Balancing selection and wild gene pool contribute to resistance in global rice germplasm against planthopper

文献类型： 外文期刊

第一作者： Zhou, Cong

作者： Zhou, Cong;Zhang, Qian;Chen, Yu;Huang, Jin;Guo, Qin;Li, Yi;Guan, Wei;Zhang, Jing;Guo, Jianping;Shi, Shaojie;Wu, Di;Zheng, Xiaohong;Nie, Lingyun;Tan, Jiaoyan;Huang, Chaomei;Ma, Yinhua;Yang, Fang;Du, Bo;Zhu, Lili;Chen, Rongzhi;He, Guangcun;Wang, Wensheng;Li, Zhikang;Wang, Wensheng;Li, Zhikang;Qiu, Yongfu;Fu, Xiqin;Yuan, Longping

作者机构：

关键词： balancing selection; genome-wide association study; host plant; insect; wild rice

期刊名称：JOURNAL OF INTEGRATIVE PLANT BIOLOGY （ 影响因子：7.061； 五年影响因子：6.002 ）

ISSN： 1672-9072

年卷期： 2021 年 63 卷 10 期

页码：

收录情况： SCI

摘要： Interactions and co-evolution between plants and herbivorous insects are critically important in agriculture. Brown planthopper (BPH) is the most severe insect of rice, and the biotypes adapt to feed on different rice genotypes. Here, we present genomics analyses on 1,520 global rice germplasms for resistance to three BPH biotypes. Genome-wide association studies identified 3,502 single nucleotide polymorphisms (SNPs) and 59 loci associated with BPH resistance in rice. We cloned a previously unidentified gene Bph37 that confers resistance to BPH. The associated loci showed high nucleotide diversity. Genome-wide scans for trans-species polymorphisms revealed ancient balancing selection at the loci. The secondarily evolved insect biotypes II and III exhibited significantly higher virulence and overcame more rice varieties than the primary biotype I. In response, more SNPs and loci evolved in rice for resistance to biotypes II and III. Notably, three exceptional large regions with high SNP density and resistance-associated loci on chromosomes 4 and 6 appear distinct between the resistant and susceptible rice varieties. Surprisingly, these regions in resistant rice might have been retained from wild species Oryza nivara. Our findings expand the understanding of long-term interactions between rice and BPH and provide resistance genes and germplasm resources for breeding durable BPH-resistant rice varieties.

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