Ethylene and Jasmonates Signaling Network Mediating Secondary Metabolites under Abiotic Stress

International Journal of Molecular Sciences, Journal Year: 2023, Volume and Issue: 24(6), P. 5990 - 5990

Published: March 22, 2023

Plants are sessile organisms that face environmental threats throughout their life cycle, but increasing global warming poses an even more existential threat. Despite these unfavorable circumstances, plants try to adapt by developing a variety of strategies coordinated plant hormones, resulting in stress-specific phenotype. In this context, ethylene and jasmonates (JAs) present fascinating case synergism antagonism. Here, Ethylene Insensitive 3/Ethylene Insensitive-Like Protein1 (EIN3/EIL1) Jasmonate-Zim Domain (JAZs)-MYC2 the JAs signaling pathways, respectively, appear act as nodes connecting multiple networks regulate stress responses, including secondary metabolites. Secondary metabolites multifunctional organic compounds play crucial roles acclimation plants. exhibit high plasticity metabolism, which allows them generate near-infinite chemical diversity through structural modifications, likely have selective adaptive advantage, especially climate change challenges. contrast, domestication crop has resulted or loss phytochemicals, making significantly vulnerable stresses over time. For reason, there is need advance our understanding underlying mechanisms hormones respond abiotic stress. This knowledge may help improve adaptability resilience changing climatic conditions without compromising yield productivity. Our aim review was provide detailed overview responses mediated impact on

Language: Английский

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The Ethylene Biosynthetic Enzymes, 1-Aminocyclopropane-1-Carboxylate (ACC) Synthase (ACS) and ACC Oxidase (ACO): The Less Explored Players in Abiotic Stress Tolerance

Biomolecules, Journal Year: 2024, Volume and Issue: 14(1), P. 90 - 90

Published: Jan. 11, 2024

Ethylene is an essential plant hormone, critical in various physiological processes. These processes include seed germination, leaf senescence, fruit ripening, and the plant's response to environmental stressors. biosynthesis tightly regulated by two key enzymes, namely 1-aminocyclopropane-1-carboxylate synthase (ACS) oxidase (ACO). Initially, prevailing hypothesis suggested that ACS limiting factor ethylene pathway. Nevertheless, accumulating evidence from studies has demonstrated ACO, under specific circumstances, acts as rate-limiting enzyme production. Under normal developmental processes, ACO collaborate maintain balanced production, ensuring proper growth physiology. However, abiotic stress conditions, such drought, salinity, extreme temperatures, or pathogen attack, regulation of becomes for plants' survival. This review highlights structural characteristics examines transcriptional, post-transcriptional, post-translational their role conditions. Reviews on signaling adaptation are available. a delineating acclimation unavailable. Exploring how particular isoforms contribute stresses understanding they can guide development focused strategies. strategies aim enhance ability cope with challenges more effectively.

Language: Английский

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Melatonin Role in Plant Growth and Physiology under Abiotic Stress

International Journal of Molecular Sciences, Journal Year: 2023, Volume and Issue: 24(10), P. 8759 - 8759

Published: May 15, 2023

Phyto-melatonin improves crop yield by mitigating the negative effects of abiotic stresses on plant growth. Numerous studies are currently being conducted to investigate significant performance melatonin in crops regulating agricultural growth and productivity. However, a comprehensive review pivotal phyto-melatonin morpho-physiological biochemical activities under needs be clarified. This focused research activities, regulation, redox status, signal transduction plants stresses. Furthermore, it also highlighted role defense systems as biostimulants stress conditions. The study revealed that enhances some leaf senescence proteins, protein further interacts with plant’s photosynthesis activity, macromolecules, changes response stress. Our goal is thoroughly evaluate stress, which will help us better understand mechanism regulates yield.

Language: Английский

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Nitric oxide confers cadmium tolerance in fragrant rice by modulating physio-biochemical processes, yield attributes, and grain quality traits

Ecotoxicology and Environmental Safety, Journal Year: 2023, Volume and Issue: 261, P. 115078 - 115078

Published: June 6, 2023

Cadmium (Cd) stress causes serious disruptions in plant metabolism, physio-biochemical processes, crop yield, and quality characters. Nitric oxide (NO) improves the features nutritional contents of fruit plants. However, how NO confers Cd toxicity fragrant rice plants, is sparse. Hence, present study investigated effects 50 µM donor sodium nitroprusside (SNP) on growth attributes, grain traits under (100 mg kg−1 soil). The results revealed that diminished growth, impaired photosynthetic apparatus antioxidant defense system, deteriorated traits. foliar application SNP mitigated by improving gas exchange attributes. Higher electrolyte leakage (EL) was accompanied with elevated levels malondialdehyde (MDA) hydrogen peroxide (H2O2) stress; however, exogenous reduced them. activities relative expression enzymatic antioxidants; superoxide dismutase (SOD), peroxidase (POD), catalase (CAT) ascorbate (APX) non-enzymatic antioxidants, glutathione (GSH) were stress, while regulated their activity transcript abundances. improved yield 2-acetyl-1-pyrroline content 57.68 % 75.54 respectively, which concomitant higher biomass accumulation, efficiency, pigment contents, an system. Collectively, our concluded characters Cd-affected soil.

Language: Английский

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Melatonin influences methyl jasmonate-induced protection of photosynthetic activity in wheat plants against heat stress by regulating ethylene-synthesis genes and antioxidant metabolism

Scientific Reports, Journal Year: 2023, Volume and Issue: 13(1)

Published: May 8, 2023

Melatonin (MT) and methyl jasmonate (MeJA) play important roles in the adaptation of plants to different stress factors by modulating tolerance mechanisms. The present study reports involvement MT (100 µM) MeJA (10 µM)-induced photosynthetic performance heat acclimation through regulation antioxidant metabolism ethylene production wheat (Triticum aestivum L.) plants. Plants exposed 40 °C for 6 h per day 15 days allowed retrieve at 28 showed enhanced oxidative metabolism, increased 1-aminocyclopropane-1-carboxylic acid (ACC) synthase (ACS) activity production, decreased performance. In contrast, exogenously applied reduced improved S-assimilation (+ 73.6% S content), defense system 70.9% SOD, + 115.8% APX 104.2% GR, 49.5% GSH), optimized level 58.4% resulting photosynthesis 75%. use p-chlorophenyl alanine, a biosynthesis inhibitor along with presence performance, ATP-S GSH content, substantiated requirement MeJA-induced response under stress. These findings suggest that evoked plant's ability withstand regulating S-assimilation, system, improving was dependent on MT.

Language: Английский

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Hydrogen sulfide and ethylene regulate sulfur-mediated stomatal and photosynthetic responses and heat stress acclimation in rice

Plant Physiology and Biochemistry, Journal Year: 2024, Volume and Issue: 207, P. 108437 - 108437

Published: Feb. 1, 2024

Language: Английский

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The Ethylene Biosynthetic Enzymes, 1-Aminocyclopropane-1-Carboxylate (ACC) Synthase (ACS) and ACC Oxidase (ACO): The Less Explored Players in Abiotic Stress Tolerance

Published: Jan. 8, 2024

Ethylene is an essential plant hormone critical in various physiological processes. These processes include seed germination, leaf senescence, fruit ripening, and the plant's response to environmental stressors. biosynthesis tightly regulated by two key enzymes, namely 1-aminocyclopropane-1-carboxylate synthase (ACS) oxidase (ACO). Initially, prevailing hypothesis suggested that ACS limiting factor ethylene pathway. Nevertheless, accumulating evidence from studies has demonstrated ACO, under specific circumstances, acts as rate-limiting enzyme production. Under normal developmental processes, ACO collaborate maintain balanced production, ensuring proper growth physiology. However, abiotic stress conditions, such drought, salinity, extreme temperatures, or pathogen attack, regulation of becomes for plants’ survival. This review highlights structural characteristics, examines transcriptional, post-transcriptional, post-translational their role conditions. Reviews on signaling adaptation are available. a delineates acclimation not

Language: Английский

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Nitric oxide in co-ordination with nitrogen reverses cadmium-inhibited photosynthetic activity by interacting with ethylene synthesis, strengthening the antioxidant system, and nitrogen and sulfur assimilation in mustard (Brassica juncea L.)

Scientia Horticulturae, Journal Year: 2023, Volume and Issue: 314, P. 111958 - 111958

Published: March 4, 2023

Language: Английский

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Crosstalk of melatonin with major phytohormones and growth regulators in mediating abiotic stress tolerance in plants

South African Journal of Botany, Journal Year: 2023, Volume and Issue: 163, P. 201 - 216

Published: Oct. 29, 2023

Language: Английский

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Elucidating the modulatory effect of melatonin on enzyme activity and oxidative stress in wheat: a global meta‐analysis

Physiologia Plantarum, Journal Year: 2024, Volume and Issue: 176(2)

Published: March 1, 2024

Abstract In our comprehensive meta‐analysis, we initially collected 177 publications focusing on the impact of melatonin wheat. After meticulous screening, 40 published studies were selected, encompassing 558 observations for antioxidant enzymes, 312 reactive oxygen species (ROS), and 92 soluble biomolecules (soluble sugar protein). This analysis revealed significant heterogeneity across (I 2 > 99% ROS, biomolecules) notable publication bias, indicating complexity variability in research field. Melatonin application generally increased enzyme activities [superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), ascorbate (APX)] wheat, particularly under stress conditions, such as high temperature heavy‐metal exposure. Compared to control, SOD, POD, CAT, APX by 29.5, 16.96, 35.98, 171.64%, respectively. Moreover, oxidative markers like hydrogen peroxide (H O ), superoxide anion (O malondialdehyde (MDA) decreased with 23.73, 13.64, 21.91%, respectively, suggesting a reduction stress. The also highlighted melatonin's role improving carbohydrate metabolism defenses. showed an overall increase 12.77% content, 22.76% glutathione (GPX) activity compared control. However, effects varied different wheat varieties, environmental methods. Our study uncovered complex relationships between H levels, nuanced regulatory responses. meta‐analysis demonstrates increasing resilience abiotic stressors, potentially through its defense systems response.

Language: Английский

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