Inactivating transcription factorOsWRKY5enhances drought tolerance through abscisic acid signaling pathways

PLANT PHYSIOLOGY, Год журнала: 2021, Номер 188(4), С. 1900 - 1916

Опубликована: Окт. 22, 2021

During crop cultivation, water-deficit conditions retard growth, thus reducing productivity. Therefore, uncovering the mechanisms behind drought tolerance is a critical task for improvement. Here, we show that rice (Oryza sativa) WRKY transcription factor OsWRKY5 negatively regulates tolerance. We determined was mainly expressed in developing leaves at seedling and heading stages, its expression reduced by stress treatment with NaCl, mannitol, abscisic acid (ABA). Notably, genome-edited loss-of-function alleles oswrky5-2 oswrky5-3 conferred enhanced tolerance, measured as plant growth under conditions. Conversely, overexpression of activation-tagged line oswrky5-D resulted higher susceptibility same The loss activity increased sensitivity to ABA, promoting ABA-dependent stomatal closure. Transcriptome deep sequencing reverse quantitative polymerase chain reaction analyses demonstrated abiotic stress-related genes including MYB2 (OsMYB2) upregulated oswrky5 knockout mutants downregulated mutants. Moreover, dual-luciferase, yeast one-hybrid, chromatin immunoprecipitation assays showed directly binds W-box sequences promoter region OsMYB2 represses expression, downregulating downstream ABA signaling pathways. Our results demonstrate functions negative regulator ABA-induced strongly suggesting inactivation or manipulation key targets could be useful improve cultivars.

Язык: Английский

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Nitric oxide and hydrogen sulfide: an indispensable combination for plant functioning

Trends in Plant Science, Год журнала: 2021, Номер 26(12), С. 1270 - 1285

Опубликована: Авг. 18, 2021

Язык: Английский

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Inter‐tissue and inter‐organ signaling in drought stress response and phenotyping of drought tolerance

The Plant Journal, Год журнала: 2021, Номер 109(2), С. 342 - 358

Опубликована: Дек. 4, 2021

SUMMARY Plant response to drought stress includes systems for intracellular regulation of gene expression and signaling, as well inter‐tissue inter‐organ which helps entire plants acquire resistance. Plants sense water‐deficit conditions both via the stomata leaves roots, transfer signals from roots shoots signaling. Abscisic acid is an important phytohormone involved in adaptation, synthesized mainly vascular tissues guard cells leaves. In leaves, stress‐induced abscisic distributed various by transporters, activates stomatal closure stress‐related genes Moreover, stepwise at whole‐plant level proper understanding physiological conditions. Drought sensed multiple types sensors molecular patterns abiotic signals, are transmitted separate parallel signaling networks induce downstream responses, including synthesis proteins metabolites. Peptide molecules play roles dehydration shoots, osmotic changes reactive oxygen species/Ca 2+ . this review, we have summarized recent advances research on complex plant focusing shoots. We discussed mechanisms adaptations resistance acquired level, proposed importance quantitative phenotyping measuring growth under

Язык: Английский

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Abscisic acid signaling and crosstalk with phytohormones in regulation of environmental stress responses

Environmental and Experimental Botany, Год журнала: 2022, Номер 199, С. 104885 - 104885

Опубликована: Апрель 22, 2022

Язык: Английский

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A Review on the Role of Endophytes and Plant Growth Promoting Rhizobacteria in Mitigating Heat Stress in Plants

Microorganisms, Год журнала: 2022, Номер 10(7), С. 1286 - 1286

Опубликована: Июнь 24, 2022

Among abiotic stresses, heat stress is described as one of the major limiting factors crop growth worldwide, high temperatures elicit a series physiological, molecular, and biochemical cascade events that ultimately result in reduced yield. There growing interest among researchers use beneficial microorganisms. Intricate highly complex interactions between plants microbes alleviation stress. Plant–microbe are mediated by production phytohormones, siderophores, gene expression, osmolytes, volatile compounds plants. Their interaction improves antioxidant activity accumulation compatible osmolytes such proline, glycine betaine, soluble sugar, trehalose, enriches nutrient status stressed Therefore, this review aims to discuss response understand mechanisms microbe-mediated on physio-molecular basis. This indicates have great potential enhance protection from plant Owing metabolic diversity microorganisms, they can be useful mitigating In regard, microorganisms do not present new threats ecological systems. Overall, it expected continued research tolerance will enable technology used an ecofriendly tool for sustainable agronomy.

Язык: Английский

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Fertilizers for food and nutrition security in sub-Saharan Africa: An overview of soil health implications

Frontiers in Soil Science, Год журнала: 2023, Номер 3

Опубликована: Март 16, 2023

Sub-Saharan Africa (SSA) faces chronic food insecurity associated with soil degradation and the peculiar aftermath of climate change exacerbated by rising population historically poor agricultural practices. Notably, use mineral fertilizers has potential to counteract in SSA; it drives an increased production required feed while sustaining quality health soils. However, limited financial resources deprive SSA promise fertilizers, wherein application rates are low, regimes characterized unbalanced nutrient composition fertilizer quality. Although current global is generally low efficiency, most affected due already usage available products. About 70% fertilizer-nitrogen lost through unregulated transformation ammonia, nitrous oxide, nitrate that either volatilized or emitted into atmosphere leached water bodies. Similarly, preponderance fertilizer-phosphorus via run-off leaching, unavailing plants overloading streams rivers and, together nitrate, causing eutrophication. These environmental problems accentuated where quantity issues a limiting factor. recent advances happening outside indicate nutrients, when strategically formulated, such as nano packaging, (bio)polymer encapsulation, tunable respond cues, can provide multiple outcomes, particularly, healthy soils higher productivity. Therefore, presumably, proper synthesis gamut properties influencing plant release availability, options for exposure uptake critical realizing these benefits SSA. Despite possibilities, there lack deeper context on fertilizer-related they affect nutrition security This paper provides overview fertilizer-nutrient agronomic, challenges opportunities, which though not exclusive per se, be reasoned peculiarity region. impetus increase improve health, sustainable crop production,

Язык: Английский

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Unlocking nature's stress buster: Abscisic acid's crucial role in defending plants against abiotic stress

Plant Stress, Год журнала: 2024, Номер 11, С. 100359 - 100359

Опубликована: Янв. 21, 2024

The main obstacle for sustained supply of agricultural products and feeding the globe in coming years is abiotic stress. Plants typically shorten their developmental processes under stress, which eventually has a negative impact on production. A key phytohormone that plays crucial role combating stress abscisic acid (ABA). ABA significant absorbing signals guiding subsequent responses. For an outcome, plants must consistently control levels response to shifting environmental factors. In addition helping adapt diverse conditions like drought, salt, temperature also controls number physiological functions, including stomatal opening protein synthesis. variety defense mechanisms against are regulated by ABA, produced various organs stressful situations. These include controlling aperture expression genes confer resistance stresses. Based current available literatures, this review provides insights ABA's function context stresses, with focus its synthesis, signaling pathways, regulatory root architecture, over movement, intricate interactions other phytohormones.

Язык: Английский

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Unraveling the role of nanoparticles in improving plant resilience under environmental stress condition

Plant and Soil, Год журнала: 2024, Номер 503(1-2), С. 313 - 330

Опубликована: Март 12, 2024

Abstract Background As the world grapples with increasing agricultural demands and unpredictable environmental stressors, there is a pressing need to improve plant resilience. Therefore, understanding pioneering role of nanoparticles in alleviating stress crucial for developing stress-resilient varieties enhance food secure world. Nanoparticles have unique physical chemical properties, demonstrate their potential growth, nutrient utilization, tolerance. This review delves into mechanistic insights nanoparticle-plant interactions, highlighting how these tiny particles can mitigate diverse stressors such as drought, salinity, heavy metal toxicity. The action different types nanoparticles, including metal, carbon-based, biogenic are discussed context interaction physiology responses. Aims article also explores drawbacks implications nanoparticle use, emphasizing responsible sustainable applications. this study aimed offer exciting possibilities managing both biotic abiotic species, from improving water-use efficiency resilience via nanotechnology. Conclusions Future research directions suggested, focusing on nano-bioengineering precision agriculture create crops security. Through lens interdisciplinary research, paper underscores significance innovative tools realm agriculture, catalyzing paradigm shift towards farming systems.

Язык: Английский

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The role of endophytes to combat abiotic stress in plants

Plant Stress, Год журнала: 2024, Номер 12, С. 100435 - 100435

Опубликована: Март 15, 2024

Climatic changes and global warming produce abiotic stressors that affect plant development productivity. Abiotic stressors, such as drought, salt, cold, heat, significantly impair agricultural crop yields. The endophyte is a type of endosymbiont, usually bacteria or fungus lives inside cells doesn't cause disease in the host plant. This review scrutinizes integral contribution endophytes to augmenting stress tolerance plants. core analysis investigates regulatory role mechanism pivotal physiological aspects plants under conditions. includes their involvement managing water uptake maintaining balance during drought salinity stress, regulating osmotic scavenging reactive oxygen species (ROS). Additionally, explores outlines diverse strategies for inoculating applying enhance Endophytes secondary active compounds defend from diseases extracellular enzymes help colonize hosts. Microbial may thrive poor soil conditions through phytohormone production hazardous chemical degradation. use many processes survive nutritional deficiency, heavy metal temperature. These findings suggest rhizobacteria cope with stress. Still, more research needed understand mechanisms side effects maximize sustainable climate-smart agriculture.

Язык: Английский

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Halotolerant plant growth-promoting rhizobacteria improve soil fertility and plant salinity tolerance for sustainable agriculture—A review

Plant Stress, Год журнала: 2024, Номер 12, С. 100482 - 100482

Опубликована: Май 14, 2024

Due to climate change, expansion of salt-affected arable lands has emerged as a major threat global food security and agricultural sustainability. Conventional crop breeding programs have proven insufficient for mitigating the risks salt stress in soil productivity. Research on improving health tolerance boost yield performance under by plant-associated microbiomes gained considerable attention over past few decades. In addition rehabilitation salt-degraded soils, halotolerant plant growth-promoting rhizobacteria (HT-PGPR) are effective stimulating growth, nutritional values yields, increasing tolerance/resistance abiotic/biotic conditions plants. To alleviate salinity stress, HT-PGPR employ wide range mechanisms, including production secondary metabolites siderophores, synthesis phytohormones enzymes, maintenance ion homeostasis, nutrient availability Because our goal is continuously improve understanding their impact agriculture, current review addresses challenges associated with salinity, updates scientific community solutions (e.g., HT-PGPR) sustainable agriculture farming practices.

Язык: Английский

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