Balancing selection and wild gene pool contribute to resistance in global rice germplasm against planthopper
文献类型： 外文期刊
作者： Zhou, Cong 1 ; Zhang, Qian 1 ; Chen, Yu 1 ; Huang, Jin 1 ; Guo, Qin 1 ; Li, Yi 1 ; Wang, Wensheng 2 ; Qiu, Yongfu 4 ; Guan, 1 ;
作者机构： 1.Wuhan Univ, State Key Lab Hybrid Rice, Coll Life Sci, Wuhan 430072, Peoples R China
2.Chinese Acad Agr Sci, Inst Crop Sci, Beijing 100081, Peoples R China
3.Anhui Agr Univ, Coll Agron, Hefei 230036, Peoples R China
4.Guangxi Univ, Agr Coll, State Key Lab Conservat & Utilizat Subtrop Agrobi, Nanning 530004, Peoples R China
5.Hunan Acad Agr Sci, Hunan Hybrid Rice Res Ctr, State Key Lab Hybrid Rice, Changsha 410125, Peoples R China
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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