{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,25]],"date-time":"2026-08-25T09:18:56Z","timestamp":1787649536199,"version":"build-2736575974"},"reference-count":41,"publisher":"MDPI AG","issue":"17","license":[{"start":{"date-parts":[[2026,8,25]],"date-time":"2026-08-25T00:00:00Z","timestamp":1787616000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Guangxi Zhuang Autonomous Region Science and Technology Department","award":["AB16380066"],"award-info":[{"award-number":["AB16380066"]}]},{"name":"Guangxi Zhuang Autonomous Region Science and Technology Department","award":["AA17204070"],"award-info":[{"award-number":["AA17204070"]}]},{"name":"Guangxi Zhuang Autonomous Region Science and Technology Department","award":["AA23062051"],"award-info":[{"award-number":["AA23062051"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Plants"],"abstract":"<jats:p>Rice (Oryza sativa L.) is a staple food crop worldwide, and improving disease resistance is a core target in rice breeding. In this study, we employed CRISPR\/Cas9 genome editing to modify the coding sequence (CDS) of two susceptibility genes, Bsr-d1 and Pi21, in the elite maintainer line Gengxiang B to enhance its blast resistance. We generated Bsr-d1\/Pi21 double homozygous mutants via Agrobacterium-mediated genetic transformation. Quantitative RT-PCR revealed significantly suppressed transcript accumulation of both target genes in the edited lines compared with the wild type Gengxiang B. Upon inoculation with Magnaporthe oryzae, multiple defense-related marker genes were markedly upregulated in the double mutants. Phenotypic assays demonstrated significantly reduced disease severity for both leaf and panicle blast in the edited lines compared with the wild type. Importantly, no statistically detectable differences were found between the double mutants and wild-type plants for key agronomic or grain quality traits. Collectively, these results demonstrate that CRISPR\/Cas9-mediated editing of susceptibility loci generates genetically stable blast-resistant rice germplasm without compromising agronomic traits or grain quality, providing valuable genetic resources for future rice varietal improvement.<\/jats:p>","DOI":"10.3390\/plants15172585","type":"journal-article","created":{"date-parts":[[2026,8,25]],"date-time":"2026-08-25T08:00:48Z","timestamp":1787644848000},"page":"2585","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["CRISPR\/Cas9-Mediated Editing of Bsr-d1 and Pi21 Enhances Blast Resistance in a High-Quality Rice Maintainer Line"],"prefix":"10.3390","volume":"15","author":[{"given":"Ke","family":"Lan","sequence":"first","affiliation":[{"name":"State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning 530004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lin","family":"Yuan","sequence":"additional","affiliation":[{"name":"State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning 530004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dacheng","family":"Zhao","sequence":"additional","affiliation":[{"name":"Guangxi Lvhai Seed Co., Ltd., Nanning 530007, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xixi","family":"Ma","sequence":"additional","affiliation":[{"name":"Guangxi Lvhai Seed Co., Ltd., Nanning 530007, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jinlian","family":"Yang","sequence":"additional","affiliation":[{"name":"State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning 530004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hu","family":"Wu","sequence":"additional","affiliation":[{"name":"State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning 530004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1527-5579","authenticated-orcid":false,"given":"Fang","family":"Liu","sequence":"additional","affiliation":[{"name":"State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning 530004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shengwu","family":"Chen","sequence":"additional","affiliation":[{"name":"Guangxi Lvhai Seed Co., Ltd., Nanning 530007, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rongbai","family":"Li","sequence":"additional","affiliation":[{"name":"State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning 530004, China"},{"name":"Guangxi Lvhai Seed Co., Ltd., Nanning 530007, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,8,25]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2369","DOI":"10.1007\/s11033-012-2318-0","article-title":"Blast resistance in rice: A review of conventional breeding to molecular approaches","volume":"40","author":"Miah","year":"2013","journal-title":"Mol. 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