabian Style

Maria Papapetrou; Dimitrios Loukovitis; Orestis Papadopoulos; Zoi Kazlari; Anastasia Peristeraki; Slavina Arsenova; Desislava Bardarova; Desislava Doncheva; Serafeim Theocharis; Constantinos Karagiannidis; Stefanos Koundouras; Anastasia Giannakoula; Stamatis Aggelopoulos; Dimitrios Chatziplis. 2020. "Genetic Diversity of Local Greek and Bulgarian Grapevine (Vitis Vinifera L.) Varieties." Diversity 12, no. 7: 273.

Journal article
Published: 07 August 2012 in Journal of Food Composition and Analysis
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The effects of plant growth regulators (PGRs) such as gibberellic acid (GA3), indole-3-acetic acid (IAA), kinetin, Prohexadione-Calcium (Prohex-Ca), and Topflor on lentil plants were investigated employing physiological and biochemical methods. GA3 increased lentil plants growth by 43%, while growth retardants (Prohex-Ca and Topflor) inhibited it by 34% as expected. Lentil 1000-seeds weight was decreased by 26% in plots supplemented with GA3. In contrast to Prohex-Ca and Topflor increased lentil 1000-seeds weight by 16% and 30%, respectively. In seeds, the total phenolic content (TPC) was significantly correlated (r2 = 0.99) to their total antioxidant capacity (TAC). HPLC–MS detection showed that specific phenolic compounds (catechin, epicatechin, rutin, p-coumaric acid, quercetin, kaempferol, gallic acid and resveratrol) appear to be the compounds with the greatest influence on the TAC values. Catechin is the most abundant phenolic compound in lentil seeds (up to 74 μg g−1 of fresh weight). Kinetin significantly increased rutin, epicatechin and gallic acid content in lentil seeds compared to control (93%, 79% and 49%, respectively). The variability in phenolic content among different PGRs treatments can be used as a benchmark for the selection of specific PGR to obtain lentil seeds with high phenolic content and high antioxidant properties as food ingredients.

ACS Style

Anastasia E. Giannakoula; Ilias F. Ilias; Jelena J. Dragišić Maksimović; Vuk M. Maksimović; Branka D. Živanović. The effects of plant growth regulators on growth, yield, and phenolic profile of lentil plants. Journal of Food Composition and Analysis 2012, 28, 46 -53.

AMA Style

Anastasia E. Giannakoula, Ilias F. Ilias, Jelena J. Dragišić Maksimović, Vuk M. Maksimović, Branka D. Živanović. The effects of plant growth regulators on growth, yield, and phenolic profile of lentil plants. Journal of Food Composition and Analysis. 2012; 28 (1):46-53.

Chicago/Turabian Style

Anastasia E. Giannakoula; Ilias F. Ilias; Jelena J. Dragišić Maksimović; Vuk M. Maksimović; Branka D. Živanović. 2012. "The effects of plant growth regulators on growth, yield, and phenolic profile of lentil plants." Journal of Food Composition and Analysis 28, no. 1: 46-53.