A Novel SPOTTED LEAF1-1 (SPL11-1) Gene Confers Resistance to Rice Blast and Bacterial Leaf Blight Diseases in Rice (Oryza sativa L.)
文献类型： 外文期刊
作者： Lin, Shaojun 1 ; He, Niqing 1 ; Cheng, Zhaoping 1 ; Huang, Fenghuang 1 ; Wang, Mingmin 2 ; Al Aboud, Nora M. 4 ; Abou-Elwafa, Salah F. 5 ; Yang, Dewei 1 ;
作者机构： 1.Fujian Acad Agr Sci, Inst Rice, Fuzhou 350018, Peoples R China
2.Fujian Agr & Forestry Univ, Coll Agr, Fuzhou 350002, Peoples R China
3.Fujian Agr & Forestry Univ, Plant Immun Ctr, Fuzhou 350002, Peoples R China
4.Umm Al Qura Univ, Fac Sci, Dept Biol, Mecca 21955, Saudi Arabia
5.Assiut Univ, Fac Agr, Agron Dept, Assiut 71526, Egypt
关键词： lesion mimic mutants; bacterial leaf blight; ethyl methane sulfonate; mutagenesis; genetic mapping; bulked segregant analysis
期刊名称：AGRONOMY-BASEL （ 影响因子：3.4； 五年影响因子：3.8 ）
ISSN：
年卷期： 2024 年 14 卷 10 期
页码：
收录情况： SCI
摘要： Programmed cell death (PCD) plays critical roles in plant immunity but must be regulated to prevent excessive damage. In this study, a novel spotted leaf (spl11-1) mutant was identified from an ethyl methane sulfonate (EMS) population. The SPL11-1 gene was genetically mapped to chromosome 12 between the Indel12-37 and Indel12-39 molecular markers, which harbor a genomic region of 27 kb. Annotation of the SPL11-1 genomic region revealed the presence of two candidate genes. Through gene prediction and cDNA sequencing, it was confirmed that the target gene in the spl11-1 mutant is allelic to the rice SPOTTED LEAF (SPL11), hereafter referred to as spl11-1. Sequence analysis of SPL11 revealed a single bp deletion (T) between the spl11-1 mutant and the 'Shuangkang77009' wild type. Moreover, protein structure analysis showed that the structural differences between the SPL11-1 and SPL11 proteins might lead to a change in the function of the SPL11 protein. Compared to the 'Shuangkang77009' wild type, the spl11-1 mutant showed more disease resistance. The agronomical evaluation showed that the spl11-1 mutant showed more adverse traits. Through further mutagenesis treatment, we obtained the spl11-2 mutant allelic to spl11-1, which has excellent agronomic traits and more improvement and may have certain breeding prospects in future breeding for disease resistance.
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