Factors affecting population dynamics of maternally transmitted endosymbionts in Bemisia tabaci.

Factors affecting population dynamics of maternally transmitted endosymbionts in Bemisia tabaci.
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影响烟粉虱母源性内共生菌种群动态的因素

DOI:
10.1371/journal.pone.0030760
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发表时间:
2012
期刊:
影响因子:
3.7
通讯作者:
Zhang Y
Zhang Y
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Pan H;Li X;Ge D;Wang S;Wu Q;Xie W;Jiao X;Chu D;Liu B;Xu B;Zhang Y

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虽然烟粉虱(半翅目:粉粉虱科)的每个个体都携带有初级共生体(P-共生体)Portiera,但汉密尔顿氏菌、Arsenophonus、Cardinium、沃尔巴克氏体、立克次体和弗里茨氏体等六种次要共生体(S-共生体)的感染频率在不同种群之间存在很大差异。为了表征烟粉虱中六种 S 共生体感染动态的影响因素,我们进行了基因特异性 PCR 筛选从中国不同植物物种和地点收集的 61 个(17 B 和 44 Q 生物型)田间群体中 P 共生体 Portiera 和 6 种 S 共生体的存在。 61 个种群中的所有个体都寄生有 P 共生体 Portiera,但没有一个寄生有 Arsenophonus 和 Fritschea。 61个野外人群中,汉密尔顿氏菌、卡迪氏菌、立克次体、沃尔巴克氏体及其混合感染立克次氏体+汉密尔顿氏菌(RH)、立克次氏体+卡迪氏菌(RC)、汉密尔顿氏菌+卡迪氏菌(HC)和立克次氏体+汉密尔顿氏菌+卡迪氏菌(RHC)的存在和感染率存在显着差异;观察到的变化可以通过这些田间种群的生物型、性别、寄主植物和地理位置来解释。综上所述,至少生物型、寄主植物和地理位置三个因素影响烟粉虱中S-共生体的感染动态。
While every individual of Bemisia tabaci (Hemiptera: Aleyrodidae) harbors the primary symbiont (P-symbiont) Portiera, the infection frequencies of the six secondary symbionts (S-symbionts) including Hamiltonella, Arsenophonus, Cardinium, Wolbachia, Rickettsia and Fritschea vary greatly among different populations. To characterize the factors influencing the infection dynamics of the six S-symbionts in B. tabaci, gene-specific PCR were conducted to screen for the presence of the P-symbiont Portiera and the six S-symbionts in 61 (17 B and 44 Q biotypes) field populations collected from different plant species and locations in China. All individuals of the 61 populations hosted the P-symbiont Portiera, but none of them harbored Arsenophonus and Fritschea. The presence and infection rates of Hamiltonella, Cardinium, Rickettsia, Wolbachia and their co-infections Rickettsia + Hamiltonella (RH), Rickettsia + Cardinium (RC), Hamiltonella + Cardinium (HC) and Rickettsia + Hamiltonella + Cardinium (RHC) varied significantly among the 61 field populations; and the observed variations can be explained by biotypes, sexes, host plants and geographical locations of these field populations. Taken together, at least three factors including biotype, host plant and geographical location affect the infection dynamics of S-symbionts in B. tabaci.
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发表时间: 2009-08-01
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