The wheat LLM-domain-containing transcription factor TaGATA1 positively modulates host immune response to Rhizoctonia cerealis

Liu, X., Zhu, X., Wei, X., Lu, C. ORCID: 0000-0002-0064-4725, Shen, F., Zhang, X. and Zhang, Z., 2019. The wheat LLM-domain-containing transcription factor TaGATA1 positively modulates host immune response to Rhizoctonia cerealis. Journal of Experimental Botany. ISSN 0022-0957

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Abstract

Wheat (Triticumaestivum) is essential for global food security. Rhizoctonia cerealis is the causal pathogen of sharp eyespot, an important disease of wheat. GATA proteins in model plants have been implicated in growth and development; however, little is known about their roles in immunity. Here, we reported a defence role of a wheat LLM-domain-containing B-GATA transcription factor, TaGATA1, against R. cerealis infection and explored the underlying mechanism. Through transcriptomic analysis, TaGATA1 was identified to be more highly expressed in resistant wheat genotypes than in susceptible wheat genotypes. TaGATA1 was located on chromosome 3B and had two homoeologous genes on chromosomes 3A and 3D. TaGATA1 was demonstrated to localize in the nucleus, possess transcriptional-activation activity, and bind to GATA-core cis-elements. TaGATA1 overexpression significantly enhanced resistance of transgenic wheat to R. cerealis, whereas silencing of TaGATA1 suppressed the resistance. RT-qPCR and chromatin immunoprecipitation-qPCR results indicated that TaGATA1 directly bound to and activated certain defence genes in host immune response to R. cerealis. Collectively, TaGATA1 positively regulates immune responses to R. cerealis through activating expression of defence genes in wheat. This study reveals a new function of plant GATAs in immunity and provides a candidate gene for improving crop resistance to R. cerealis.

Item Type: Journal article
Publication Title: Journal of Experimental Botany
Creators: Liu, X., Zhu, X., Wei, X., Lu, C., Shen, F., Zhang, X. and Zhang, Z.
Publisher: Oxford University Press
Date: 22 September 2019
ISSN: 0022-0957
Identifiers:
NumberType
10.1093/jxb/erz409DOI
Rights: © the author(s) 2019. Published by Oxford University Press on behalf of the Society for Experimental Biology. This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Divisions: Schools > School of Animal, Rural and Environmental Sciences
Depositing User: Jonathan Gallacher
Date Added: 24 Sep 2019 15:18
Last Modified: 24 Sep 2019 15:18
URI: http://irep.ntu.ac.uk/id/eprint/37754

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