scholarly journals A Novel WRKY Transcription Factor Is Required for Induction of PR-1a Gene Expression by Salicylic Acid and Bacterial Elicitors

2008 ◽  
Vol 146 (4) ◽  
pp. 1983-1995 ◽  
Author(s):  
Marcel C. van Verk ◽  
Dimitri Pappaioannou ◽  
Lyda Neeleman ◽  
John F. Bol ◽  
Huub J.M. Linthorst
Keyword(s):  
Gene Expression ◽  
Transcription Factor ◽  
Salicylic Acid ◽  
Wrky Transcription Factor

DIFFERATATION OF WHEAT WRKY TRANSCRIPTION FACTOR TaWRKY10 GENE EXPRESSION IN ABIOTIC STRESS RESISTANCE

2015 ◽  
Vol 13 (2) ◽  
pp. 136-140 ◽  
Author(s):  
Odgerel Bold ◽  
R Jana Jeevan ◽  
Yong Pyo Lim ◽  
Enkhchimeg Vanjildorj
Keyword(s):  
Gene Expression ◽  
Transcription Factor ◽  
Abiotic Stress ◽  
Triticum Aestivum L ◽  
Wrky Transcription Factor ◽  
Expression Level ◽  
Wheat Varieties ◽  
Chain Reactions ◽  
Polymerase Chain Reactions ◽  
Polymerase Chain

Drought, cold and salinity are the primary factors limiting wheat production. It has been shown that a wheat stress-responsive WRKY transcription factor encoded by the wheat WRKY10 gene plays an important role in drought, cold and salinty stress tolerance. The aim of the current study was to WRKY10 gene expression in drought, cold and salinity up-regulated in six varieties of Mongolian local wheat (Triticum aestivum L.), to select the stress tolerant best variety for breeding program. Plants expressing TaWRKY10 was up-regulated 48 hours stress by treatment with polyethylene glycol (PEG6000), 200 mM NaCl and 40C cold. Results of RT-PCR indicate that the all varieties show the gene expression level. Furthermore, reverse transcription polymerase chain reactions revealed that the expressions of WRKY 10 genes involved in abiotic stress signaling of six wheat varieties. These results indicated highest expression level of the WRKY10 in Darkhan-131 and lowest expression in Darkhan-34. And our study provided a promising approach to improve the tolerances of wheat cultivars to drought and salinity varieties of selection materials.Mongolian Journal of Agricultural Sciences Vol.13(2) 2014: 136-140

scholarly journals Arabidopsis WRKY70 Is Required for Full RPP4-Mediated Disease Resistance and Basal Defense Against Hyaloperonospora parasitica

2007 ◽  
Vol 20 (2) ◽  
pp. 120-128 ◽  
Author(s):  
Colleen Knoth ◽  
Jon Ringler ◽  
Jeffery L. Dangl ◽  
Thomas Eulgem
Keyword(s):  
Cell Death ◽  
Transcription Factor ◽  
Salicylic Acid ◽  
Defense Mechanism ◽  
Wrky Transcription Factor ◽  
Reactive Oxygen Intermediates ◽  
Oxygen Intermediates ◽  
Transcript Levels ◽  
Hyaloperonospora Parasitica ◽  
Basal Defense

AtWRKY70, encoding a WRKY transcription factor, is co-expressed with a set of Arabidopsis genes that share a pattern of RPP4- and RPP7-dependent late upregulation in response to Hyaloperonospora parasitica infection (LURP) genes. We show that AtWRKY70 is required for both full RPP4-mediated resistance and basal defense against H. parasitica. These two defense pathways are related to each other, because they require PAD4 and salicylic acid (SA). RPP7 function, which is independent from PAD4 and SA, is not affected by insertions in AtWRKY70. Although AtWRKY70 is required for RPP4-resistance, it appears not to contribute significantly to RPP4-triggered cell death. Furthermore, our data indicate that AtWRKY70 functions downstream of defense-associated reactive oxygen intermediates and SA. Constitutive and RPP4-induced transcript levels of two other LURP genes are reduced in AtWRKY70 T-DNA mutants, indicating a direct or indirect role for AtWRKY70 in their regulation. We propose that AtWRKY70 is a component of a basal defense mechanism that is boosted by engagement of either RPP4 or RPP7 and is required for RPP4-mediated resistance.

scholarly journals PtrWRKY73, a salicylic acid-inducible poplar WRKY transcription factor, is involved in disease resistance in Arabidopsis thaliana

2015 ◽  
Vol 34 (5) ◽  
pp. 831-841 ◽  
Author(s):  
Yanjiao Duan ◽  
Yuanzhong Jiang ◽  
Shenglong Ye ◽  
Abdul Karim ◽  
Zhengyi Ling ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Transcription Factor ◽  
Salicylic Acid ◽  
Disease Resistance ◽  
Wrky Transcription Factor
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