ROS Homeostasis in Abiotic Stress Tolerance in Plants

International Journal of Molecular Sciences, Journal Year: 2020, Volume and Issue: 21(15), P. 5208 - 5208

Published: July 23, 2020

Climate change-induced abiotic stress results in crop yield and production losses. These stresses result changes at the physiological molecular level that affect development growth of plant. Reactive oxygen species (ROS) is formed high levels due to within different organelles, leading cellular damage. Plants have evolved mechanisms control scavenging ROS through enzymatic non-enzymatic antioxidative processes. However, has a dual function where, levels, they are toxic cells while same molecule can as signal transducer activates local systemic plant defense response against stress. The effects, perception, signaling, activation their responses elaborated this review. This review aims provide purview processes involved homeostasis plants identify genes triggered abiotic-induced oxidative articulates importance these pathways understanding mechanism resistance information breeding genetically developing crops for plants.

Language: Английский

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Crosstalk between phytohormones and secondary metabolites in the drought stress tolerance of crop plants: A review

Physiologia Plantarum, Journal Year: 2021, Volume and Issue: 172(2), P. 1106 - 1132

Published: Jan. 14, 2021

Drought stress negatively affects crop performance and weakens global food security. It triggers the activation of downstream pathways, mainly through phytohormones homeostasis their signaling networks, which further initiate biosynthesis secondary metabolites (SMs). Roots sense drought stress, signal travels to above-ground tissues induce systemic signaling. The signals trigger SMs stomatal closure prevent water loss. primarily scavenge reactive oxygen species (ROS) protect plants from lipid peroxidation also perform additional defense-related functions. Moreover, drought-induced volatile can alert plant mitigating functions in plants. Other phytohormone-induced responses include cell wall cuticle thickening, root leaf morphology alteration, anatomical changes roots, stems, leaves, turn minimize oxidative loss, other adverse effects drought. Exogenous applications genetic engineering pathways mitigate effects. Direct modulation biosynthetic pathway genes or indirect via phytohormones' regulation provides tolerance. Thus, play key roles development under environment

Language: Английский

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Transcription factors as key molecular target to strengthen the drought stress tolerance in plants

Physiologia Plantarum, Journal Year: 2020, Volume and Issue: 172(2), P. 847 - 868

Published: Nov. 12, 2020

Abstract Amid apprehension of global climate change, crop plants are inevitably confronted with a myriad abiotic stress factors during their growth that inflicts serious threat to development and overall productivity. These stresses comprise extreme temperature, pH, high saline soil, drought stress. Among different stresses, is considered the most calamitous stressor its impact on crops' yield stability. The climate‐resilient crops withstands reduced water availability major focus scientific fraternity ensure food security sharply increasing population. Numerous studies aim recognize key regulators molecular biochemical processes associated tolerance response. A few potential candidates now as promising targets for improvement. Transcription act regulatory switch controlling gene expression diverse biological and, eventually, metabolic processes. Understanding role regulation transcription will facilitate improvement strategies intending develop deliver agronomically‐superior crops. Therefore, in this review, we have emphasized avenues can be exploited engineer plants. We discussed several factors, such basic leucine zipper (bZIP), dehydration responsive element binding (DREB), DNA one finger (DOF), heat shock factor (HSF), MYB, NAC, TEOSINTE BRANCHED1/CYCLOIDEA/PCF (TCP), WRKY. also highlighted candidate used drought‐tolerant

Language: Английский

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Revisiting the Role of Plant Transcription Factors in the Battle against Abiotic Stress

International Journal of Molecular Sciences, Journal Year: 2018, Volume and Issue: 19(6), P. 1634 - 1634

Published: May 31, 2018

Owing to diverse abiotic stresses and global climate deterioration, the agricultural production worldwide is suffering serious losses. Breeding stress-resilient crops with higher quality yield against multiple environmental via application of transgenic technologies currently most promising approach. Deciphering molecular principles mining stress-associate genes that govern plant responses one prerequisites develop stress-resistant crop varieties. As switches in controlling stress-responsive expression, transcription factors (TFs) play crucial roles regulating various stress responses. Hence, functional analysis TFs their interaction partners during perceive role signaling cascades many researchers have continued undertake. Here, we review current developments understanding TFs, particular emphasis on functions orchestrating Further, discuss novel mechanisms action under conditions. This will provide valuable information for regulatory engineer stress-tolerant crops.

Language: Английский

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Rice NAC transcription factor ONAC066 functions as a positive regulator of drought and oxidative stress response

BMC Plant Biology, Journal Year: 2019, Volume and Issue: 19(1)

Published: June 25, 2019

NAC (NAM, ATAF and CUC) transcriptional factors constitute a large family with more than 150 members in rice several of this have been demonstrated to play crucial roles abiotic stress response. In the present study, we report function novel stress-responsive gene, ONAC066, drought oxidative tolerance. ONAC066 was localized nuclei cells when transiently expressed Nicotiana benthamiana is transcription activator binding ability recognition sequence (NACRS) AtJUB1 site (JBS). Expression significantly induced by PEG, NaCl, H2O2 abscisic acid (ABA). Overexpression transgenic improved tolerance increased ABA sensitivity, accompanied decreased rate water loss, contents proline soluble sugars, accumulation reactive oxygen species (ROS) upregulated expression stress-related genes under condition. By contrast, RNAi-mediated suppression attenuated elevated ROS downregulated Furthermore, yeast one hybrid chromatin immunoprecipitation-PCR analyses revealed that bound directly JBS-like cis-elements OsDREB2A promoter activated OsDREB2A. nucleus-localized can respond multiple factors. Functional using overexpression lines demonstrate positive regulator rice.

Language: Английский

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Physiology of Plant Responses to Water Stress and Related Genes: A Review

Forests, Journal Year: 2022, Volume and Issue: 13(2), P. 324 - 324

Published: Feb. 16, 2022

Drought and waterlogging seriously affect the growth of plants are considered severe constraints on agricultural forestry productivity; their frequency degree have increased over time due to global climate change. The morphology, photosynthetic activity, antioxidant enzyme system hormone levels could change in response water stress. mechanisms these changes introduced this review, along with research key transcription factors genes. Both drought stress similarly impact leaf morphology (such as wilting crimping) inhibit photosynthesis. former affects absorption transportation plants, lack nutrients inhibits formation chlorophyll, which leads reduced capacity. Constitutive overexpression 9-cis-epoxydioxygenase (NCED) acetaldehyde dehydrogenase (ALDH), enzymes abscisic acid (ABA) biosynthesis, increases resistance. latter forces stomata close chemical signals, produced by roots transferred aboveground, affecting capacity CO2, reducing substrates. root produces adventitious forms aerenchymal adapt stresses. Ethylene (ETH) is main stress, a member ERFVII subfamily, includes involved hypoxia-induced gene expression, responds energy expenditure through anaerobic respiration. There two potential adaptation (“static” or “escape”) ETH-mediated gibberellin (GA) dynamic equilibrium present studies. Plant signal transduction pathways, after receiving stimulus signals well regulatory mechanism subsequent synthesis pyruvate decarboxylase (PDC) alcohol (ADH) produce ethanol under hypoxic environment caused waterlogging, should be considered. This review provides theoretical basis for improve tolerance water-resistant breeding.

Language: Английский

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NACs, generalist in plant life

Plant Biotechnology Journal, Journal Year: 2023, Volume and Issue: 21(12), P. 2433 - 2457

Published: Aug. 25, 2023

Plant-specific NAC proteins constitute a major transcription factor family that is well-known for its roles in plant growth, development, and responses to abiotic biotic stresses. In recent years, there has been significant progress understanding the functions of proteins. have highly conserved DNA-binding domain; however, their are diverse. Previous structure factors can be used as basis functional diversity. consist target-binding domain at N-terminus versatile C-terminal interacts with other A growing body research on helps us comprehend intricate signalling network transcriptional reprogramming facilitated by NAC-mediated complexes. However, most studies limited single function. Here, we discuss upstream regulators, regulatory components targets context prospective improvement strategies via biotechnology intervention, highlighting importance plants need further research.

Language: Английский

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Genomics, Proteomics, and Metabolomics Approaches to Improve Abiotic Stress Tolerance in Tomato Plant

International Journal of Molecular Sciences, Journal Year: 2023, Volume and Issue: 24(3), P. 3025 - 3025

Published: Feb. 3, 2023

To explore changes in proteins and metabolites under stress circumstances, genomics, proteomics, metabolomics methods are used. In-depth research over the previous ten years has gradually revealed fundamental processes of plants’ responses to environmental stress. Abiotic stresses, which include temperature extremes, water scarcity, metal toxicity brought on by human activity urbanization, a major cause for concern, since they can result unsustainable warming trends drastically lower crop yields. Furthermore, there is an emerging reliance agrochemicals. Stress responsible physiological transformations such as formation reactive oxygen, stomatal opening closure, cytosolic calcium ion concentrations, metabolite profiles their dynamic changes, expression stress-responsive genes, activation potassium channels, etc. Research regarding abiotic stresses lacking because defense feedbacks factors necessitate regulating that activate multiple genes pathways not properly explored. It clear from involvement these plant response adaptation complicated processes. Targeting multigenicity caused genomic sequences, transcripts, protein organization interactions, stress-specific cellular transcriptome collections, mutant screens be first step integrative approach. Therefore, this review, we focused genomes, tomatoes

Language: Английский

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Advanced Biotechnological Interventions in Mitigating Drought Stress in Plants

Plants, Journal Year: 2024, Volume and Issue: 13(5), P. 717 - 717

Published: March 4, 2024

This comprehensive article critically analyzes the advanced biotechnological strategies to mitigate plant drought stress. It encompasses an in-depth exploration of latest developments in genomics, proteomics, and metabolomics, shedding light on complex molecular mechanisms that plants employ combat The study also emphasizes significant advancements genetic engineering techniques, particularly CRISPR-Cas9 genome editing, which have revolutionized creation drought-resistant crop varieties. Furthermore, explores microbial biotechnology's pivotal role, such as growth-promoting rhizobacteria (PGPR) mycorrhizae, enhancing resilience against conditions. integration these cutting-edge interventions with traditional breeding methods is presented a holistic approach for fortifying crops addresses immediate agricultural needs contributes significantly sustainable agriculture, ensuring food security face escalating climate change challenges.

Language: Английский

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Multiple roles of NAC transcription factors in plant development and stress responses

Journal of Integrative Plant Biology, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 14, 2025

ABSTRACT NAC (NAM, ATAF1/2, and CUC2) transcription factors (TFs) are a family of plant‐specific TFs that play crucial roles in various aspects plant development stress responses. Here, we provide an in‐depth review the structural characteristics, regulatory mechanisms, functional NACs different species. One key features is their ability to regulate gene expression through variety including binding DNA sequences promoter regions target genes, interacting with other TFs, modulating chromatin structure. We discuss these mechanisms detail, providing insights into complex networks govern activity NACs. explore diverse functions growth processes, embryogenesis, seed development, root shoot floral fruit ripening, secondary cell wall formation, senescence. also response stresses, drought, flooding, heat, cold, salinity, nutrient deficit, diseases. Lastly, emphasize crosstalk role between developmental processes This integrated perspective highlights how orchestrate resilience. Overall, this provides comprehensive overview pivotal responses, emphasizing potential for engineering stress‐resistant crops enhancing agricultural productivity.

Language: Английский

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