Influence of Temperature on Symbiotic Bacterium Composition in Successive Generations of Egg Parasitoid, Anagrus nilaparvatae

文献类型： 外文期刊

第一作者： Wang Xin

作者： Wang Xin;Xu Hong-xing;Liu Shu-ping;Tang Jiang-wu;Zheng Xu-song;Lv Zhong-xian

作者机构：

关键词： temperature;Anagrus nilaparvatae;Wolbachia;bacterial community;polymerase chain reaction-denaturing gradient gel electrophoresis;rice;brown planthopper

期刊名称：RICE SCIENCE （ 影响因子：3.333； 五年影响因子：4.226 ）

ISSN： 1672-6308

年卷期： 2016 年 23 卷 4 期

页码：

收录情况： SCI

摘要： Anagrus nilaparvatae is the dominant egg parasitoid of rice planthoppers and plays an important role in biological control. Symbiotic bacteria can significantly influence the development, survival, reproduction and population differentiation of their hosts. To study the influence of temperature on symbiotic bacterial composition in the successive generations of A. nilaparvatae, A. nilaparvatae were raised under different constant temperatures of 22 degrees C, 25 degrees C, 28 degrees C, 31 degrees C and 34 degrees C. Polymerase chain reaction-denaturing gradient gel electrophoresis was used to investigate the diversity of symbiotic bacteria. Our results revealed that the endophytic bacteria of A. nilaparvatae were Pantoea sp., Pseudomonas sp. and some uncultured bacteria. The bacterial community composition in A. nilaparvatae significantly varied among different temperatures and generations, which might be partially caused by temperature, feeding behavior and the physical changes of hosts. However, the analysis of wsp gene showed that the Wolbachia in A. nilaparvatae belonged to group A, sub-group Mors and sub-group Dro. Sub-group Mors was absolutely dominant, and this Wolbachia composition remained stable in different temperatures and generations, except for the 3rd generation under 34 degrees C during which sub-group Dro became the dominant Wolbachia. The above results suggest that the continuous high temperature of 34 degrees C can influence the Wolbachia community composition in A. nilaparvatae.

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