ORIGINAL RESEARCH article
Front. Plant Sci.
Sec. Plant Pathogen Interactions
Volume 16 - 2025 | doi: 10.3389/fpls.2025.1657476
A new bacterial blight resistance gene Xa50(t) in the Xa4 locus confers resistance against Xanthomonas oryzae pv. oryzae in rice
Provisionally accepted
Man Li1,2
Muhammad Sohaib Shafique1
Houyu Zhou1Jialu Wang1Yapei Liu1
Wang Chunlian1*Zhonghua Wang2*
Zhiyuan Ji1*- 1Chinese Academy of Agricultural Sciences Institute of Crop Sciences, Beijing, China
- 2Northwest A&F University College of Agronomy, Yangling, China
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A new bacterial blight resistance gene, Xa50(t), was identified in the rice germplasm line CX315 and fine-mapped to a 147.7 kb region within the proximity of Xa4 locus on chromosome 11. Transcriptome analysis revealed that Xa50(t)-mediated resistance is associated with the enrichment of oxidative stress response, phenylpropanoid biosynthesis, and MAPK signaling pathways. While pathotyping and Xa4 knockout experiments confirmed that Xa50(t) confers distinct resistance to Xanthomonas oryzae pv. oryzae independent of Xa4.
Keywords: Bacterial blight resistance, Xa50(t), Xanthomonas oryzae pv. oryzae (Xoo), Wallassociated kinase (WAK), Xa4
Received: 01 Jul 2025; Accepted: 07 Aug 2025.
Copyright: © 2025 Li, Shafique, Zhou, Wang, Liu, Chunlian, Wang and Ji. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Wang Chunlian, Chinese Academy of Agricultural Sciences Institute of Crop Sciences, Beijing, China
Zhonghua Wang, Northwest A&F University College of Agronomy, Yangling, China
Zhiyuan Ji, Chinese Academy of Agricultural Sciences Institute of Crop Sciences, Beijing, China
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