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Insight into the Migration Routes of Plutella xylostella in China Using mtCOI and ISSR Markers.

Yang J, Tian L, Xu B, Xie W, Wang S, Zhang Y, Wang X, Wu Q - PLoS ONE (2015)

Bottom Line: The dominant haplotypes, LX1 and LX2, differed significantly from all other haplotypes both in terms of the number of individuals with those haplotypes and their distributions.Haplotypes that were shared among populations revealed that P. xylostella migrates from the lower reaches of the Yangtze River to northern China and then to northeastern China.Our results also revealed another potential migration route for P. xylostella, i.e., from southwestern China to both northwestern and southern China.

View Article: PubMed Central - PubMed

Affiliation: Key Laboratory of Agriculture Biological Functional Gene of Heilongjiang Provincial Education Committee, Northeast Agricultural University, Harbin, China; Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China.

ABSTRACT
The larvae of the diamondback moth, Plutella xylostella, cause major economic losses to cruciferous crops, including cabbage, which is an important vegetable crop in China. In this study, we used the mitochondrial COI gene and 11 ISSR markers to characterize the genetic structure and seasonal migration routes of 23 P. xylostella populations in China. Both the mitochondrial and nuclear markers revealed high haplotype diversity and gene flow among the populations, although some degree of genetic isolation was evident between the populations of Hainan Island and other sampling sites. The dominant haplotypes, LX1 and LX2, differed significantly from all other haplotypes both in terms of the number of individuals with those haplotypes and their distributions. Haplotypes that were shared among populations revealed that P. xylostella migrates from the lower reaches of the Yangtze River to northern China and then to northeastern China. Our results also revealed another potential migration route for P. xylostella, i.e., from southwestern China to both northwestern and southern China.

No MeSH data available.


Results of a Mantel test showing the correlation between pairwise Fst values and the logarithm of geographic distances of Chinese populations of Plutella xylostella.Reduced major axis (RMA) analyses were calculated from 10000 randomizations.
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pone.0130905.g002: Results of a Mantel test showing the correlation between pairwise Fst values and the logarithm of geographic distances of Chinese populations of Plutella xylostella.Reduced major axis (RMA) analyses were calculated from 10000 randomizations.

Mentions: The FST values among the 23 populations ranged from -0.03916 to 0.2433 (S2 Table). Neutrality tests showed that the Tajima’s D and Fu’s FS values of all P. xylostella populations were negative (Table 2), which does not support a neutral model of evolution and suggests that population expansion, genetic hitchhiking, and/or selection have occurred during the evolutionary history of P. xylostella. The Mantel test revealed a weak but significant positive correlation between genetic distance and the log of geographical distance (r = 0.1885, P = 0.0030; Fig 2).


Insight into the Migration Routes of Plutella xylostella in China Using mtCOI and ISSR Markers.

Yang J, Tian L, Xu B, Xie W, Wang S, Zhang Y, Wang X, Wu Q - PLoS ONE (2015)

Results of a Mantel test showing the correlation between pairwise Fst values and the logarithm of geographic distances of Chinese populations of Plutella xylostella.Reduced major axis (RMA) analyses were calculated from 10000 randomizations.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4476569&req=5

pone.0130905.g002: Results of a Mantel test showing the correlation between pairwise Fst values and the logarithm of geographic distances of Chinese populations of Plutella xylostella.Reduced major axis (RMA) analyses were calculated from 10000 randomizations.
Mentions: The FST values among the 23 populations ranged from -0.03916 to 0.2433 (S2 Table). Neutrality tests showed that the Tajima’s D and Fu’s FS values of all P. xylostella populations were negative (Table 2), which does not support a neutral model of evolution and suggests that population expansion, genetic hitchhiking, and/or selection have occurred during the evolutionary history of P. xylostella. The Mantel test revealed a weak but significant positive correlation between genetic distance and the log of geographical distance (r = 0.1885, P = 0.0030; Fig 2).

Bottom Line: The dominant haplotypes, LX1 and LX2, differed significantly from all other haplotypes both in terms of the number of individuals with those haplotypes and their distributions.Haplotypes that were shared among populations revealed that P. xylostella migrates from the lower reaches of the Yangtze River to northern China and then to northeastern China.Our results also revealed another potential migration route for P. xylostella, i.e., from southwestern China to both northwestern and southern China.

View Article: PubMed Central - PubMed

Affiliation: Key Laboratory of Agriculture Biological Functional Gene of Heilongjiang Provincial Education Committee, Northeast Agricultural University, Harbin, China; Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China.

ABSTRACT
The larvae of the diamondback moth, Plutella xylostella, cause major economic losses to cruciferous crops, including cabbage, which is an important vegetable crop in China. In this study, we used the mitochondrial COI gene and 11 ISSR markers to characterize the genetic structure and seasonal migration routes of 23 P. xylostella populations in China. Both the mitochondrial and nuclear markers revealed high haplotype diversity and gene flow among the populations, although some degree of genetic isolation was evident between the populations of Hainan Island and other sampling sites. The dominant haplotypes, LX1 and LX2, differed significantly from all other haplotypes both in terms of the number of individuals with those haplotypes and their distributions. Haplotypes that were shared among populations revealed that P. xylostella migrates from the lower reaches of the Yangtze River to northern China and then to northeastern China. Our results also revealed another potential migration route for P. xylostella, i.e., from southwestern China to both northwestern and southern China.

No MeSH data available.