Phytohormones Regulate Accumulation of Osmolytes Under Abiotic Stress

Biomolecules, Год журнала: 2019, Номер 9(7), С. 285 - 285

Опубликована: Июль 17, 2019

Plants face a variety of abiotic stresses, which generate reactive oxygen species (ROS), and ultimately obstruct normal growth development plants. To prevent cellular damage caused by oxidative stress, plants accumulate certain compatible solutes known as osmolytes to safeguard the machinery. The most common that play crucial role in osmoregulation are proline, glycine-betaine, polyamines, sugars. These compounds stabilize osmotic differences between surroundings cell cytosol. Besides, they also protect plant cells from stress inhibiting production harmful ROS like hydroxyl ions, superoxide hydrogen peroxide, other free radicals. accumulation is further modulated phytohormones abscisic acid, brassinosteroids, cytokinins, ethylene, jasmonates, salicylic acid. It thus important understand mechanisms regulating phytohormone-mediated during stresses. In this review, we have discussed underlying phytohormone-regulated osmolyte along with their various functions under conditions.

Язык: Английский

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Drought and Salinity Stress Responses and Microbe-Induced Tolerance in Plants

Frontiers in Plant Science, Год журнала: 2020, Номер 11

Опубликована: Ноя. 13, 2020

Drought and salinity are among the most important environmental factors that hampered agricultural productivity worldwide. Both stresses can induce several morphological, physiological, biochemical, metabolic alterations through various mechanisms, eventually influencing plant growth, development, productivity. The responses of plants to these stress conditions highly complex depend on other factors, such as species genotype, age size, rate progression well intensity duration stresses. These have a strong effect response define whether mitigation processes related acclimation will occur or not. In this review, we summarize how drought extensively affect growth in agriculture ecosystems. particular, focus Moreover, discuss mechanisms underlying plant-microbe interactions confer abiotic tolerance.

Язык: Английский

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The Role of Polyphenols in Abiotic Stress Response: The Influence of Molecular Structure

Plants, Год журнала: 2021, Номер 10(1), С. 118 - 118

Опубликована: Янв. 8, 2021

Abiotic stressors such as extreme temperatures, drought, flood, light, salt, and heavy metals alter biological diversity crop production worldwide. Therefore, it is important to know the mechanisms by which plants cope with stress conditions. Polyphenols, are largest group of plant-specialized metabolites, generally recognized molecules involved in protection plants. This diverse metabolites contains various structures, from simple forms consisting one aromatic ring more complex ones large number polymerized molecules. Consequently, all these molecules, depending on their structure, may show different roles plant growth, development, protection. In present review, we aimed summarize data how polyphenol structures influence activity abiotic responses. We focused our review phenolic acids, flavonoids, stilbenoids, lignans.

Язык: Английский

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The Impact of Drought in Plant Metabolism: How to Exploit Tolerance Mechanisms to Increase Crop Production

Applied Sciences, Год журнала: 2020, Номер 10(16), С. 5692 - 5692

Опубликована: Авг. 17, 2020

Plants are often exposed to unfavorable environmental conditions, for instance abiotic stresses, which dramatically alter distribution of plant species among ecological niches and limit the yields crop species. Among these, drought stress is one most impacting factors seriously physiology, finally leading decline productivity. Drought causes in plants a set morpho-anatomical, physiological biochemical changes, mainly addressed loss water by transpiration with attempt increase use efficiency. The stomata closure, first consistent reactions observed under drought, results series consequent physiological/biochemical adjustments aimed at balancing photosynthetic process as well enhancing defense barriers against drought-promoted (e.g., stimulation antioxidant systems, accumulation osmolytes aquaporin synthesis), all representing an overcome period limited availability. In view severe changes availability imposed climate change considering increasing human population, it therefore outmost importance highlight: (i) how react drought; (ii) mechanisms tolerance exhibited some species/cultivars; (iii) techniques All these aspects necessary respond continuously demand food, unfortunately parallels arable land due rainfall dynamics prolonged provoked factors. This review summarizes updated findings on impact morphological, features highlights could be exploited capability survive addition, possible applicative strategies help counteracting periods also discussed.

Язык: Английский

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Chromium Bioaccumulation and Its Impacts on Plants: An Overview

Plants, Год журнала: 2020, Номер 9(1), С. 100 - 100

Опубликована: Янв. 13, 2020

Chromium (Cr) is an element naturally occurring in rocky soils and volcanic dust. It has been classified as a carcinogen agent according to the International Agency for Research on Cancer. Therefore, this metal needs accurate understanding thorough investigation soil-plant systems. Due its high solubility, Cr (VI) regarded hazardous ion, which contaminates groundwater can be transferred through food chain. also negatively impacts growth of plants by impairing their essential metabolic processes. The toxic effects are correlated with generation reactive oxygen species (ROS), cause oxidative stress plants. current review summarizes toxicity via discussing possible mechanisms involved uptake, translocation sub-cellular distribution, along interference other plant processes such chlorophyll biosynthesis, photosynthesis defensive system.

Язык: Английский

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Melatonin regulates the functional components of photosynthesis, antioxidant system, gene expression, and metabolic pathways to induce drought resistance in grafted Carya cathayensis plants

The Science of The Total Environment, Год журнала: 2020, Номер 713, С. 136675 - 136675

Опубликована: Янв. 13, 2020

Язык: Английский

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Plant secondary metabolites synthesis and their regulations under biotic and abiotic constraints

Journal of Plant Biology, Год журнала: 2020, Номер 63(3), С. 203 - 216

Опубликована: Апрель 8, 2020

Язык: Английский

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Polyphenols, Flavonoids, and Antioxidant Activity Involved in Salt Tolerance in Wheat, Aegilops cylindrica and Their Amphidiploids

Frontiers in Plant Science, Год журнала: 2021, Номер 12

Опубликована: Март 25, 2021

Aegilops spp. is the closest genus to wheat ( Triticum spp.), which makes great candidates exhibit precursors of features. cylindrica Host displays excellent salt tolerance. In current study, biochemical and phytochemical compounds in leaves two cultivars, one hyper-salt tolerant Ae. genotype their amphidiploids (derived from “Chinese Spring” × cilindrica “Roshan” ), grown under control saline field conditions, were assessed. These included total protein content, proline electrolyte leakage, flavonoid phenolic DPPH radical scavenging activity, reducing power. addition, components also identified using HPLC analysis. Chlorogenic acid, ellagic ferulic syringic vanillic p-coumaric caffeic gallic acid most abundant acids. Luteolin, apigenin, rutin flavonoids leaves. Salt stress significantly increased all variables, with exceptions power acid. Interestingly, amphidiploid genotypes exhibited intermediate levels detected between parental species. As demonstrated by bivariate correlations luteolin, chlorogenic apigenin could predict inhibition percentage assay, suggesting a possible role cellular defense against oxidative wheat. The wild parent performed better than cultivars on constituents, flavonoids, maintaining redox homeostasis conditions.

Язык: Английский

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Secondary metabolites in the drought stress tolerance of crop plants: A review

Gene Reports, Год журнала: 2021, Номер 23, С. 101040 - 101040

Опубликована: Фев. 17, 2021

Язык: Английский

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The Multifunctional Roles of Polyphenols in Plant-Herbivore Interactions

International Journal of Molecular Sciences, Год журнала: 2021, Номер 22(3), С. 1442 - 1442

Опубликована: Фев. 1, 2021

There is no argument to the fact that insect herbivores cause significant losses plant productivity in both natural and agricultural ecosystems. To counter this continuous onslaught, plants have evolved a suite of direct indirect, constitutive induced, chemical physical defenses, secondary metabolites are key group facilitates these defenses. Polyphenols-widely distributed flowering plants-are major such biologically active metabolites. Recent advances analytical chemistry metabolomics provided an opportunity dig deep into extraction quantification plant-based products with insecticidal/insect deterrent activity, potential sustainable pest management strategy. However, we currently lack updated review their multifunctional roles insect-plant interactions, especially focusing on or antifeedant properties. This focuses role polyphenols plant-insect interactions defenses including structure, induction, regulation, anti-feeding toxicity effects. Details mechanisms underlying localization compounds discussed context current findings, avenues for future research area.

Язык: Английский

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