Migration of Sogatella furcifera between the Greater Mekong Subregion and northern China revealed by mtDNA and SNP
文献类型: 外文期刊
作者: Yang, Nan 1 ; Dong, Zhaoke 1 ; Chen, Aidong 2 ; Yin, Yanqiong 2 ; Li, Xiangyong 2 ; Chu, Dong 1 ;
作者机构: 1.Qingdao Agr Univ, Coll Plant Hlth & Med, Key Lab Integrated Crop Pest Management Shandong, Qingdao 266109, Peoples R China
2.Yunnan Acad Agr Sci, Agr Environm & Resources Inst, Kunming 650205, Yunnan, Peoples R China
关键词: White-backed planthopper; Mitochondrial COI; Single-nucleotide polymorphism; Shandong; Population structure
期刊名称:BMC EVOLUTIONARY BIOLOGY ( 影响因子:3.26; 五年影响因子:3.732 )
ISSN: 1471-2148
年卷期: 2020 年 20 卷 1 期
页码:
收录情况: SCI
摘要: Background The white-backed planthopper (WBPH), Sogatella furcifera (Horvath) (Hemiptera, Delphacidae), is a migratory pest of rice in Asia. Shandong Province, in northern China, is located on the migration pathway of WBPH between southern and northeast China. The potential sources of WBPH in northern China are poorly understood. We studied the sources of WBPH in Shandong Province by determining the population genetic structure of WBPH in 18 sites distributed in Shandong and in six regions of the Greater Mekong Subregion (GMS). We used mitochondrial gene and single-nucleotide polymorphism (SNP) markers for analysis. Results All of the WBPH populations studied in the seven regions had low genetic diversity. Pairwise F-ST values based on mtDNA ranged from - 0.061 to 0.285, while F-ST based on SNP data ranged from - 0.007 to 0.009. These two molecular markers revealed that 4.40% (mtDNA) and 0.19% (SNP) genetic variation could be explained by the interpopulation variation, while the rest came from intrapopulation variation. The populations in the seven geographic regions comprised four hypothetical genetic clusters (K = 4) not associated with geographic location. Eighty-four of 129 individuals distributed across the given area were designated as recent migrants or of admixed ancestry. Although the substantial migration presented, a weak but significant correlation between genetic and geographic distances was found (r = 0.083, P = 0.004). Conclusion The Greater Mekong Subregion was the main genetic source of WBPH in Shandong, while other source populations may also exist. The genetic structure of WBPH is shaped by both migration and geographic barriers. These results help clarify the migration route and the source of WBPH in northern China.
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