Genomic and transcriptomic analyses of the elite rice variety Huizhan provide insight into disease resistance and heat tolerance
文献类型： 外文期刊
作者： Yang, Wei 2 ; Yang, Zhou 1 ; Yang, Lei 2 ; Li, Zheng 1 ; Zhang, Zhaowu 3 ; Wei, Tong 3 ; Huang, Renliang 1 ; Li, Guotian 2 ;
作者机构： 1.Jiangxi Acad Agr Sci, Natl Engn Res Ctr Rice Nanchang, Rice Res Inst,Minist Agr & Rural Affairs, Key Lab Germplasm Innovat & Breeding Double Croppi, Nanchang 330200, Jiangxi, Peoples R China
2.Huazhong Agr Univ, Ctr Crop Nanobiotechnol, Natl Key Lab Agr Microbiol, Hubei Hongshan Lab,Hubei Key Lab Plant Pathol, Wuhan 430070, Peoples R China
3.BGI Res, State Key Lab Agr Genom, Shenzhen 518083, Peoples R China
4.BGI Res, Wuhan 430074, Peoples R China
关键词： Genome assembly; Heat tolerance; Oryza sativa; Plant immunity; Ultra-long Nanopore sequencing
期刊名称：GENOMICS （ 影响因子：3.4； 五年影响因子：3.5 ）
ISSN： 0888-7543
年卷期： 2024 年 116 卷 5 期
页码：
收录情况： SCI
摘要： The indica rice variety Huizhan shows elite traits of disease resistance and heat tolerance. However, the underlying genetic basis of these traits is not fully understood due to limited genomic resources. Here, we used Nanopore long-read and next-generation sequencing technologies to generate a chromosome-scale genome assembly of Huizhan. Comparative genomics analysis uncovered a large chromosomal inversion and expanded gene families that are associated with plant growth, development and stress responses. Functional rice blast resistance genes, including Pi2, Pib and Ptr, and bacterial blight resistance gene Xa27, contribute to disease resistance of Huizhan. Furthermore, integrated genomics and transcriptomics analyses showed that OsHIRP1, OsbZIP60, the SOD gene family, and various transcription factors are involved in heat tolerance of Huizhan. The high-quality genome assembly and comparative genomics results presented in this study facilitate the use of Huizhan as an elite parental line in developing rice varieties adapted to disease pressure and climate challenges.
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