Role of Plant Secondary Metabolites and Phytohormones in Drought Tolerance: A Review

Ahmad, Sarfraz; Belwal, Vikas; Punia, Sumer Singh; Ram, Manohar; Dalip, Dalip; Rajput, Shyam Singh; Kunwar, Ram; Meena, Manoj; Gupta, Deepak; Kumawat, Girdhari Lal; Hussain, Touseef; Mohamed, Heba I.

doi:10.1007/s10343-022-00795-z

Cited by 12 publications

(3 citation statements)

References 159 publications

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“…Stomatal movements play a pivotal role in regulating the uptake of carbon dioxide (CO 2 ) for photosynthesis and thereby exert a profound influence on overall plant productivity . Multiple factors, including biotic and abiotic stresses, various plant hormones, the modulation of gene expression, and the production of metabolites, collectively influence stomatal aperture. , Among plant hormones, abscisic acid (ABA) plays dominant roles, particularly in limiting stomatal aperture size under environmental stress . As signaling molecules, ROS can also regulate stomatal aperture, but excessive ROS accumulation may disrupt chloroplasts, resulting in reduced crop yields .…”

Section: Introductionmentioning

confidence: 99%

“…20,21 Among plant hormones, abscisic acid (ABA) plays dominant roles, particularly in limiting stomatal aperture size under environmental stress. 21 As signaling molecules, ROS can also regulate stomatal aperture, but excessive ROS accumulation may disrupt chloroplasts, resulting in reduced crop yields. 22 Stomatal closure leads to ROS production via photorespiration and the overreduction of the chloroplast electron transport chain, which decreases both plant growth and crop yield.…”

Section: Introductionmentioning

confidence: 99%

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Heat Waves Coupled with Nanoparticles Induce Yield and Nutritional Losses in Rice by Regulating Stomatal Closure

Guo,

Hu,

et al. 2024

ACS Nano

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The frequency, duration, and intensity of heat waves (HWs) within terrestrial ecosystems are increasing, posing potential risks to agricultural production. Cerium dioxide nanoparticles (CeO2 NPs) are garnering increasing attention in the field of agriculture because of their potential to enhance photosynthesis and improve stress tolerance. In the present study, CeO2 NPs decreased the grain yield, grain protein content, and amino acid content by 16.2, 23.9, and 10.4%, respectively, under HW conditions. Individually, neither the CeO2 NPs nor HWs alone negatively affected rice production or triggered stomatal closure. However, under HW conditions, CeO2 NPs decreased the stomatal conductance and net photosynthetic rate by 67.6 and 33.5%, respectively. Moreover, stomatal closure in the presence of HWs and CeO2 NPs triggered reactive oxygen species (ROS) accumulation (increased by 32.3–57.1%), resulting in chloroplast distortion and reduced photosystem II activity (decreased by 9.4–36.4%). Metabolic, transcriptomic, and quantitative real-time polymerase chain reaction (qRT-PCR) analyses revealed that, under HW conditions, CeO2 NPs activated a stomatal closure pathway mediated by abscisic acid (ABA) and ROS by regulating gene expression (PP2C, NCED4, HPCA1, and RBOHD were upregulated, while CYP707A and ALMT9 were downregulated) and metabolite levels (the content of γ-aminobutyric acid (GABA) increased while that of gallic acid decreased). These findings elucidate the mechanism underlying the yield and nutritional losses induced by stomatal closure in the presence of CeO2 NPs and HWs and thus highlight the potential threat posed by CeO2 NPs to rice production during HWs.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Heat Waves Coupled with Nanoparticles Induce Yield and Nutritional Losses in Rice by Regulating Stomatal Closure

Guo,

Hu,

et al. 2024

ACS Nano

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“…Major environmental stresses affecting crop performance are biotic or abiotic. Water shortage is the most important stress factor that limits crop growth and production via disruption of physiological and metabolic activities (Ahmad et al, 2022). Reduction in cell turgor is the first sign of drought stress in many plants, which decreases plant growth and development.…”

Section: Introductionmentioning

confidence: 99%

Foliar Spray of Salicylic Acid Improved Yield Parameters and Essential Oil Production of Dill Under Water Deficit

SOLHI-KHAJEHMARJAN,

GHASSEMI-GOLEZANI

2023

AgricultForest

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Drought stress causes physiological disorders and growth restriction, leading to a decrease in crop productivity in the field. Foliar spray of salicylic acid may reduce the adverse effects of this stress on plant performance. Thus, this experiment was laid out as split plot with RCB design in three replicates to assess changes in morpho-physiological traits and essential oil production of dill (Anethum graveolens L.) seeds in response to irrigation intervals (water supply after 70, 100, 130, 160 mm evaporation) and foliar spray of water (control) and salicylic acid (0.6, 1.2 mM). The results showed that, plant height, plant biomass, seeds per umbel and plant were diminished due to water deficit, leading to a decline in seed yield. 1000-seed weight was slightly increased under stress, indicating the extent of drought tolerance of dill plants. Application of salicylic acid improved plant height, branches per plant, leaves per plant, umbels per plant, 1000-seed weight, plant biomass and finally seed yield under different irrigation intervals, especially under water limitation. Essential oil content and yield of seeds were increased with decreasing water supply up to moderate stress. The percentage and yield of essential oil were enhanced up to 54 days after flowering, and thereafter were slightly reduced. In general, application of 1.2 mM salicylic acid on non-stressed and drought-stressed plants was the superior treatment to improve field performance and essential oil production of dill. Therefore, drought tolerance and performance of plants can be promoted by salicylic acid treatment.

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Mitogen-Activated Protein Kinase: A Potent Signaling Protein that Combats Biotic and Abiotic Stress in Plants

Khan,

Shah,

Basit

et al. 2024

J Plant Growth Regul

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Role of Plant Secondary Metabolites and Phytohormones in Drought Tolerance: A Review

Cited by 12 publications

References 159 publications

Heat Waves Coupled with Nanoparticles Induce Yield and Nutritional Losses in Rice by Regulating Stomatal Closure

Heat Waves Coupled with Nanoparticles Induce Yield and Nutritional Losses in Rice by Regulating Stomatal Closure

Foliar Spray of Salicylic Acid Improved Yield Parameters and Essential Oil Production of Dill Under Water Deficit

Mitogen-Activated Protein Kinase: A Potent Signaling Protein that Combats Biotic and Abiotic Stress in Plants

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