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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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S. avenae sampling sites in China.
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pone-0109349-g001: S. avenae sampling sites in China.

Mentions: Wingless adults of S. avenae were collected from seven sites across six provinces (Hebei, Shandong, Henan, Shanxi, Jiangsu, and Hubei province) and the Beijing municipality of China. These are the main wheat producing provinces of China. The site locations are presented in Figure 1. The fields, where the S. avenae collected from, are agricultural experiment fields belong to plant protection research stations at Cangxian (Hebei province, China), Liaocheng (Shandong province, China), Xihua (Henan province, China), the Yanhu distriction of Yuncheng (Shanxi province, China), Dongtai (Jiangsu province, China), Zaoyang (Hubei province, China) and the Agricultural Experiment Station of China Agricultural University (Beijing, China), respectively. 30∼40 individuals were collected from each site, and each aphid was taken from a different field in order to minimize resampling of the same clone. Samples that were collected from the same region were considered as one ‘population’. The collected specimens were taken back to the laboratory in 100% ethanol.


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)

S. avenae sampling sites in China.
© Copyright Policy
Related In: Results  -  Collection

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

pone-0109349-g001: S. avenae sampling sites in China.
Mentions: Wingless adults of S. avenae were collected from seven sites across six provinces (Hebei, Shandong, Henan, Shanxi, Jiangsu, and Hubei province) and the Beijing municipality of China. These are the main wheat producing provinces of China. The site locations are presented in Figure 1. The fields, where the S. avenae collected from, are agricultural experiment fields belong to plant protection research stations at Cangxian (Hebei province, China), Liaocheng (Shandong province, China), Xihua (Henan province, China), the Yanhu distriction of Yuncheng (Shanxi province, China), Dongtai (Jiangsu province, China), Zaoyang (Hubei province, China) and the Agricultural Experiment Station of China Agricultural University (Beijing, China), respectively. 30∼40 individuals were collected from each site, and each aphid was taken from a different field in order to minimize resampling of the same clone. Samples that were collected from the same region were considered as one ‘population’. The collected specimens were taken back to the laboratory in 100% ethanol.

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