GR24-mediated enhancement of salt tolerance and roles of H2O2 and Ca2+ in regulating this enhancement in cucumber

Zhang, Xiaohua; Ma, Cheng; Zhang, Lu; Su, Min; Juan, Wang; Zheng, Sheng; Zhang, Tengguo

doi:10.1016/j.jplph.2022.153640

Cited by 17 publications

(11 citation statements)

References 56 publications

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“…Their role in enhancing plant salt-stress tolerance is quite promising. For instance, Zhang et al (2022a) evaluated the exogenous applications of SLs on salt-stressed cucumber seedlings. The authors observed that the application of SL alleviated salt-stress damage by regulating photosynthesis, enhancing the efficiency of ascorbate–glutathione (AsA–GSH) cycle, and scavenging excessive ROS.…”

Section: Improved Salt Tolerance By Different Priming Agentsmentioning

confidence: 99%

Chemical priming enhances plant tolerance to salt stress

et al. 2022

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Salt stress severely limits the productivity of crop plants worldwide and its detrimental effects are aggravated by climate change. Due to a significant world population growth, agriculture has expanded to marginal and salinized regions, which usually render low crop yield. In this context, finding methods and strategies to improve plant tolerance against salt stress is of utmost importance to fulfill food security challenges under the scenario of the ever-increasing human population. Plant priming, at different stages of plant development, such as seed or seedling, has gained significant attention for its marked implication in crop salt-stress management. It is a promising field relying on the applications of specific chemical agents which could effectively improve plant salt-stress tolerance. Currently, a variety of chemicals, both inorganic and organic, which can efficiently promote plant growth and crop yield are available in the market. This review summarizes our current knowledge of the promising roles of diverse molecules/compounds, such as hydrogen sulfide (H2S), molecular hydrogen, nitric oxide (NO), hydrogen peroxide (H2O2), melatonin, chitosan, silicon, ascorbic acid (AsA), tocopherols, and trehalose (Tre) as potential primers that enhance the salinity tolerance of crop plants.

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Section: Improved Salt Tolerance By Different Priming Agentsmentioning

confidence: 99%

Chemical priming enhances plant tolerance to salt stress

et al. 2022

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“…The effects of GR24 treatments on responses to high salinity were tested in several species: arabidopsis (Ha et al, 2014); beet ( Brassica napus L.) (N. Ma et al, 2017); rice (Ling et al, 2020); cucumber ( Cucumis sativus L.) (X.‐H. Zhang et al, 2022); tomato (H. Liu, Li, et al, 2022); wheat ( Triticum aestivum L.) (Kausar & Shahbaz, 2017); sunflower ( Helianthus annuus L.) (Sarwar & Shahbaz, 2019, 2020; Zulfiqar et al, 2021); wild sage ( Salvia nemorosa L.) (Sharifi & Bidabadi, 2020); corn ( Zea mays ) (Iftikhar et al, 2022); and apple tree ( Malus hupehensis Rehd) (C. Ma et al, 2022; Zheng et al, 2021). A realignment of physiological and molecular indicators to unstressed controls was consistently observed following treatment, namely in terms of protection from a drop in germination efficiency, biomass and/or chlorophyll content loss; maintenance of gas exchange parameters (net photosynthetic rate, stomatal conductance, transpiration); and lower malondialdehyde content (MDA, a biomarker of polyunsaturated lipid peroxidation that accumulates in stressed cells).…”

Section: Strigolactones As Regulators Of Stress Tolerancementioning

confidence: 99%

“…Treatment with DPI (diphenyleneiodonium chloride, an NADPH oxidase inhibitor), DMTU (dimethylthiourea, an H 2 O 2 scavenger) or EGTA (ethylene glycol tetraacetic acid, a Ca 2+ chelating agent) can reverse the positive effect of rac‐ GR24 treatment on salt‐stressed plants, as observed in cucumber (X.‐H. Zhang et al, 2022); this supports the view that H 2 O 2 and Ca 2+ are both indispensable to GR24 action. Finally, both rac‐ GR24 and GSNO (the NO donor S‐nitrosoglutathione) have been tested during salt stress in tomato.…”

Section: Strigolactones As Regulators Of Stress Tolerancementioning

confidence: 99%

“…The effects of GR24 treatments on responses to high salinity were tested in several species: arabidopsis (Ha et al, 2014); beet (Brassica napus L.) (N. Ma et al, 2017); rice (Ling et al, 2020); cucumber (Cucumis sativus L.) (X.-H. Zhang et al, 2022); tomato (H. Liu, Li, et al, 2022); wheat (Triticum aestivum L.) (Kausar & Shahbaz, 2017); sunflower (Helianthus annuus L.) (Sarwar & Shahbaz, 2019Zulfiqar et al, 2021); wild sage (Salvia nemorosa L.) (Sharifi & Bidabadi, 2020); corn (Zea mays) (Iftikhar et al, 2022); and apple tree (Malus hupehensis Rehd) (C. Ma et al, 2022;Zheng et al, 2021) A mixed stress-coping strategy (avoidance and tolerance) seems induced by GR24 (e.g., by increasing root/shoot biomass ratios or reducing the uptake of soil pollutants).…”

Section: Induction Of Tolerance To Drought and Salinity Stressmentioning

confidence: 99%

“…When measured, ROS content generally increases less in the presence of GR24 during stress than during stress alone, while electrolyte leakage and Na + /K + imbalance are reduced. Treatment with DPI (diphenyleneiodonium chloride, an NADPH oxidase inhibitor), DMTU (dimethylthiourea, an H 2 O 2 scavenger) or EGTA (ethylene glycol tetraacetic acid, a Ca 2+ chelating agent) can reverse the positive effect of rac-GR24 treatment on saltstressed plants, as observed in cucumber (X.-H Zhang et al, 2022)…”

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confidence: 99%

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Strigolactones as a hormonal hub for the acclimation and priming to environmental stress in plants

Trasoletti¹,

Visentin²,

Campo³

et al. 2022

Plant Cell & Environment

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Strigolactones are phytohormones with many attributed roles in development, and more recently in responses to environmental stress. We will review evidence of the latter in the frame of the classic distinction among the three main stress acclimation strategies (i.e., avoidance, tolerance and escape), by taking osmotic stress in its several facets as a non‐exclusive case study. The picture we will sketch is that of a hormonal family playing important roles in each of the mechanisms tested so far, and influencing as well the build‐up of environmental memory through priming. Thus, strigolactones appear to be backstage operators rather than frontstage players, setting the tune of acclimation responses by fitting them to the plant individual history of stress experience.

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Exogenous Melatonin and CaCl2 Alleviate Cold-Induced Oxidative Stress and Photosynthetic Inhibition in Cucumber Seedlings

Pei

Bai

et al. 2022

J Plant Growth Regul

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GR24-mediated enhancement of salt tolerance and roles of H2O2 and Ca2+ in regulating this enhancement in cucumber

Cited by 17 publications

References 56 publications

Chemical priming enhances plant tolerance to salt stress

Chemical priming enhances plant tolerance to salt stress

Strigolactones as a hormonal hub for the acclimation and priming to environmental stress in plants

Exogenous Melatonin and CaCl2 Alleviate Cold-Induced Oxidative Stress and Photosynthetic Inhibition in Cucumber Seedlings

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