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TaPIE1 mediates wheat responses to Rhizoctonia cerealis and freezing stresses

Date:2014-07-23Author:AdminSource:ICS

The research team led by Prof. Zhang Zengyan in Institute of Crop Sciences (ICS), CAAS, cloned and discovered the functional roles of a novel ERF transcription factor TaPIE1 in wheat. TaPIE1 mediates host defense responses to both the necrotrophic fungal pathogen Rhizoctonia cerealis and freezing stresses. TaPIE1, as an activator-type ERF transcription factor, preferentially binds to the GCC-box cis-elements in promoters of defense and stress-responsive genes (Fig. A and B). R. cerealis and freezing challenges enhanced the transcript level and transactivation activity of TaPIE1 (Fig. C), which activated the expression of TaPIE1-activated defense- and stress-responsive genes (Fig. D), leading to enhanced resistance to both stresses (Fig. E and F). Ethylene positively regulated TaPIE1-mediated responses (Fig. G and H). This study firstly reported the coordinated regulation and underlying mechanism of a wheat ERF transcription factor in responses to pathogen R. cerealis and freezing stresses, which laid the foundation for molecular breeding for R. cerealis resistance.

 

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The results were published online in the international journal Plant Physiology on Jan 2014. Prof. Zhang Zengyan is the correspondence author of the paper. Ph. D student Zhu Xiuliang is the first author. The study was supported by the ‘863’ program ofChina(Grant no. 2012AA10A309 to Z Zhang) and the National Key Sci-Techprogram,China(Grant no. 2013ZX08002-001 to Z Zhang).

http://www.plantphysiol.org/content/early/2014/01/17/pp.113.229575.short?keytype=ref&ijkey=cJCcXxzEkWftuBI

 

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