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Genetic diversity of Sitobion avenae (Homoptera: Aphididae) populations from different geographic regions in China.

Xin JJ, Shang QL, Desneux N, Gao XW - PLoS ONE (2014)

Bottom Line: Despite this low genic diversity, the genotypic diversity of the Beijing population was higher than that of all of the other populations, except those from Jiangsu and Shandong.Overall, the genetic divergence among the seven S. avenae populations tested was high, though there was almost no differentiation between the Shandong and Henan populations.We observed significant negative correlation between the strength of gene flow and the geographic distances among populations.

View Article: PubMed Central - PubMed

Affiliation: Department of Entomology, China Agricultural University, Beijing, PR China.

ABSTRACT
Sitobion avenae is a major agricultural pest of wheat in China. Using microsatellite markers, we studied the potential gene flow, genetic diversity, genetic differentiation, and genetic structure of seven S. avenae populations from different regions of China (Beijing, Hebei, Henan, Hubei, Jiangsu, Shandong, and Shanxi provinces). The populations from Henan, Shandong, and Jiangsu showed high levels of genic and genotypic diversity. By contrast, the genic diversity in the Beijing and Hebei populations was much lower. Despite this low genic diversity, the genotypic diversity of the Beijing population was higher than that of all of the other populations, except those from Jiangsu and Shandong. Overall, the genetic divergence among the seven S. avenae populations tested was high, though there was almost no differentiation between the Shandong and Henan populations. We observed significant negative correlation between the strength of gene flow and the geographic distances among populations. Based on genetic analysis, the seven S. avenae populations studied can be divided into four distinct clusters; (i) Hubei, (ii) Shanxi, (iii) Beijing and Hebei, and (iv) Shandong, Henan, and Jiangsu. The present results provide a basis for potentially optimizing integrated pest management (IPM) programs in China, through adapting control methods that target biological traits shared by various populations of the same genotype.

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UPMGA Phylogenetic tree of seven different S. avenae geographic populations in China.
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pone-0109349-g002: UPMGA Phylogenetic tree of seven different S. avenae geographic populations in China.

Mentions: First, we classified the seven geographical populations into three clusters using the UPGMA method (Figure 2): (i) Hubei, (ii) Shanxi, Beijing and Hebei, and (iii) Shandong, Henan, and Jiangsu.


Genetic diversity of Sitobion avenae (Homoptera: Aphididae) populations from different geographic regions in China.

Xin JJ, Shang QL, Desneux N, Gao XW - PLoS ONE (2014)

UPMGA Phylogenetic tree of seven different S. avenae geographic populations in China.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4214629&req=5

pone-0109349-g002: UPMGA Phylogenetic tree of seven different S. avenae geographic populations in China.
Mentions: First, we classified the seven geographical populations into three clusters using the UPGMA method (Figure 2): (i) Hubei, (ii) Shanxi, Beijing and Hebei, and (iii) Shandong, Henan, and Jiangsu.

Bottom Line: Despite this low genic diversity, the genotypic diversity of the Beijing population was higher than that of all of the other populations, except those from Jiangsu and Shandong.Overall, the genetic divergence among the seven S. avenae populations tested was high, though there was almost no differentiation between the Shandong and Henan populations.We observed significant negative correlation between the strength of gene flow and the geographic distances among populations.

View Article: PubMed Central - PubMed

Affiliation: Department of Entomology, China Agricultural University, Beijing, PR China.

ABSTRACT
Sitobion avenae is a major agricultural pest of wheat in China. Using microsatellite markers, we studied the potential gene flow, genetic diversity, genetic differentiation, and genetic structure of seven S. avenae populations from different regions of China (Beijing, Hebei, Henan, Hubei, Jiangsu, Shandong, and Shanxi provinces). The populations from Henan, Shandong, and Jiangsu showed high levels of genic and genotypic diversity. By contrast, the genic diversity in the Beijing and Hebei populations was much lower. Despite this low genic diversity, the genotypic diversity of the Beijing population was higher than that of all of the other populations, except those from Jiangsu and Shandong. Overall, the genetic divergence among the seven S. avenae populations tested was high, though there was almost no differentiation between the Shandong and Henan populations. We observed significant negative correlation between the strength of gene flow and the geographic distances among populations. Based on genetic analysis, the seven S. avenae populations studied can be divided into four distinct clusters; (i) Hubei, (ii) Shanxi, (iii) Beijing and Hebei, and (iv) Shandong, Henan, and Jiangsu. The present results provide a basis for potentially optimizing integrated pest management (IPM) programs in China, through adapting control methods that target biological traits shared by various populations of the same genotype.

Show MeSH
Related in: MedlinePlus