Molecular cloning, bioinformatics, and expression profiling of a dehydration-responsive element-binding-2 (DREB2) homologue fromFestuca arundinacea,FapDREB2, with high drought tolerance

2008 ◽  
Vol 83 (2) ◽  
pp. 199-206 ◽  
Author(s):  
Zhifei Zhang ◽  
Liqun Rao ◽  
Zhiyang Zhang ◽  
Zuoxiang Xiang ◽  
Zhijian Yang ◽  
...  
Keyword(s):  
Drought Tolerance ◽  
Molecular Cloning ◽  
Expression Profiling ◽  
Responsive Element

scholarly journals Arabidopsis CPK6 positively regulates ABA signaling and drought tolerance through phosphorylating ABA-responsive element-binding factors

2019 ◽  
Vol 71 (1) ◽  
pp. 188-203 ◽  
Author(s):  
Hanfeng Zhang ◽  
Daoyin Liu ◽  
Bo Yang ◽  
Wu-Zhen Liu ◽  
Bangbang Mu ◽  
...  
Keyword(s):  
Transcription Factors ◽  
Protein Kinase ◽  
Seed Germination ◽  
Drought Tolerance ◽  
Aba Signaling ◽  
Dependent Protein Kinase ◽  
Calcium Dependent ◽  
Dependent Protein ◽  
Responsive Element ◽  
Calcium Dependent Protein Kinase

Arabidopsis calcium-dependent protein kinase CPK6 positively regulates seed germination, seedling growth, and drought tolerance via phosphorylating ABF and ABI5 transcription factors.

scholarly journals Arabidopsis thaliana trehalose-6-phosphate phosphatase gene TPPI enhances drought tolerance by regulating stomatal apertures

2020 ◽  
Vol 71 (14) ◽  
pp. 4285-4297 ◽  
Author(s):  
Qingfang Lin ◽  
Song Wang ◽  
Yihang Dao ◽  
Jianyong Wang ◽  
Kai Wang
Keyword(s):  
Drought Stress ◽  
Drought Tolerance ◽  
Stomatal Closure ◽  
Primary Root ◽  
Stomatal Aperture ◽  
Wild Type ◽  
Trehalose Metabolism ◽  
Use Efficiency ◽  
Responsive Element ◽  
Primary Root Length

Abstract Transpiration occurs through stomata. The alteration of stomatal apertures in response to drought stress is an important process associated with water use efficiency (WUE). Trehalose-6-phosphate phosphatase (TPP) family genes have been reported to participate in adjustment of stomatal aperture. However, there have been no reports of the trehalose metabolism pathway genes improving WUE, and the upstream signalling pathway modulating these genes is not clear. Here, we demonstrate that a member of the TPP gene family, AtTPPI, confers drought resistance and improves WUE by decreasing stomatal apertures and improving root architecture. The reduced expression of AtTPPI caused a drought-sensitive phenotype, while its overexpression significantly increased drought tolerance. Abscisic acid (ABA)-induced stomatal closure experiments confirmed that AtTPPI mutation increased the stomatal aperture compared with that of wild-type plants; in contrast, overexpression plants had smaller stomatal apertures than those of wild-type plants. Moreover, AtTPPI mutation also caused stunted primary root length and compromised auxin transport, while overexpression plants had longer primary root lengths. Yeast one-hybrid assays showed that ABA-responsive element-binding factor1 (ABF1), ABF2, and ABF4 directly regulated AtTPPI expression. In summary, the way in which AtTPPI responds to drought stress suggests that AtTPPI-mediated stomatal regulation is an important mechanism to cope with drought stress and improve WUE.

Expression profiling of rice segregating for drought tolerance QTLs using a rice genome array

2004 ◽  
Vol 5 (2) ◽  
pp. 104-116 ◽  
Author(s):  
Samuel P. Hazen ◽  
M. Safiullah Pathan ◽  
Alma Sanchez ◽  
Ivan Baxter ◽  
Molly Dunn ◽  
...  
Keyword(s):  
Drought Tolerance ◽  
Expression Profiling ◽  
Rice Genome ◽  
Genome Array ◽  
Rice Genome Array
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