Plant photosynthesis under heat stress: Effects and management

Environmental and Experimental Botany, Journal Year: 2022, Volume and Issue: 206, P. 105178 - 105178

Published: Dec. 9, 2022

Language: Английский

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Hydrogen sulfide signaling in plant response to temperature stress

Frontiers in Plant Science, Journal Year: 2024, Volume and Issue: 15

Published: March 13, 2024

For the past 300 years, hydrogen sulfide (H 2 S) has been considered a toxic gas. Nowadays, it found to be novel signaling molecule in plants involved regulation of cellular metabolism, seed germination, plant growth, development, and response environmental stresses, including high temperature (HT) low (LT). As molecule, H S can actively synthesized degraded cytosol, chloroplasts, mitochondria cells by enzymatic non-enzymatic pathways maintain homeostasis. To date, receptors for have not found. It usually exerts physiological functions through persulfidation target proteins. In 10 gained much attention. Therefore, this review, based on that same attention, homeostasis, protein persulfidation, role HT LT stress were summarized. Also, common mechanisms S-induced tolerance updated. These involve restoration biomembrane integrity, synthesis proteins, enhancement antioxidant system methylglyoxal (MG) detoxification system, improvement water homeostasis reestablishment Ca 2+ acid-base balance. updates lay foundation further understanding acquiring temperature-stress-resistant crops develop sustainable food agriculture.

Language: Английский

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Hydrogen sulfide mechanism of action in plants; from interaction with regulatory molecules to persulfidation of proteins

Nitric Oxide, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 1, 2025

Language: Английский

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The Crosstalk of Melatonin and Hydrogen Sulfide Determines Photosynthetic Performance by Regulation of Carbohydrate Metabolism in Wheat under Heat Stress

Plants, Journal Year: 2021, Volume and Issue: 10(9), P. 1778 - 1778

Published: Aug. 26, 2021

Photosynthesis is a pivotal process that determines the synthesis of carbohydrates required for sustaining growth under normal or stress situation. Stress exposure reduces photosynthetic potential owing to excess reactive oxygen species disturb proper functioning apparatus. This decreased photosynthesis associated with disturbances in carbohydrate metabolism resulting reduced stress. We evaluated importance melatonin reducing heat stress-induced severity wheat (Triticum aestivum L.) plants. The plants were subjected 25 °C (optimum temperature) 40 (heat stress) 15 days at 6 h time duration and then developed 30 days. Heat led oxidative increased production thiobarbituric acid substances (TBARS) hydrogen peroxide (H2O2) content accrual total soluble sugars, starch enzymes which reflected photosynthesis. Application not only through lowering TBARS H2O2 content, augmenting activity antioxidative but also plant was needed provide energy carbon skeleton developing However, increase these parameters mediated via sulfide (H2S), as inhibition H2S by hypotaurine (HT; scavenger) reversed ameliorative effect melatonin. suggests crosstalk protecting regulation metabolism.

Language: Английский

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Exogenously-Sourced Ethylene Positively Modulates Photosynthesis, Carbohydrate Metabolism, and Antioxidant Defense to Enhance Heat Tolerance in Rice

International Journal of Molecular Sciences, Journal Year: 2022, Volume and Issue: 23(3), P. 1031 - 1031

Published: Jan. 18, 2022

The effect of exogenously-applied ethylene sourced from ethephon (2-chloroethyl phosphonic acid)was studied on photosynthesis, carbohydrate metabolism, and high-temperature stress tolerance in Taipei-309 Rasi cultivars rice (Oryza sativa L.). Heat increased the content H2O2 thiobarbituric acid reactive substances (TBARS)more than Taipei-309. Further, a significant decline sucrose, starch, metabolism enzyme activity photosynthesis was also observed response to heat stress. application reduced TBARS by enhancing enzymatic antioxidant defense system improved growth more conspicuously under enhanced up-regulating psbA psbB genes photosystem II heat-stressed plants. Interestingly, foliar ethephoneffectively down-regulated high-temperature-stress-induced elevated biosynthesis gene expression. Overall, optimized levels regulate reducing adverse effects photosynthesis. These findings suggest that regulates via system, thereby influencing rice.

Language: Английский

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Methyl Jasmonate Protects the PS II System by Maintaining the Stability of Chloroplast D1 Protein and Accelerating Enzymatic Antioxidants in Heat-Stressed Wheat Plants

Antioxidants, Journal Year: 2021, Volume and Issue: 10(8), P. 1216 - 1216

Published: July 28, 2021

The application of 10 µM methyl jasmonate (MeJA) for the protection wheat (Triticum aestivum L.) photosystem II (PS II) against heat stress (HS) was studied. Heat induced at 42 °C to established plants, which were then recovered 25 and monitored during their growth study duration. Application MeJA resulted in increased enzymatic antioxidant activity that reduced content hydrogen peroxide (H2O2) thiobarbituric acid reactive substances (TBARS) enhanced photosynthetic efficiency. Exogenous had a beneficial effect on chlorophyll fluorescence under HS pigment system (PS) system, as observed JIP-test, new tool induction curve. improved quantum yield electron transport (ETo/CS) well flux each reaction center (ET0/RC). However, specific energy fluxes per (RC), i.e., TR0/RC (trapping) DI0/RC (dissipation), by MeJA. These results indicate affects efficiency PS stabilizing D1 protein, increasing its abundance, enhancing expression psbA psbB genes HS, encode proteins core RC complex. Thus, is potential protect protein plants accelerate recovery capacity.

Language: Английский

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Nitric Oxide and Abscisic Acid Mediate Heat Stress Tolerance through Regulation of Osmolytes and Antioxidants to Protect Photosynthesis and Growth in Wheat Plants

Antioxidants, Journal Year: 2022, Volume and Issue: 11(2), P. 372 - 372

Published: Feb. 12, 2022

Nitric oxide (NO) and abscisic acid (ABA) play a significant role to combat abiotic stress. Application of 100 µM sodium nitroprusside (SNP, NO donor) or ABA alleviated heat stress effects on photosynthesis growth wheat (Triticum aestivum L.) plants exposed 40 °C for 6 h every day 15 days. We have shown that synergistically interact reduce the via reducing content H2O2 thiobarbituric reactive substances (TBARS), as well maximizing osmolytes production activity expression antioxidant enzymes. The inhibition using c-PTIO (2-4 carboxyphenyl-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide) fluridone (Flu), respectively, reduced osmolyte metabolism tolerance. significantly ABA-induced metabolism, exhibiting function in alleviation was dependent can be enhanced with supplementation.Thus, regulating enzymes together could act possible strategy

Language: Английский

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Hydrogen sulfide and nitric oxide are involved in melatonin-induced salt tolerance in cucumber

Plant Physiology and Biochemistry, Journal Year: 2021, Volume and Issue: 167, P. 101 - 112

Published: July 28, 2021

Language: Английский

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Hydrogen sulfide: an emerging component against abiotic stress in plants

Plant Biology, Journal Year: 2021, Volume and Issue: 24(4), P. 540 - 558

Published: Dec. 6, 2021

Abstract As a result of climate change, abiotic stresses are the most common cause crop losses worldwide. Abiotic significantly impair plants' physiological, biochemical, molecular and cellular mechanisms, limiting productivity under adverse conditions. However, plants can implement essential mechanisms against stressors to maintain their growth persistence such stressful environments. In nature, have developed several adaptations defence mitigate stress. Moreover, recent research has revealed that signalling molecules like hydrogen sulfide (H 2 S) play crucial role in mitigating effects environmental by implementing physiological biochemical mechanisms. Mainly, H S helps antioxidant systems, interacts with other nitric oxide (NO), reactive oxygen species (ROS), phytohormones, etc. These well‐known as key players moderate stresses. Currently, little progress been made understanding basis protective S; however, it is imperative understand using state‐of‐the‐art CRISPR‐Cas gene‐editing tool. Subsequently, genetic engineering could provide promising approach unravelling stress tolerance mediated exogenous/endogenous S. Here, we review advances beneficial roles conferring multiple plants. Further, also discuss interaction crosstalk between signal molecules; well highlighting some engineering‐based current future directions.

Language: Английский

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Nitric oxide and hydrogen sulfide work together to improve tolerance to salinity stress in wheat plants by upraising the AsA-GSH cycle

Plant Physiology and Biochemistry, Journal Year: 2022, Volume and Issue: 194, P. 651 - 663

Published: Nov. 30, 2022

Language: Английский

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