Rice SRO1a Contributes to Xanthomonas TAL Effector-mediated Expression of Host Susceptible Genes.

Autor:	Yoshimura S; Department of Advanced Bioscience, Graduate School of Agriculture, Kindai University, Nakamachi, Nara 631-8505, Japan., Yoshihisa A; Department of Advanced Bioscience, Graduate School of Agriculture, Kindai University, Nakamachi, Nara 631-8505, Japan., Okamoto Y; Department of Advanced Bioscience, Graduate School of Agriculture, Kindai University, Nakamachi, Nara 631-8505, Japan., Hirano H; Department of Advanced Bioscience, Graduate School of Agriculture, Kindai University, Nakamachi, Nara 631-8505, Japan., Nakai Y; Department of Advanced Bioscience, Graduate School of Agriculture, Kindai University, Nakamachi, Nara 631-8505, Japan., Yamaguchi K; Department of Advanced Bioscience, Graduate School of Agriculture, Kindai University, Nakamachi, Nara 631-8505, Japan., Kawasaki T; Department of Advanced Bioscience, Graduate School of Agriculture, Kindai University, Nakamachi, Nara 631-8505, Japan.; Agricultural Technology and Innovation Research Institute, Kindai University, Nakamachi, Nara 631-8505, Japan.
Jazyk:	angličtina
Zdroj:	Plant & cell physiology [Plant Cell Physiol] 2024 Sep 03; Vol. 65 (8), pp. 1261-1270.
DOI:	10.1093/pcp/pcae057
Abstrakt:	Xanthomonas species infect many important crops and cause huge yield loss. These pathogens deliver transcription activator-like (TAL) effectors into the cytoplasm of plant cells. TAL effectors move to host nuclei, directly bind to the promoters of host susceptible genes, and activate their transcription. However, the molecular mechanisms by which TAL effectors induce host transcription remain unclear. We herein demonstrated that TAL effectors interacted with the SIMILAR TO RCD ONE (SRO) family proteins OsSRO1a and OsSRO1b in nuclei. A transactivation assay using rice protoplasts indicated that OsSRO1a and OsSRO1b enhanced the activation of the OsSWEET14 promoter by the TAL effector AvrXa7. The AvrXa7-mediated expression of OsSWEET14 was significantly reduced in ossro1a mutants. However, the overexpression of OsSRO1a increased disease resistance by up-regulating the expression of defense-related genes, such as WRKY62 and PBZ1. This was attributed to OsSRO1a and OsSRO1b also enhancing the transcriptional activity of WRKY45, a direct regulator of WRKY62 expression. Therefore, OsSRO1a and OsSRO1b appear to positively contribute to transcription mediated by bacterial TAL effectors and rice transcription factors. (© The Author(s) 2024. Published by Oxford University Press on behalf of Japanese Society of Plant Physiologists. All rights reserved. For commercial re-use, please contact reprints@oup.com for reprints and translation rights for reprints. All other permissions can be obtained through our RightsLink service via the Permissions link on the article page on our site–for further information please contact journals.permissions@oup.com.)
Databáze:	MEDLINE
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