24-epibrassinolide alleviate drought-induced photoinhibition in Capsicum annuum via up-regulation of AOX pathway

Hu, Wenhai; Yan, Xiaohong; He, Yan; Xi, Rei

doi:10.1016/j.scienta.2018.09.016

Cited by 21 publications

(17 citation statements)

References 36 publications

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“…This mitigates the harmful effects of drought on physiological and biochemical parameters and on fruit yield loss, photosynthesis reduction, and it also encourages pollen germination as well as viability. EBR also induces an alternative oxidase (AOX) pathway (Hu et al, 2019; Hu, Yan, et al, 2013; Kaya et al, 2019; Khamsuk et al, 2018). In another study with drought‐stressed maize leaves, BR (0.1 mg/L) was applied and rescued growth reduction, decreased lipid peroxidation, improved protein content, and increased ROS scavenging system (Anjum et al, 2011).…”

Section: Phytohormones Action and Response Mechanism In Drought Stressmentioning

confidence: 99%

Crosstalk between phytohormones and secondary metabolites in the drought stress tolerance of crop plants: A review

Jogawat

Yadav

Chhaya

et al. 2021

Physiologia Plantarum

245

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Drought stress negatively affects crop performance and weakens global food security. It triggers the activation of downstream pathways, mainly through phytohormones homeostasis and their signaling networks, which further initiate the biosynthesis of secondary metabolites (SMs). Roots sense drought stress, the signal travels to the above-ground tissues to induce systemic phytohormones signaling. The systemic signals further trigger the biosynthesis of SMs and stomatal closure to prevent water loss. SMs primarily scavenge reactive oxygen species (ROS) to protect plants from lipid peroxidation and also perform additional defense-related functions.Moreover, drought-induced volatile SMs can alert the plant tissues to perform drought stress mitigating functions in plants. Other phytohormone-induced stress responses include cell wall and cuticle thickening, root and leaf morphology alteration, and anatomical changes of roots, stems, and leaves, which in turn minimize the oxidative stress, water loss, and other adverse effects of drought. Exogenous applications of phytohormones and genetic engineering of phytohormones signaling and biosynthesis pathways mitigate the drought stress effects. Direct modulation of the SMs biosynthetic pathway genes or indirect via phytohormones' regulation provides drought tolerance. Thus, phytohormones and SMs play key roles in plant development under the drought stress environment in crop plants. | INTRODUCTIONA large segment of the population is going to face food scarcity due to climate change and the gradually decreasing arable land area. Plants are confronted to a variable environment while growing from seedling to mature plant. Different abiotic and biotic stresses affect plant growth and development (Cramer et al., 2011;Fujita et al., 2006;Tuteja & Sopory, 2008). Abiotic stress includes drought, submergence, osmotic stress, salinity stress, oxidative stress, ultra-violet irradiation, wounding, and nutrient depletion. The extremity of optimum factors such as high temperature or low temperature and freezing-thawing is also included in abiotic stresses. Biotic stresses include viruses, bacteria, fungi, algae, worms, nematodes, insects, herbivores, and parasitic plants. Plants have to combat these stressors due to their sessile lifestyle (Cramer et al., 2011;Fujita et al., 2006). More than 50% reduction in average yields of major cereal crops has been reported because of various abiotic stresses. Drought is one of the most important abiotic stresses that negatively influence plant performance and causes harsh effects on biomass and yield (Fahad et al., 2017). A

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Section: Phytohormones Action and Response Mechanism In Drought Stressmentioning

confidence: 99%

Crosstalk between phytohormones and secondary metabolites in the drought stress tolerance of crop plants: A review

Jogawat

Yadav

Chhaya

et al. 2021

Physiologia Plantarum

245

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“…Furthermore, under DS, the gaseous exchange indicators, that is, transpiration, net photosynthesis, intercellular carbon dioxide concentration, and stomatal conductance are affected; thus, the water use efficacy is reduced (Mathobo et al, 2017). Due to the maximum quantum efficiency of photosystem II (PSII), PSII activity and photosynthetic electron transport rate are also reduced in exposure to DS (Hu et al, 2019). Likewise, DS also lessens the photosynthetic pigments (Li et al, 2020).…”

Section: Plant Responses To Drought Stressmentioning

confidence: 99%

“…Likewise, DS also lessens the photosynthetic pigments (Li et al, 2020). DS induced the up‐regulation of alternative oxidase (AOX) pathway and increased the activities of NADP‐malate dehydrogenase and NAD‐malate dehydrogenase (Hu et al, 2019). Moreover, DS also induces the early leaf senescence (Alamri et al, 2020).…”

Section: Plant Responses To Drought Stressmentioning

confidence: 99%

A manipulative interplay between positive and negative regulators of phytohormones: A way forward for improving drought tolerance in plants

Mubarik

Khan

Sajjad

et al. 2021

Physiologia Plantarum

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“…It reduces carbon assimilation and the photosynthetic electron transport chain, thereby increasing photoinhibition [ 16 , 17 , 18 ]. It also increases the NADPH and NADPH/NADP+ and decreases the photosynthetic efficiency and NADPH dissipation in chloroplasts, which also reduces the photosynthetic electron transport chain [ 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Exogenously Used 24-Epibrassinolide Promotes Drought Tolerance in Maize Hybrids by Improving Plant and Water Productivity in an Arid Environment

Desoky

Mansour

Ali

et al. 2021

Plants

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The influence of 24-epibrassinolide (EBR24), applied to leaves at a concentration of 5 μM, on plant physio-biochemistry and its reflection on crop water productivity (CWP) and other agronomic traits of six maize hybrids was field-evaluated under semi-arid conditions. Two levels of irrigation water deficiency (IWD) (moderate and severe droughts; 6000 and 3000 m3 water ha–1, respectively) were applied versus a control (well-watering; 9000 m3 water ha–1). IWD reduced the relative water content, membrane stability index, photosynthetic efficiency, stomatal conductance, and rates of transpiration and net photosynthesis. Conversely, antioxidant enzyme activities and osmolyte contents were significantly increased as a result of the increased malondialdehyde content and electrolyte leakage compared to the control. These negative influences of IWD led to a reduction in CWP and grain yield-related traits. However, EBR24 detoxified the IWD stress effects and enhanced all the above-mentioned parameters. The evaluated hybrids varied in drought tolerance; Giza-168 was the best under moderate drought, while Fine-276 was the best under severe drought. Under IWD, certain physiological traits exhibited a highly positive association with yield and yield-contributing traits or CWP. Thus, exogenously using EBR24 for these hybrids could be an effective approach to improve plant and water productivity under reduced available water in semi-arid environments.

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24-epibrassinolide alleviate drought-induced photoinhibition in Capsicum annuum via up-regulation of AOX pathway

Cited by 21 publications

References 36 publications

Crosstalk between phytohormones and secondary metabolites in the drought stress tolerance of crop plants: A review

Crosstalk between phytohormones and secondary metabolites in the drought stress tolerance of crop plants: A review

A manipulative interplay between positive and negative regulators of phytohormones: A way forward for improving drought tolerance in plants

Exogenously Used 24-Epibrassinolide Promotes Drought Tolerance in Maize Hybrids by Improving Plant and Water Productivity in an Arid Environment

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