The genetic structure of Asian corn borer, Ostrinia furnacalis, populations in China: Haplotype variance in northern populations and potential impact on management of resistance to transgenic maize
文献类型: 外文期刊
第一作者: He, Kanglai
作者: He, Kanglai;Wang, Zhenying;Li, Jing;Coates, Brad S.;Kim, Kyung Seok;Bourguet, Denis;Ponsard, Sergine;Ponsard, Sergine
作者机构:
关键词: Gene flow;Genetic differentiation;Microsatellite;Mitochondrial haplotype;Ostrinia furnacalis
期刊名称:JOURNAL OF HEREDITY ( 影响因子:2.645; 五年影响因子:3.069 )
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收录情况: SCI
摘要: Asian corn borer, Ostrinia furnacalis (Guenée), is a severe pest that infests cultivated maize in the major production regions of China. Populations show genotype-by-environment variation in voltinism, such that populations with a single generation (univoltine) are fixed in Northern China where growing seasons are short. Low genetic differentiation was found among samples from 33 collection sites across China and one site from North Korea (n = 1673) using variation at 6 nuclear microsatellite loci (ENA corrected global FST = 0.020; P value < 0.05). Analysis of molecular variance indicated that geographic region, number of generations or voltinism accounted for <0.38% of the total genetic variation at nuclear loci and was corroborated by clustering of co-ancestries among genotypes using the program STRUCTURE. In contrast, a mitochondrial haplotype network identified 4 distinct clusters, where 70.5% of samples from univoltine populations were within a single group. Univoltine populations were also placed into a unique cluster using Population Graph and Principal component analyses, which showed significant differentiation with multivoltine populations (φST = 0.400; P value < 0.01). This study suggests that gene flow among O. furnacalis in China may be high among regions, with the exception of northeastern localities. Haplotype variation may be due to random genetic drift resulting from partial reproductive isolation between univoltine and multivoltine O. furnacalis populations. Such reproductive isolation might impact the potential spread of alleles that confer resistance to transgenic maize in China.
分类号: R394
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