scholarly journals The Arabidopsis NFYA5 Transcription Factor Is Regulated Transcriptionally and Posttranscriptionally to Promote Drought Resistance

2008 ◽  
Vol 20 (8) ◽  
pp. 2238-2251 ◽  
Author(s):  
Wen-Xue Li ◽  
Youko Oono ◽  
Jianhua Zhu ◽  
Xin-Jian He ◽  
Jian-Min Wu ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Drought Resistance

Basic leucine zipper transcription factor OsbZIP16 positively regulates drought resistance in rice

Plant Science ◽  
2012 ◽  
Vol 193-194 ◽  
pp. 8-17 ◽  
Author(s):  
Hao Chen ◽  
Wei Chen ◽  
Junli Zhou ◽  
Hang He ◽  
Liangbi Chen ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Drought Resistance ◽  
Leucine Zipper ◽  
Basic Leucine Zipper

scholarly journals Feedback Regulation of ABA Signaling and Biosynthesis by a bZIP Transcription Factor Targets Drought-Resistance-Related Genes

2016 ◽  
Vol 171 (4) ◽  
pp. 2810-2825 ◽  
Author(s):  
Wei Zong ◽  
Ning Tang ◽  
Jun Yang ◽  
Lei Peng ◽  
Siqi Ma ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Drought Resistance ◽  
Feedback Regulation ◽  
Bzip Transcription Factor ◽  
Aba Signaling

Controlled nuclear import of the transcription factor NTL6 reveals a cytoplasmic role of SnRK2.8 in the drought-stress response

2012 ◽  
Vol 448 (3) ◽  
pp. 353-363 ◽  
Author(s):  
Mi Jung Kim ◽  
Mi-Jeong Park ◽  
Pil Joon Seo ◽  
Jin-Su Song ◽  
Hie-Joon Kim ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Drought Stress ◽  
Transgenic Plants ◽  
Drought Resistance ◽  
Nuclear Import ◽  
Proteolytic Processing ◽  
Transcriptional Responses ◽  
Resistance Response ◽  
Proteolytic Activation

Controlled proteolytic activation of membrane-anchored transcription factors provides an adaptation strategy that guarantees rapid transcriptional responses to abrupt environmental stresses in both animals and plants. NTL6 is a plant-specific NAC [NAM/ATAF1/2/CUC2] transcription factor that is expressed as a dormant plasma membrane-associated form in Arabidopsis. Proteolytic processing of NTL6 is triggered by abiotic stresses and ABA (abscisic acid). In the present study, we show that NTL6 is linked directly with SnRK (Snf1-related protein kinase) 2.8-mediated signalling in inducing a drought-resistance response. SnRK2.8 phosphorylates NTL6 primarily at Thr142. NTL6 phosphorylation by SnRK2.8 is required for its nuclear import. Accordingly, a mutant NTL6 protein, in which Thr142 was mutated to an alanine, was poorly phosphorylated and failed to enter the nucleus. In accordance with the role of SnRK2.8 in drought-stress signalling, transgenic plants overproducing either NTL6 or its active form 6ΔC (35S:NTL6 and 35S:6ΔC) exhibited enhanced resistance to water-deficit conditions such as those overproducing SnRK2.8 (35S:SnRK2.8). In contrast, NTL6 RNAi (RNA interference) plants were susceptible to dehydration as observed in the SnRK2.8-deficient snrk2.8-1 mutant. Furthermore, the dehydration-resistant phenotype of 35S:NTL6 transgenic plants was compromised in 35S:NTL6 X snrk2.8-1 plants. These observations indicate that SnRK2.8-mediated protein phosphorylation, in addition to a proteolytic processing event, is important for NTL6 function in inducing a drought-resistance response.

scholarly journals Targeting the B1 Gene and Analysis of Its Polymorphism Associated with Awned/Awnless Trait in Russian Germplasm Collections of Common Wheat

Plants ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 2285
Author(s):  
Andrey B. Shcherban ◽  
Diana D. Kuvaeva ◽  
Olga P. Mitrofanova ◽  
Svetlana E. Khverenets ◽  
Alexander I. Pryanishnikov ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Zinc Finger ◽  
Common Wheat ◽  
Drought Resistance ◽  
Promoter Region ◽  
Zinc Finger Transcription Factor ◽  
Germplasm Collections ◽  
B1 Gene ◽  
Its Polymorphism

The presence of awns on the ear is associated with a number of important plant properties, such as drought resistance, quality of the grain mass during processing, etc. The main manifestations of this trait are controlled by the B1 gene, which has recently been identified and encodes the C2H2 zinc finger transcription factor. Based on the previously identified SNPs in the promoter region of this gene, we constructed markers for dominant and recessive alleles which determine awnless and awned phenotypes, respectively. The markers were successful for use in targeting the respective alleles of the B1 gene in 176 varieties of common wheat, accessions of T. spelta L., as well as on F2/F3 hybrids from crosses between awned and awnless forms of T. aestivum. We first identified a new allele, b1mite, which has both an insert of a miniature Stowaway-like transposon, 261 bp in length, and 33 novel SNPs in the promoter region. Despite these changes, this allele had no effect on the awned phenotype. The possible mechanisms of the influence of the analyzed gene on phenotype are discussed.

scholarly journals The AP2 transcription factor NtERF172 confers drought resistance by modifying NtCAT

2020 ◽  
Vol 18 (12) ◽  
pp. 2444-2455
Author(s):  
Qiang Zhao ◽  
Ri‐Sheng Hu ◽  
Dan Liu ◽  
Xin Liu ◽  
Jie Wang ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Drought Resistance ◽  
Ap2 Transcription Factor

Tuning drought resistance by using a root-specific expression transcription factor PdNF-YB21 in Arabidopsis thaliana

2021 ◽  
Vol 145 (2) ◽  
pp. 379-391
Author(s):  
Yue Zhang ◽  
Chao Shen ◽  
Yangyan Zhou ◽  
Chao Liu ◽  
Weilun Yin ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Transcription Factor ◽  
Drought Resistance ◽  
Specific Expression

scholarly journals Indole -3-acetic acid improves drought tolerance of white clover associated with activating auxin-related genes, abscisic acid and jasmonic acid-induced stress responsive transcription factors, and inhibiting senescence genes

2020 ◽  
Author(s):  
Youzhi Zhang ◽  
Yaping Li ◽  
Muhammad Jawad Hassan ◽  
Zhou Li ◽  
Yan Peng
Keyword(s):  
Transcription Factor ◽  
Drought Stress ◽  
Drought Resistance ◽  
White Clover ◽  
Dry Weight ◽  
Expression Levels ◽  
Regulated Expression ◽  
Transcription Factor Genes ◽  
Relative Water ◽  
Exogenous Iaa

Abstract Auxin plays an important role in regulating plant development. To idenfity what effects IAA has in white clover under drought stress and how IAA regulates white clover response to drought. Relative water content, chlorophyll content, six phytohormones content, expression of gene-related to IAA signal perception and synthesis, transcription factor genes related to drought-resistance and senescence genes were investigated in white clover pretreated with 1µM exogenous IAA or 100µM L-AOPP (inhibitor of IAA synthesis) under 15% polyethylene glycol-6000 (PEG-6000). Compared to control, drought stress significantly diminished stem dry weight (g/10 plant), relative water content (RWC, %) and total chlorophyll content (Chl, mg/g). Exogenous IAA significantly increased RWC and Chl, however, L-AOPP decreased stem dry weight, RWC and Chl compared with direct drought treatment. Besides that, compared with direct drought set, exogenous IAA significantly improved ABA content and JA content, up-regulated expression levels of some auxin-responsive genes ( GH3.1 , GH3.9 , IAA8 ) , transcription factor genes ( bZIP11 , DREB2 , MYB14 , MYB48 , WRKY2 , WRKY56 , WRKY108715 ) related to drought-resistance and drought resistance gene ( RD22 ). Meanwhile, exogenous IAA down-regulated expression levels of several auxin-responsive genes ( GH3.3 , GH3.6 , IAA27 ) and leaf senescence genes ( SAG101 and SAG102 ). Contrarily, L-AOPP significantly reduced ABA, GA3 and JA content, down-regulated expression levels of GH3.1 , GH3.9 , IAA8 , bZIP11 , DREB2 , MYB14 , MYB48 , WRKY2 , WRKY56 , WRKY108715 , ERD and RD22 , and up-regulated expression levels of SAG101 and SAG102 . Collectively, these data suggested a positive role of exogenous IAA in alleviating drought damage through many involved physiological processes in white clover.

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