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 - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Accéder directement au contenu
Article Dans Une Revue Journal of Heredity Année : 2014

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

Résumé

Asian corn borer, Ostrinia furnacalis (Guenee), 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 F-ST = 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 (phi(ST) = 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.

Dates et versions

hal-02637853 , version 1 (28-05-2020)

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Citer

Jing Li, Brad S. Coates, Seok Kim, Denis D. Bourguet, Sergine Ponsard, et al.. 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. Journal of Heredity, 2014, 105 (5), pp.642-655. ⟨10.1093/jhered/esu036⟩. ⟨hal-02637853⟩
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