Dynamic interplay of reactive oxygen and nitrogen species (ROS and RNS) in plant resilience: unveiling the signaling pathways and metabolic responses to biotic and abiotic stresses

Plant Cell Reports, Journal Year: 2024, Volume and Issue: 43(8)

Published: July 18, 2024

Language: Английский

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Proteomic and physiological analyses reveal the mechanisms through which melatonin ameliorates heat stress-induced photoinhibition in Nicotiana tabacum

Plant Physiology and Biochemistry, Journal Year: 2025, Volume and Issue: 221, P. 109665 - 109665

Published: Feb. 19, 2025

Language: Английский

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Metabolic and Functional Interactions of H2S and Sucrose in Maize Thermotolerance through Redox Homeodynamics

International Journal of Molecular Sciences, Journal Year: 2024, Volume and Issue: 25(12), P. 6598 - 6598

Published: June 15, 2024

Hydrogen sulfide (H2S) is a novel gasotransmitter. Sucrose (SUC) source of cellular energy and signaling molecule. Maize the third most common food crop worldwide. However, interaction H2S SUC in maize thermotolerance not widely known. In this study, using seedlings as materials, metabolic functional interactions were investigated. The data show that under heat stress, survival rate tissue viability increased by exogenous SUC, while malondialdehyde content electrolyte leakage reduced indicating could increase thermotolerance. Also, SUC-promoted was enhanced H2S, separately weakened an inhibitor (propargylglycine) scavenger (hypotaurine) SUC-transport (N-ethylmaleimide), suggesting development To establish underlying mechanism H2S–SUC interaction-promoted thermotolerance, redox parameters mesocotyls measured before after stress. indicate activity gene expression H2S-metabolizing enzymes up-regulated whereas had no significant effect on SUC-metabolizing enzymes. addition, catalase, glutathione reductase, ascorbate peroxidase, dehydroascorbate monodehydroascorbate superoxide dismutase reinforced their combination non-heat conditions to varying degrees. Similarly, ascorbic acid, flavone, carotenoid, polyphenol combination, production radicals hydrogen peroxide level impaired these treatments different extents. These results imply sucrose exist formation through homeodynamics. This finding lays theoretical basis for developing climate-resistant crops improving security.

Language: Английский

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Chlorophyll a/b-binding Overexpression 2 Regulates Nitric Oxide Signaling in Arabidopsis Response to Sulfur Deficiency

Current Plant Biology, Journal Year: 2025, Volume and Issue: unknown, P. 100452 - 100452

Published: Feb. 1, 2025

Language: Английский

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Anther Transcriptome Analysis of Two Heat Tolerance-Differentiated Indica Rice Restorer Lines Reveals the Importance of Non-Structural Carbohydrates and ATP in the Regulation of Heat Tolerance

International Journal of Molecular Sciences, Journal Year: 2025, Volume and Issue: 26(7), P. 3161 - 3161

Published: March 29, 2025

Screening and breeding more resistant heat stress restorer lines represent an effective approach to addressing the decline in hybrid rice seed production caused by (HS). However, molecular mechanisms affecting differences resistance of anthers under HS remain unclear. This study compared gene expression patterns two with differing resistances discusses response rice. Under stress, 247 DEGs were co-expressed across varieties involved biological processes such as protein processing carbon metabolism, shock proteins being most ubiquitous. Interestingly, a substantial enrichment genes related non-structural carbohydrates ATP was observed among unique R996 R4628. Simultaneously, contents levels young spikes significantly higher than those suggests that starch, soluble sugars play significant roles tolerance during flowering stage Overall, this provides novel insights into underlying indica informs future strategies for genetic improvement these varieties.

Language: Английский

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The teamwork of melatonin, ethylene and H2S in abiotic stress adaptation in plants

Plant Physiology and Biochemistry, Journal Year: 2025, Volume and Issue: unknown, P. 109889 - 109889

Published: April 1, 2025

Language: Английский

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Metabolic and Functional Interaction of H₂S and Sucrose in Maize Thermotolerance through Redox Homeodynamics

Published: May 20, 2024

Hydrogen sulfide (H2S) is a novel gasotransmitter, sucrose (SUC) both cellular energy and signaling molecule. However, their interaction in maize thermotolerance poorly known. In this study, using seedlings as materials, metabolic functional of H2S SUC was investigated. Data show that under heat stress survival rate tissue viability were increased by exogenous SUC, while malondialdehyde content electrolyte leakage decreased indicating could upraise thermotolerance. Also, SUC-upraised enhanced H2S, weakened inhibitor (propargylglycine) scavenger (hypotaurine) SUC-transport (N-ethylmaleimide). To figure out underlying mechanism H2S-SUC interaction-upraised thermotolerance, redox parameters mesocotyls measured before after stress. The data display activity gene expression H2S-metabolizing enzymes up-regulated whereas had no significant effect on SUC-metabolizing enzymes. Besides, catalase, glutathione reductase, ascorbate peroxidase, dehydroascorbate monodehydroascorbate superoxide dismutase reinforced combination non-heat conditions varying degrees. Similarly, ascorbic acid, flavone, carotenoid, polyphenol combination, production radical hydrogen peroxide level impaired these treatments to different extent. These results imply the exists formation through homeodynamics.

Language: Английский

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Transcriptome and metabolome analyses reveal the mechanisms by which H₂S improves energy and nitrogen metabolism in tall fescue under low‐light stress

Physiologia Plantarum, Journal Year: 2024, Volume and Issue: 176(6)

Published: Nov. 1, 2024

Abstract Hydrogen sulfide (H 2 S) functions as a signaling molecule affecting plant growth, development, and stress adaptation. Tall fescue ( Festuca arundinacea Schreb.), bioenergy crop, encounters significant challenges in agricultural production owing to low light by shading. However, the influence of H S on tall under (LLS) remains unclear. To examine role acclimation light, we conducted combined analyses physiological traits, metabolomics, transcriptomics. These results showed that mitigated LLS‐induced inhibition photosynthesis maintained normal chloroplast ultrastructure boosting expression photosynthesis‐related genes, including PsbQ , PsbR PsaD PsaK PetH thereby enhancing synthesis carbohydrates (sucrose, starch). upregulated key genes (PFK PK IDH G6PD ) connected glycolysis, tricarboxylic acid cycle, pentose phosphate pathway promote carbon metabolism ensure supply skeletons energy required for nitrogen metabolism. application reverted accumulation nitrate changes enzymes glutamate synthase (GOGAT, EC 1.4.1.13), reductase (NR, 1.6.6.1), glutamine synthetase (GS, 6.3.1.2), dehydrogenase (GDH, 1.4.1.2), thus promoting amino decomposition produce proteins involved assimilation use efficiency well specialized Ultimately, C/N ratio fescue, balanced its metabolism, enhanced shade tolerance, increased biomass. provided new insights into resilience LLS.

Language: Английский

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Hydrogen sulfide and ethylene regulate photosynthesis, sugar metabolism, and tolerance to heat stress in the presence of sulfur in rice

Physiologia Plantarum, Journal Year: 2024, Volume and Issue: 176(6)

Published: Nov. 1, 2024

Abstract Heat stress impacts photosynthesis and carbohydrate metabolism, challenging food security. To comprehend the mechanisms of thermotolerance, we examined role ethylene (ET) hydrogen sulfide (H 2 S) with or without sulfur (S) in rice ( Oryza sativa L.). Both ET H S promoted heat tolerance more conspicuously presence S, restoring balance between carbon assimilation utilization. The enhanced S‐treated plants under was linked increased relative expression Rubisco subunits rbcS rbcL metabolizing, including Sucrose Synthase SuSy2 ) transport 1 SUT1 ). Notably, application showed highest increase 2.3, 3.2, 3.0, 2.4‐fold , rbcL, SuSy2, respectively, compared to alone. prominently starch content, total soluble sugar, invertase activity by 59.3%, 35.7%, 25.9%, also synthase granule‐bound 47.2% 32.8%, heat‐stressed plants. treatment plus elevated cysteine GSH content antioxidant enzymes maintain cellular redox potential stress. These observed responses were less pronounced treated hypotaurine (HT; scavenger) than those norbornadiene (NBD; inhibitor), underscoring superior over mitigating present study's findings explain that is crucial for ET‐mediated response augmenting rice.

Language: Английский

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The mechanisms of melatonin action in shielding photosynthesis during heat stress

CABI Reviews, Journal Year: 2024, Volume and Issue: unknown

Published: July 17, 2024

Abstract The escalating global climate shifts lead to several negative impacts, including a continuous increase in average temperatures, imposing significant consequences on plant physiology, biochemical dynamics, and molecular processes. Central these ramifications is the process of photosynthesis, pivotal for carbohydrate synthesis essential sustaining growth amidst normal or stressful environmental conditions. Exposure heat stress (HS) negatively affects photosynthetic potential, primarily due increased reactive oxygen species, disrupting optimal functionality apparatus. Melatonin (MLT) has emerged as multifaceted signaling molecule exhibiting promising capabilities mitigating adverse effects abiotic HS plants. While substantial body literature addresses enhancement resilience various stresses using MLT, present review specifically focuses impact MLT photosynthesis during HS. It emphasizes MLT’s role regulating chlorophyll degradation, stomatal movement, safeguarding proteins, under This could be achieved by mechanisms enhancing transcription photosystem genes, activating antioxidant defenses, promoting xanthophyll cycle, modulating enzymes involved metabolism. Consequently, this aims enhance our understanding how mediates protection HS, offering insights development heat-tolerant crops.

Language: Английский

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