Say “NO” to plant stresses: Unravelling the role of nitric oxide under abiotic and biotic stress

Nitric Oxide, Journal Year: 2022, Volume and Issue: 130, P. 36 - 57

Published: Nov. 29, 2022

Language: Английский

---

Hydrogen Sulfide, Ethylene, and Nitric Oxide Regulate Redox Homeostasis and Protect Photosynthetic Metabolism under High Temperature Stress in Rice Plants

Antioxidants, Journal Year: 2022, Volume and Issue: 11(8), P. 1478 - 1478

Published: July 28, 2022

Rising temperatures worldwide due to global climate change are a major scientific issue at present. The present study reports the effects of gaseous signaling molecules, ethylene (200 µL L-1; 2-chloroethylphosphonic acid; ethephon, Eth), nitric oxide (NO; 100 µM sodium nitroprusside; SNP), and hydrogen sulfide (H2S; 200 hydrosulfide, NaHS) in high temperature stress (HS) tolerance, whether or not H2S contributes NO-induced thermo-tolerance photosynthetic protection rice (Oryza sativa L.) cultivars, i.e., Taipei-309, Rasi. Plants exposed an HS 40 °C for six h per day 15 days caused reduction biomass, associated with decreased photosynthesis leaf water status. High increased oxidative by increasing content peroxide (H2O2) thiobarbituric acid reactive substance (TBARS) leaves. These molecules status, osmolytes, antioxidants, plants under non-stress stress. However, effect was more conspicuous than NO H2S. application scavenger hypotaurine (HT) reversed on HS. This supports findings that ameliorating Eth SNP involved Thus, presence can enhance while also protecting plant photosynthesis.

Language: Английский

---

The role of nitric oxide and hydrogen sulfide in regulation of redox homeostasis at extreme temperatures in plants

Frontiers in Plant Science, Journal Year: 2023, Volume and Issue: 14

Published: Feb. 7, 2023

Nitric oxide and hydrogen sulfide, as important signaling molecules (gasotransmitters), are involved in many functions of plant organism, including adaptation to stress factors various natures. As redox-active molecules, NO H 2 S redox regulation functional activity proteins. They also maintaining cell homeostasis due their ability interact directly indirectly (functionally) with ROS, thiols, other molecules. The review considers the involvement nitric sulfide responses low high temperatures. Particular attention is paid role gasotransmitters interaction mediators (in particular, Ca 2+ ions ROS) formation adaptive extreme Pathways stress-induced enhancement synthesis plants considered. Mechanisms effect on some proteins system, well state antioxidant osmoprotective systems during temperatures, were analyzed. Possibilities practical use donors inductors discussed.

Language: Английский

---

Palliating Salt Stress in Mustard through Plant-Growth-Promoting Rhizobacteria: Regulation of Secondary Metabolites, Osmolytes, Antioxidative Enzymes and Stress Ethylene

Plants, Journal Year: 2023, Volume and Issue: 12(4), P. 705 - 705

Published: Feb. 5, 2023

The severity of salt stress is alarming for crop growth and production it threatens food security. Strategies employed the reduction in are not always eco-friendly or sustainable. Plant-growth-promoting rhizobacteria (PGPR) could provide an alternative sustainable strategy owning to its role various metabolic processes. In this study, we have used two strains PGPR, Pseudomonas fluorescens (NAIMCC-B-00340) Azotobacter chroococcum Beijerinck 1901 (MCC 2351), either singly combination, studied their effect amelioration toxicity mustard cultivar Pusa Jagannath via influence on plants' antioxidants' metabolism, photosynthesis growth. Individually, impact was better reducing ethylene, oxidative stress, but maximal alleviation observed with combined application. MDA H2O2 content as indicator decreased by 27.86% 45.18% osmolytes (proline glycine-betaine) increased 38.8% 26.3%, respectively, while antioxidative enzymes (SOD, CAT, APX GR) 58.40, 25.65, 81.081 55.914%, over salt-treated plants through application fluorescens. maximally resulted more cell viability less damage leaf lesser superoxide generation due higher reduced glutathione formation (GSH). Considering obtained results, can supplement PGPR combination subjected prevent photosynthetic reduction, increase yield plants.

Language: Английский

---

Crucial plant processes under heat stress and tolerance through heat shock proteins

Plant Stress, Journal Year: 2023, Volume and Issue: 10, P. 100227 - 100227

Published: Sept. 17, 2023

Global crop production is facing a myriad of challenges and obstacles to achieving food security in the near future. Among all challenges, heat stress (HS) one them. In HS, temperature prime factor responsible for affecting optimum growth plants. Higher temperatures lead changes plants' functional processes negatively affect plant productivity. most plants, reproductive stage sensible greatly hampered by HS. However, some mechanisms were developed mitigate drastic impacts Although, there massive gap sustainability goal under climate change scenario. By considering these facts, present analysis deals with impact HS on vital such as water nutritional status, assimilate partitioning, photosynthetic activity, yield, oxidative damages. This review further discussed molecular shock proteins (HSPs) including sHSPs, HSP60, HSP70, HSP90, HSP100 tolerance. also highlights advanced techniques genome editing, Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR) omics that open exciting avenues several directions related tolerance mechanisms. Further, this gathered information help understanding recent advances through HSPs, which could used developing future strategies warming temperatures. Moreover, supports breeding program high-temperature tolerant lines.

Language: Английский

---

Expanding roles of cross-talk between hydrogen sulfide and nitric oxide under abiotic stress in plants

Plant Physiology and Biochemistry, Journal Year: 2024, Volume and Issue: 214, P. 108852 - 108852

Published: June 17, 2024

Language: Английский

---

The emerging trends and prospects of DNA methylomics for abiotic stress tolerance in legumes

Journal of Plant Biochemistry and Biotechnology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 7, 2025

Language: Английский

---

Hydrogen sulfide (H2S) and potassium (K+) synergistically induce drought stress tolerance through regulation of H+-ATPase activity, sugar metabolism, and antioxidative defense in tomato seedlings

Plant Cell Reports, Journal Year: 2021, Volume and Issue: 40(8), P. 1543 - 1564

Published: June 17, 2021

Language: Английский

---

Melatonin in Plant Defense against Abiotic Stress

Forests, Journal Year: 2021, Volume and Issue: 12(10), P. 1404 - 1404

Published: Oct. 15, 2021

Abiotic stress adversely affects plant growth and metabolism as such reduces productivity. Recognized a major contributor in the production of reactive oxygen species (ROS), it hinders plants through induction oxidative stress. Biostimulants melatonin have multifunctional role, acting defense strategy minimizing effects Melatonin plays important role processes ranging from seed germination to senescence, besides performing function biostimulant improving plant’s In addition its signaling cascade, acts an antioxidant that helps scavenging ROS, generated part different stresses among plants. The current study was undertaken elaborate synthesis regulation plants, emphasizing under various abiotic namely, salt, temperature, herbicides, heavy metals, drought. Additionally, special consideration put on crosstalk with phytohormones overcome

Language: Английский

---

Exogenous melatonin‐mediated regulation of K⁺/Na⁺ transport, H⁺‐ATPase activity and enzymatic antioxidative defence operate through endogenous hydrogen sulphide signalling in NaCl‐stressed tomato seedling roots

Plant Biology, Journal Year: 2021, Volume and Issue: 23(5), P. 797 - 805

Published: July 15, 2021

Abstract Melatonin (Mel) and hydrogen sulphide (H 2 S) have emerged as potential regulators of plant metabolism during abiotic stress. Presence excess NaCl in the soil is one main causes reduced crop productivity worldwide. The present investigation examines role exogenous Mel endogenous H S tomato seedlings grown under Effect 30 µ m on synthesis was examined roots NaCl‐stressed (200 ) seedlings. Also, impact treatments oxidative stress markers, transport K + Na , activity ‐ATPase antioxidant enzymes assessed. Results show that supplemented with had increased levels through enhanced L‐cysteine desulfhydrase activity. association overcame deleterious effect induced retention maintained a higher /Na ratio. Use plasma membrane inhibitors an scavenger revealed Mel‐induced regulation homeostasis seedling operates signalling. Synergistic effects also generation ROS destruction enzymes. Thus, it suggested protective function against S‐dependent pathway, wherein ‐ATPase‐energized secondary active regulates homeostasis.

Language: Английский

---