Reactive Oxygen Species and Antioxidant Defense in Plants under Abiotic Stress: Revisiting the Crucial Role of a Universal Defense Regulator

Antioxidants, Год журнала: 2020, Номер 9(8), С. 681 - 681

Опубликована: Июль 29, 2020

Global climate change and associated adverse abiotic stress conditions, such as drought, salinity, heavy metals, waterlogging, extreme temperatures, oxygen deprivation, etc., greatly influence plant growth development, ultimately affecting crop yield quality, well agricultural sustainability in general. Plant cells produce radicals their derivatives, so-called reactive species (ROS), during various processes with stress. Moreover, the generation of ROS is a fundamental process higher plants employs to transmit cellular signaling information response changing environmental conditions. One most crucial consequences disturbance equilibrium between antioxidant defense systems triggering excessive accumulation inducing oxidative plants. Notably, detoxification maintained by both enzymatic nonenzymatic under harsh stresses. Although this field research has attracted massive interest, it largely remains unexplored, our understanding poorly understood. In review, we have documented recent advancement illustrating harmful effects ROS, system involved different stresses, molecular cross-talk other important signal molecules nitrogen, sulfur, carbonyl species. addition, state-of-the-art approaches ROS-mediated improvement acclimation against stresses also been discussed.

Язык: Английский

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Regulation of Reactive Oxygen Species and Antioxidant Defense in Plants under Salinity

International Journal of Molecular Sciences, Год журнала: 2021, Номер 22(17), С. 9326 - 9326

Опубликована: Авг. 28, 2021

The generation of oxygen radicals and their derivatives, known as reactive species, (ROS) is a part the signaling process in higher plants at lower concentrations, but those ROS cause oxidative stress. Salinity-induced osmotic stress ionic trigger overproduction and, ultimately, result damage to cell organelles membrane components, severe levels, they plant death. antioxidant defense system protects from salt-induced by detoxifying also maintaining balance under salt Different hormones genes are associated with protect when exposed Salt-induced overgeneration one major reasons for hampering morpho-physiological biochemical activities which can be largely restored through enhancing that detoxifies ROS. In this review, we discuss ROS, salinity.

Язык: Английский

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Developing climate‐resilient crops: improving plant tolerance to stress combination

The Plant Journal, Год журнала: 2021, Номер 109(2), С. 373 - 389

Опубликована: Сен. 5, 2021

SUMMARY Global warming and climate change are driving an alarming increase in the frequency intensity of different abiotic stresses, such as droughts, heat waves, cold snaps, flooding, negatively affecting crop yields causing food shortages. Climate is also altering composition behavior insect pathogen populations adding to yield losses worldwide. Additional constraints agriculture caused by increasing amounts human‐generated pollutants, well negative impact on soil microbiomes. Although laboratory, we trained study individual stress conditions plants, field many pests could simultaneously or sequentially affect combination. Because expected combination events (e.g., waves combined with drought, other and/or pathogens), a concentrated effort needed how crops. This need particularly critical, studies have shown that response plants unique cannot be predicted from simply studying each stresses part Strategies enhance tolerance particular may therefore fail this specific stress, when factors. Here review recent combinations propose new approaches avenues for development combination‐ change‐resilient

Язык: Английский

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Regulation of ROS Metabolism in Plants under Environmental Stress: A Review of Recent Experimental Evidence

International Journal of Molecular Sciences, Год журнала: 2020, Номер 21(22), С. 8695 - 8695

Опубликована: Ноя. 18, 2020

Various environmental stresses singly or in combination generate excess amounts of reactive oxygen species (ROS), leading to oxidative stress and impaired redox homeostasis. Generation ROS is the obvious outcome abiotic gaining importance not only for their ubiquitous generation subsequent damaging effects plants but also diversified roles signaling cascade, affecting other biomolecules, hormones concerning growth, development, regulation tolerance. Therefore, a good balance between antioxidant defense system protects photosynthetic machinery, maintains membrane integrity, prevents damage nucleic acids proteins. Notably, scavenges regulates titer signaling. A glut studies have been executed over last few decades discover pattern scavenging. Reports suggested sharp threshold level being beneficial toxic, depending on plant species, growth stages, types stresses, intensity, duration. Approaches towards enhancing one vital areas research biologists. this review, we accumulated discussed physicochemical basis production, cellular compartment-specific pathways, possible distressing effects. Moreover, function detoxification homeostasis maximizing light latest endeavors experimental evidence.

Язык: Английский

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Reactive Oxygen Species in Plants: From Source to Sink

Antioxidants, Год журнала: 2022, Номер 11(2), С. 225 - 225

Опубликована: Янв. 25, 2022

Reactive oxygen species (ROS, partial reduction or derivatives of free radicals) are highly reactive, dangerous and can cause oxidative cell death. In addition to their role as toxic by-products aerobic metabolism, ROS play a in the control regulation biological processes such growth, cycle, programmed death, hormone signaling, biotic abiotic stress reactions development. always arise plants by-product several metabolic that located different compartments, result inevitable escape electrons from electron transport activities chloroplasts, mitochondria plasma membranes. These reactive formed mitochondria, membranes, peroxisomes, apoplasts, endoplasmic reticulum walls. The action many non-enzymatic enzymatic antioxidants present tissues is required for efficient scavenging generated during various environmental stressors. current review provides an in-depth look at fate plants, beneficial managing other irregularities. production sites also explained with negative effects. addition, biochemical properties sources generation, capture systems, influence on biochemistry crosstalk signaling molecules/pathways discussed.

Язык: Английский

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Abiotic stress‐induced anthocyanins in plants: Their role in tolerance to abiotic stresses

Physiologia Plantarum, Год журнала: 2021, Номер 172(3), С. 1711 - 1723

Опубликована: Фев. 19, 2021

Abstract Abiotic stresses, such as heat, drought, salinity, low temperature, and heavy metals, inhibit plant growth reduce crop productivity. stresses are becoming increasingly extreme worldwide due to the ongoing deterioration of global climate increase in agrochemical utilization industrialization. Plants grown fields affected by one or more abiotic stresses. The consequent stress response plants induces reactive oxygen species (ROS), which then used signaling molecules activate stress‐tolerance mechanism. However, under conditions, ROS overproduced cause oxidative damage plants. In produce anthocyanins after via transcription anthocyanin biosynthesis genes. These utilized antioxidant activities scavenging excess for their sustainability. this review, we discuss physiological, biochemical, molecular mechanisms underlying stress‐induced role tolerance. addition, highlight current progress development anthocyanin‐enriched transgenic ability Overall, review provides valuable information that increases our understanding respond protect against it. This also practical guidance biologists who engineering stress‐tolerant crops using regulatory

Язык: Английский

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Mitogen-Activated Protein Kinase Cascades in Plant Hormone Signaling

Frontiers in Plant Science, Год журнала: 2018, Номер 9

Опубликована: Окт. 8, 2018

Mitogen-activated protein kinase (MAPK) modules play key roles in the transduction of environmental and developmental signals through phosphorylation downstream signaling targets, including other kinases, enzymes, cytoskeletal proteins or transcription factors, all eukaryotic cells. A typical MAPK cascade consists at least three sequentially acting serine/threonine a MAP (MAPKKK), (MAPKK) finally, itself, with each phosphorylating, hence activating, next cascade. Recent advances our understanding hormone pathways have led to discovery new regulatory systems. In particular, this research has revealed emerging role crosstalk between components various involvement multiple cellular processes. Here we provide an overview current models mechanisms special emphasis on MAPKs cell networks.

Язык: Английский

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Mechanisms Regulating the Dynamics of Photosynthesis Under Abiotic Stresses

Frontiers in Plant Science, Год журнала: 2021, Номер 11

Опубликована: Янв. 28, 2021

Photosynthesis sustains plant life on earth and is indispensable for growth development. Factors such as unfavorable environmental conditions, stress regulatory networks, biochemical processes limits the photosynthetic efficiency of plants thereby threaten food security worldwide. Although numerous physiological approaches have been used to assess performance key components their responses, though, these are not extensive enough do favor strategic improvement photosynthesis under abiotic stresses. The decline in capacity due stresses directly associated with reduction yield. Therefore, a detailed information responses better understanding machinery could help developing new crop higher yield even stressed environments. Interestingly, cracking signaling metabolic pathways, identification some elements, characterization potential genes, phytohormone factors advanced our knowledge related photosynthesis. However, dynamic modulation dramatically fluctuating natural environments remains limited. Here, we provide overview research conducted date, highlight (heat, salinity, drought, high light, heavy metal) that limit machinery. Further, reviewed role transcription factor genes various enzymes involved process Finally, discussed recent progress field biodegradable compounds, chitosan humic acid, effect melatonin (bio-stimulant) activity. Based gathered researched data set, logical concept regulation along strategies will expand surely accelerate development tolerance mechanisms, wider adaptability, survival rate, species.

Язык: Английский

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Impact of drought and heat stress individually and in combination on physio-biochemical parameters, antioxidant responses, and gene expression in Solanum lycopersicum

3 Biotech, Год журнала: 2020, Номер 10(5)

Опубликована: Апрель 23, 2020

Язык: Английский

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Coupling of abiotic stresses and phytohormones for the production of lipids and high-value by-products by microalgae: A review

Bioresource Technology, Год журнала: 2018, Номер 274, С. 549 - 556

Опубликована: Дек. 10, 2018

Язык: Английский

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