Assessment of different wheat genotypes with altered genetic background in response to different salinity levels

Riasat, Mehrnaz; Pessarakli, Mohammad; Niaz, Asra Ahmadi; Saed-Moucheshi, Armin

doi:10.1080/01904167.2018.1462383

Cited by 10 publications

(2 citation statements)

References 23 publications

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“…High salt concentrations are toxic to plants at all growth stages by causing oxidative damage such as oxidation of certain macromolecules such as DNA, proteins, and lipids, due to the production of reactive oxygen species (ROS), ultimately diminishing the growth, economic yield and/or quality of crops (Arora et al 2008;Bela et al 2015). To keep ROS levels tightly regulated and to minimize ROS-derived damages, different antioxidant systems have been evolved in aerobic organisms, including the diverse super-family of peroxidase enzymes (Munns and Gilliham 2015;Riasat et al 2018). The primary scavenger in the detoxification of ROS in plants is superoxide dismutase (SOD), which converts superoxide to hydrogen peroxide (H 2 O 2 ) and molecular oxygen.…”

Section: Introductionmentioning

confidence: 99%

Improving wheat (Triticum aestivum L.) antioxidative defense mechanisms against salinity stress by exogenous application of potassium silicate

Feghhenabi

Hadi

Khodaverdiloo

et al. 2022

Journal of Plant Nutrition

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The primary objective of this study was to investigate the beneficial effects of seed priming and foliar spray of potassium silicate on antioxidant activities under different salinity levels, thereby potentially improving wheat growth. Seeds were soaked into solutions containing potassium silicate (K 2 SiO 3 , 1.5 mM) for 6 h, while foliar spray with K 2 SiO 3 (4 mM) was applied at the early and the late stages of tillering. Lake Urmia water was used to prepare salinity levels of 0, 3, 5, 8, 10, 12, and 14 dS m 21 . For such traits as anthocyanin, catalase, ascorbate peroxidase, guaiacol peroxidase, and superoxide dismutase activity, an initial increase was observed at lower salinity levels; higher salinities subsequently decreased these traits or they remained mostly constant. Salinity also increased phenol, malondialdehyde, hydrogen peroxide, and polyphenol oxidase, but decreased flavonoid, nitrate content, and nitrate reductase activity. Seed priming and foliar spray provided effective approaches to reduce reactive oxygen species (ROS) manifestation in wheat grown under saline conditions. The improved antioxidant defense abilities by seed priming and foliar spray alleviated the oxidative damage of proteins and lipids and improved nitrate content and nitrate reductase activity.

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Section: Introductionmentioning

confidence: 99%

Improving wheat (Triticum aestivum L.) antioxidative defense mechanisms against salinity stress by exogenous application of potassium silicate

Feghhenabi

Hadi

Khodaverdiloo

et al. 2022

Journal of Plant Nutrition

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“…Seeds of the drought stress-tolerant wheat genotype Sirvan and susceptible genotype Moghan3 ( Riasat et al., 2018 ; Mehrabad Pour-Benab et al., 2019 ; Shamloo-Dashtpagerdi et al., 2022a ) were surface-sterilized and stratified in Petri dishes on soaked filter paper at 4 ° C for three days to synchronize germination. The resulting seedlings were transferred to pots, each containing 2 kg of sandy-clay soil.…”

Section: Methodsmentioning

confidence: 99%

Potential role of the regulatory miR1119-MYC2 module in wheat (Triticum aestivum L.) drought tolerance

Shamloo‐Dashtpagerdi¹,

Shahriari²,

Tahmasebi

et al. 2023

Front. Plant Sci.

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MicroRNA (miRNA)-target gene modules are essential components of plants’ abiotic stress signalling pathways Little is known about the drought-responsive miRNA-target modules in wheat, but systems biology approaches have enabled the prediction of these regulatory modules and systematic study of their roles in responses to abiotic stresses. Using such an approach, we sought miRNA-target module(s) that may be differentially expressed under drought and non-stressed conditions by mining Expressed Sequence Tag (EST) libraries of wheat roots and identified a strong candidate (miR1119-MYC2). We then assessed molecular and physiochemical differences between two wheat genotypes with contrasting drought tolerance in a controlled drought experiment and assessed possible relationships between their tolerance and evaluated traits. We found that the miR1119-MYC2 module significantly responds to drought stress in wheat roots. It is differentially expressed between the contrasting wheat genotypes and under drought versus non-stressed conditions. We also found significant associations between the module’s expression profiles and ABA hormone content, water relations, photosynthetic activities, H2O2 levels, plasma membrane damage, and antioxidant enzyme activities in wheat. Collectively, our results suggest that a regulatory module consisting of miR1119 and MYC2 may play an important role in wheat’s drought tolerance.

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Increasing Salinity Tolerance of Crops

Alqahtani¹,

Roy²,

Tester³

2018

Encyclopedia of Sustainability Science and Technology

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Plant growth and yield are severely affected by saline soils. High concentrations of salt in the soil make it difficult for plants to take up water, while the accumulated salts in cells, particularly the sodium (Na +) and chloride (Cl À) ions, are toxic to plant metabolism. These two factors result in a reduction in plant growth, an increase in the rate of leaf senescence, and a loss of crop yield. The fact that significant areas of farmland worldwide are affected by salt brings with it potentially serious implications for crop yield.

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Assessment of different wheat genotypes with altered genetic background in response to different salinity levels

Cited by 10 publications

References 23 publications

Improving wheat (Triticum aestivum L.) antioxidative defense mechanisms against salinity stress by exogenous application of potassium silicate

Improving wheat (Triticum aestivum L.) antioxidative defense mechanisms against salinity stress by exogenous application of potassium silicate

Potential role of the regulatory miR1119-MYC2 module in wheat (Triticum aestivum L.) drought tolerance

Increasing Salinity Tolerance of Crops

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