Lineage Divergence of Dendrolimus punctatus in Southern China Based on Mitochondrial Genome

Frontiers in Genetics
Huicong DuXiang-Bo Kong

Abstract

In southern China, the masson pine caterpillar, Dendrolimus punctatus, has caused serious damage to the Pinus massoniana (Lamb.) pine forests. Here, the whole mitochondrial DNA (mtDNA) was employed to analyze the population evolution of D. punctatus and to understand the process underlying its current phylogenetic pattern. D. punctatus populations within its distribution range in China were categorized into five subgroups: central and eastern China (CEC), southwestern China (SWC), Yibin in Sichuan (SC), Baise in Guangxi (GX), and Luoding in Guangdong (GD), with a high level of haplotype diversity and nucleotide diversity among them. The genetic distances between subgroups are relatively large; however, the genetic distances between populations within the CEC subgroup were relatively small, suggesting that many populations were closely related in this subgroup. The mantel test showed that geographic distance had an important impact on the genetic distance of different geographic populations (r = 0.3633, P < 0.001). The neutrality tests, Bayesian skyline plot, and haplotype network showed that D. punctatus experienced a population expansion around 100,000 years ago. The divergence times of GX/SC, SWC, GD, and CEC were 0.347, 0.23...Continue Reading

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Methods Mentioned

BETA
electrophoresis
PCR

Software Mentioned

DnaSP
MITObim
Clustal X
BEAST
SOAPdenovo
Annovar
GATK
STRUCTURE
Arlequin
FigTree

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