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. 2021 Dec 20;22(24):13628. doi: 10.3390/ijms222413628

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

Working model of redundant Tal2b and Tal2c from Xanthomonas oryzae pv. oryzicola. Xoc delivers two TALEs, Tal2b and Tal2c, into rice cells using a type III secretion system (T3SS). Tal2b and Tal2c then enter the nucleus to directly bind to EBEs of the 2-oxoglutarate-dependent dioxygenase (2OGD) genes OsF3H_03g and OsF3H_04g promoters and activate gene expression, respectively. However, Xanthomonas oryzae pv. oryzae delivers only a Tal2b homologue, Tal9b, to directly bind to EBE of OsF3H_03g promoter to promote infection. Finally, OsF3H_03g and OsF3H_04g work as similar functions in the negative regulation of defense and SA content in rice against Xoc.