Salicylic acid (SA)-mediated plant immunity against biotic stresses: An insight on molecular components and signaling mechanism

Plant Stress, Journal Year: 2024, Volume and Issue: 11, P. 100427 - 100427

Published: March 1, 2024

Since the beginning of 21st century, climate change has been pervasive. Such climatic instabilities not only trigger plants' adaptability and survivability in harsh environments, but also sustain spread a broad spectrum pathogens including bacteria, fungi, viruses, that create disease pressure by affecting plant health immune barrier. Salicylic acid (SA) is potent phytohormone signaling molecule plays pivotal roles physio-biochemical processes during development. In addition to its widely known role abiotic stress response, SA vital response biotic stresses through their pathways, molecular interactions, corresponding interactions with other phytohormones like jasmonic acid, ethylene, abscisic etc. this perspective, dictated plethora interacting genes, proteins, transcription factors (TFs). The genes genetic regulators (TFs regulatory proteins) are associated fine-tune activating systemic localized cascade, triggering for pathogenesis-related (PR) phytoalexins, etc., modulate pathogen effectors. way, boosts plant's system acquired resistance (SAR) induced (ISR). addition, gene editing epigenetic regulation SA-responsive valuable innovative tools understand decipher complex SA-involved mechanism future utilities make climate-adaptive plants resistance.

Language: Английский

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A NAC Transcription Factor Represses Putrescine Biosynthesis and Affects Drought Tolerance

PLANT PHYSIOLOGY, Journal Year: 2016, Volume and Issue: 172(3), P. 1532 - 1547

Published: Sept. 23, 2016

Arginine decarboxylase (ADC)-mediated putrescine biosynthesis plays an important role in plant stress responses, but the transcriptional regulation of ADC response to abiotic is not well understood. We isolated a NAM, ATAF1/2, and CUC (NAC) domain-containing transcription factor, PtrNAC72, from trifoliate orange (Poncirus trifoliata) by yeast one-hybrid screening. localized nucleus, binds specifically promoter PtADC acts as repressor. PtrNAC72 expression was induced cold, drought, abscisic acid. messenger RNA abundance levels were decreased transgenic tobacco (Nicotiana nudicaulis) plants overexpressing increased, compared with wild type, Arabidopsis (Arabidopsis thaliana) transfer DNA insertion mutant, nac72 While lines more sensitive mutant exhibited enhanced drought tolerance, consistent accumulation reactive oxygen species tested genotypes. In addition, exogenous application overexpression restored while treatment d-arginine, inhibitor, compromised tolerance Taken together, these results demonstrate that repressor may negatively regulate response, at least part, via modulation putrescine-associated homeostasis.

Language: Английский

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The role of NAC transcription factor in plant cold response

Plant Signaling & Behavior, Journal Year: 2020, Volume and Issue: 15(9), P. 1785668 - 1785668

Published: July 14, 2020

The NAC transcription factor (TF) is one of the largest families TFs in plants and plays an important role plant growth, development, response to environmental stress. structural functional characteristics have been uncovered past years, including sequence binding features DNA-binding domain located N-terminus dynamic interplay between at C-terminus other proteins. Studies on TF are increasing number; these studies distinctly contribute our understanding regulatory networks NAC-mediated complex signaling transcriptional reprogramming. Previous indicated that key regulators stress response. However, for six years so far mainly focused drought salt There relatively few reports about cold signal pathway no related reviews published. In this review article, we summarize TFs, target genes, upstream interaction proteins stress-responsive roles play pathway.

Language: Английский

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Genome-wide analysis of the WRKY gene family in the cucumber genome and transcriptome-wide identification of WRKY transcription factors that respond to biotic and abiotic stresses

BMC Plant Biology, Journal Year: 2020, Volume and Issue: 20(1)

Published: Sept. 25, 2020

Abstract Background Cucumber ( Cucumis sativus L.) is an economically important vegetable crop species. However, it susceptible to various abiotic and biotic stresses. WRKY transcription factors play roles in plant growth development, particularly the response little known about expression pattern of genes under different stresses cucumber. Results In present study, analysis new assembly cucumber genome (v3.0) allowed identification 61 genes. Phylogenetic synteny analyses were performed using related species investigate evolution The CsWRKYs classified into three main groups, within which gene structure motif compositions conserved. Tissue profiles demonstrated that 24 CsWRKY showed constitutive (FPKM > 1 all samples), some organ-specific expression, suggesting these WRKYs might be for organ development Importantly, patterns revealed five strongly responded both salt heat stresses, 12 observed expressed infection from downy mildew powdery mildew, simultaneously treatments analysed. Some induced/repressed at times after or stress treatment, demonstrating during responses their vary Conclusions Sixty-one identified cucumber, insight classification, evolution, was gained this study. Responses also investigated. Our results provide a better understanding function improving resistance

Language: Английский

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Genome-wide identification and expression analysis of the NAC transcription factor family in tomato (Solanum lycopersicum) during aluminum stress

BMC Genomics, Journal Year: 2020, Volume and Issue: 21(1)

Published: April 7, 2020

Abstract Background The family of NAC proteins (NAM, ATAF1/2, and CUC2) represent a class large plant-specific transcription factors. However, identification functional surveys genes tomato ( Solanum lycopersicum ) remain unstudied, despite the genome being decoded for several years. This study aims to identify gene investigate their potential roles in responding Al stress. Results Ninety-three were identified named accordance with chromosome location. Phylogenetic analysis found SlNACs are broadly distributed 5 groups. Gene expression showed that had different levels various tissues at fruit development stages. Cycloheximide treatment qRT-PCR indicated may aid regulation response stress, 19 which significantly up- or down-regulated roots following Conclusion work establishes knowledge base further studies on biological functions will improving agricultural traits future.

Language: Английский

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Overexpression of a Malus baccata NAC Transcription Factor Gene MbNAC25 Increases Cold and Salinity Tolerance in Arabidopsis

International Journal of Molecular Sciences, Journal Year: 2020, Volume and Issue: 21(4), P. 1198 - 1198

Published: Feb. 11, 2020

NAC (no apical meristem (NAM), Arabidopsis thaliana transcription activation factor (ATAF1/2) and cup shaped cotyledon (CUC2)) factors play crucial roles in plant development stress responses. Nevertheless, to date, only a few reports regarding stress-related genes are available Malus baccata (L.) Borkh. In this study, the MbNAC25 M. was isolated as member of plant-specific family that regulates Expression induced by abiotic stresses such drought, cold, high salinity heat. The ORF is 1122 bp, encodes 373 amino acids subcellular localization showed protein localized nucleus. addition, highly expressed new leaves stems using real-time PCR. To analyze function plants, we generated transgenic plants overexpressed MbNAC25. Under low-temperature (4 °C) high-salt (200 mM NaCl), overexpressing enhanced tolerance against cold drought conferring higher survival rate than wild-type (WT). Correspondingly, chlorophyll content, proline activities antioxidant enzymes superoxide dismutase (SOD), peroxidase (POD) catalase (CAT) were significantly increased, while malondialdehyde (MDA) content lower. These results indicated overexpression improved via scavenging capability reactive oxygen species (ROS).

Language: Английский

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Approaches Involved in the Vegetable Crops Salt Stress Tolerance Improvement: Present Status and Way Ahead

Frontiers in Plant Science, Journal Year: 2022, Volume and Issue: 12

Published: Feb. 21, 2022

Salt stress is one of the most important abiotic stresses as it persists throughout plant life cycle. The productivity crops prominently affected by soil salinization due to faulty agricultural practices, increasing human activities, and natural processes. Approximately 10% total land area (950 Mha) 50% irrigated (230 in world are under salt stress. As a consequence, an annual loss 12 billion US$ estimated because reduction agriculture production inflicted severity will increase upcoming years with population, hence forced use poor-quality irrigation water. Unfortunately, majority vegetable crops, such bean, carrot, celery, eggplant, lettuce, muskmelon, okra, pea, pepper, potato, spinach, tomato, have very low salinity threshold (EC t , which ranged from 1 2.5 dS m –1 saturated soil). These used almost every part lakes’ novel tolerance gene within their pool. severely affects yield quality these crops. To resolve this issue, genes governing extreme were identified transferred improvement for require not only influencing trait but also target those characters or traits that directly influence crop developmental stage. Genetic engineering grafting potential tool can improve regardless species barriers. In present review, updated detail various physio-biochemical molecular aspects involved been explored.

Language: Английский

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Combined Abiotic Stresses: Challenges and Potential for Crop Improvement

Agronomy, Journal Year: 2022, Volume and Issue: 12(11), P. 2795 - 2795

Published: Nov. 10, 2022

Abiotic stressors are major constraints that affect agricultural plant physio-morphological and biochemical attributes, resulting in a loss of normal functioning and, eventually, severe decline crop productivity. The co-occurrence different abiotic stresses, rather than specific stress situation, can alter or trigger wide range responses, such as altered metabolism, stunted growth, restricted development. Therefore, systematic rigorous studies pivotal for understanding the impact concurrent conditions on In doing so, this review emphasizes implications potential mechanisms controlling/managing combined which then be utilized to identify genotypes with tolerance. Furthermore, focuses recent biotechnological approaches deciphering tolerance plants. As result, agronomists, breeders, molecular biologists, field pathologists will benefit from literature assessing interactions between stresses performance development tolerant/resistant cultivars.

Language: Английский

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Tomato (Solanum lycopersicum) WRKY23 enhances salt and osmotic stress tolerance by modulating the ethylene and auxin pathways in transgenic Arabidopsis

Plant Physiology and Biochemistry, Journal Year: 2023, Volume and Issue: 195, P. 330 - 340

Published: Jan. 13, 2023

Language: Английский

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CRISPR/Cas9-mediated SNAC9 mutants reveal the positive regulation of tomato ripening by SNAC9 and the mechanism of carotenoid metabolism regulation

Horticulture Research, Journal Year: 2023, Volume and Issue: 10(4)

Published: Feb. 10, 2023

NAC transcriptional regulators are crucial for tomato ripening. Virus-induced gene silencing (VIGS) of

Language: Английский

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