Hydrogen sulphide‐mediated alleviation and its interplay with other signalling molecules during temperature stress

Abstract

The sessile habit of plants does not provide choices to escape the environmental constraints, leading to negative impacts on their growth and development. This causes significant losses in the agriculture sector and raises serious issues on global food security. Extreme temperatures (high or low) influence several aspects of plant life and can cause reproduction malfunction. Therefore, a strategy for temperature amelioration is necessary for the management of agricultural productivity. Supplementation with various chemicals (e.g. phytohormones, gasotransmitters, osmolytes) is considered a good choice to manage plant stress. Gasotransmitters are well‐recognized for stress mitigation in plants, among which hydrogen sulphide (H2S) has proved promising to alleviate stress. Temperature (heat/cold) stress can stimulate the endogenous production of H2S in plants, and many studies have reported the significance of H2S for temperature stress amelioration. Here, H2S led to positive changes in plant physiological, biochemical and molecular responses, which are usually compromised during stress. Further, H2S also coordinate with other signalling components that act either upstream or downstream during stress mitigation. This review focuses on the significance of H2S for mitigation of temperature stress, with a comprehensive discussion on cross‐talk with other signalling components or supplements (e.g. NO, H2O2, salicylic acid, trehalose, proline). Finally, the review provides a rational assessment and holistic understanding of H2S‐mediated mitigation of extreme temperature stress and addresses the prospects for development of an effective strategy to manage temperature stress.

Sustained Release of Hydrogen Sulfide from Di(t-butanol)dithiophosphate Phenethylamine Salt Encapsulated into Poly(lactic acid) Microparticles to Enhance the Growth of Radish Plants

“…Unfortunately, both potassium and imidazolium salts of D and F were insoluble in these solvents. Moreover, hydrolysis of compound D in 90% H 2 O/D 2 O was investigated at 85 °C and room temperature by 31 P NMR spectroscopy. After 30 days, only 18% hydrolyzed at 85 °C and less than 3% hydrolyzed at room temperature.…”

“…Hydrogen sulfide (H 2 S) is a key gasotransmitter in plants that affects numerous enzymatic pathways within, and between cells, − and the addition of exogenous H 2 S often has a strong positive effect at surprisingly low doses on maize, soybean, wheat, cucumber, peas, tomatoes, broccoli, lettuce, sugar beets, strawberries, radishes, and kiwi plants. ,− H 2 S is produced in cells and found at nanomolar concentrations, and recent work has shown that applying exogenous H 2 S to plants has dramatic effects, including increasing their overall size and mass, protection from high salt concentrations, protection from heat and drought stress, increased root growth, and prolonged shelf life of harvested crops. ,,,− For example, the addition of exogenous H 2 S to plants such as over a dozen different plants increases their ability to withstand salt stress. , Although the process by which exogenous H 2 S enables plants to survive salt stress is complex, it has been shown to increase the activity of antioxidant enzymes, affect the levels of Na + in cells, and regulate several signaling proteins. − The importance of exogenous H 2 S in agriculture has been established, and many current studies investigate the fundamental biochemistry of H 2 S within plants and how to apply H 2 S in a safe, dependable manner . Most of the early work in this field used micro to millimolar concentrations of aqueous H 2 S delivered once or twice daily.…”

Emerging role of hydrogen sulphide as a signalling molecule in plant biology

“…Similar to other abiotic stresses, extreme temperatures (heat and cold) affect plant growth and development and trigger the biosynthesis of H 2 S, which regulates physiological, biochemical and molecular mechanisms, resulting in better growth under several environmental stresses. Mishra et al (2022) provide an assessment and comprehensive review of H 2 S-mediated extreme temperature stress mitigation and addresses effective mitigation strategies to manage heat and cold stresses. Waterlogging is detrimental to plants and impairs the yield of legume crops that are sensitive to submergence.…”

“…Mishra et al . (2022) provide an assessment and comprehensive review of H 2 S‐mediated extreme temperature stress mitigation and addresses effective mitigation strategies to manage heat and cold stresses. Waterlogging is detrimental to plants and impairs the yield of legume crops that are sensitive to submergence.…”

Key role of reactive oxygen species-scavenging system in nitric oxide and hydrogen sulfide crosstalk-evoked thermotolerance in maize seedlings

“…These enzymes and H 2 S have a leading role in numerous physiological processes from seed germination to plant senescence. As mentioned above, H 2 S can not only exert its physiological functions alone ( Li et al., 2016 ; Liu et al., 2021 ) but also regulates the acquirement of stress tolerance including thermotolerance in plants by interacting with NO ( Li et al., 2013 ; Xie et al., 2018 ; Huang et al., 2021 ; Li et al., 2021 ; Gautam et al., 2022a ; Mishra et al., 2022 ; Sehar et al., 2022 ). However, the exact interaction mechanism between H 2 S and NO in plants is not completely clear.…”