Identifying superior drought-tolerant olive genotypes and their biochemical and some physiological responses to various irrigation levels

Gholami, Rahmatollah; Zahedi, Seyed Morteza

doi:10.1080/01904167.2019.1648672

Cited by 35 publications

(27 citation statements)

References 45 publications

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“…Drought is a harmful environmental 2 issue and is one of the main factors responsible for decreases in growth and yield of agricultural crops around the world 25 . Drought stress decreases the yield and quality of fruits through changing the amounts and activities of photosynthetic pigments as well as osmolyte content and enzyme activity 2 . Recently, nanotechnology has found its way into agricultural systems.…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Water shortage is a major environmental factor which limits the development and growth of plants and decreases the productivity and quality of crops 1 , 2 . Severe drought can also have an adverse effect on plant water use efficiency (WUE) 2 . The key physiological plant responses to drought stress are the synthesis and accumulation of compatible solutes, known as osmolytes or osmoprotectants which lower the cell water potential and enhance the water extraction capacity in environments with limited water resources 3 .…”

Section: Introductionmentioning

confidence: 99%

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Selenium and silica nanostructure-based recovery of strawberry plants subjected to drought stress

Zahedi

Moharrami

Sarikhani

et al. 2020

Sci Rep

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168

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Drought is an important environmental stress that has negative effects on plant growth leading to a reduction in yield. In this study, the positive role of nanoparticles of SiO2, Se, and Se/SiO2 (SiO2-NPs, Se-NPs and Se/SiO2-NPs) has been investigated in modulating negative effects of drought on the growth and yield of strawberry plants. Spraying of solutions containing nanoparticles of SiO2, Se, and Se/SiO2 (50 and 100 mg L−1) improved the growth and yield parameters of strawberry plants grown under normal and drought stress conditions (30, 60, and 100%FC). Plants treated with Se/SiO2 (100 mg L−1) preserved more of their photosynthetic pigments compared with other treated plants and presented higher levels of key osmolytes such as carbohydrate and proline. This treatment also increased relative water content (RWC), membrane stability index (MSI) and water use efficiency (WUE). In addition, exogenous spraying of Se/SiO2 increased drought tolerance through increasing the activity of antioxidant enzymes including catalase (CAT), ascorbate peroxidase (APX), guaiacol peroxidase (GPX) and superoxide dismutase (SOD) as well as decreasing lipid peroxidation and hydrogen peroxide (H2O2) content. Increase in biochemical parameters of fruits such as anthocyanin, total phenolic compounds (TPC), vitamin C and antioxidant activity (DPPH) in strawberry plants treated with Se/SiO2 under drought stress revealed the positive effects of these nanoparticles in improving fruit quality and nutritional value. In general, our results supported the positive effect of the application of selenium and silicon nanoparticles, especially the absolute role of Se/SiO2 (100 mg L−1), on the management of harmful effects of soil drought stress not only in strawberry plants, but also in other agricultural crops.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Selenium and silica nanostructure-based recovery of strawberry plants subjected to drought stress

Zahedi

Moharrami

Sarikhani

et al. 2020

Sci Rep

Self Cite

168

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“…The exposure to stress may increase the accumulation of proline, soluble sugars and other organic osmolytes in the plant shoots and roots (Farooq et al 2018;Zahedi et al 2019). Accumulation of these solutes led to a decrease in the water potential of olive organs and water uptake in the plant became possible (Gholami and Zahedi 2019). As an osmotic adjustment option, proline accumulates more in plants at a higher temperature and under drought stress.…”

Section: Discussionmentioning

confidence: 99%

“…Shoots (especially leaves) are a major sink for the accumulation of proline under stressful conditions (Chun et al 2018). Carbohydrate accumulation is induced by respiratory changes under stress conditions (Gholami and Zahedi 2019). Zawaski and Busov (2014) reported that DELLA proteins and GA 2oxs not only repress growth but enhance plant resistance to stress via activation of ROS-detoxification enzymes, increased carotenoid production as a nonenzymatic antioxidant and ABA biosynthesis.…”

Section: Discussionmentioning

confidence: 99%

Improving seed germination and seedling growth of guava under heat and osmotic stresses by chemical and hormonal seed treatments

et al. 2020

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This study, consisting of two independent experiments, was conducted to optimize presowing guava seed treatments and evaluate the optimized treatments in improving germination and seedling growth of guava under heat and osmotic stresses. In the first experiment, seeds of guava cultivar White Flesh Local I were soaked in water, gibberellic acid (GA 3) (0.05 and 0.1%), hydrochloric acid (HCl) (5 and 10%) and sulfuric acid (H 2 SO 4) (5 and 10%) for 24 and 48 h (for water and GA 3), and 2 and 5 min (for HCl and H 2 SO 4). Seed soaking (priming) with GA 3 (0.1%, at 48 h) and HCl (10%, 2 min) were the most effective treatments to improve seed germination and early seed growth of guava and were used in the second experiment. In the second experiment, treated and untreated seeds were sown in plastic boxes between two layers of filter papers maintained at osmotic potentials of 0, −1.5 and −3 MPa. The germination boxes were incubated at optimal (25 °C) and higher (32 °C) temperatures. Germination was significantly suppressed at a higher temperature and with an increase in the osmotic potential. However, seed treatments with GA 3 and HCl were effective to improve the germination and seedling growth of guava under both temperature and osmotic stresses. In conclusion, chemical and hormonal seed treatments may help improve the seed germination and seedling growth of guava under heat and osmotic stresses by modulation of antioxidant enzymes and leaf proline. Seed treatment with GA 3 (0.1%, 48 h) was the most effective in this regard.

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Determination of Morphological, Pomological, and Biochemical Characteristics of Important Turkish Olive Varieties Grown in the Southeastern Anatolian Region (Turkey) Conditions

Nikpeyma

2023

Erwerbs-Obstbau

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Identifying superior drought-tolerant olive genotypes and their biochemical and some physiological responses to various irrigation levels

Cited by 35 publications

References 45 publications

Selenium and silica nanostructure-based recovery of strawberry plants subjected to drought stress

Selenium and silica nanostructure-based recovery of strawberry plants subjected to drought stress

Improving seed germination and seedling growth of guava under heat and osmotic stresses by chemical and hormonal seed treatments

Determination of Morphological, Pomological, and Biochemical Characteristics of Important Turkish Olive Varieties Grown in the Southeastern Anatolian Region (Turkey) Conditions

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