摘要
[目的]以五倍子蚜、杨树瘿蚜和黄连木瘿蚜等9种瘿蚜为实验材料,探讨瘿蚜Wolbachia与其它自由生活蚜虫携带的Wolbachia的株系差异及亲缘关系,明确五倍子蚜、杨树瘿蚜和黄连木瘿蚜等9种瘿蚜的Wolbachia感染情况、株系及系统发育关系。[方法]从田间采集新鲜虫瘿,将蚜虫转移到离心管内,100%乙醇-20℃保存。采用Wolbachia的16S rRNA、wsp、fts Z、gro E和glt A基因引物,以瘿蚜的总DNA为模板进行扩增、测序和分析,联合NCBI中Wolbachia 16S rRNA相关基因序列进行系统发育分析。[结果]在检测的9种瘿蚜中,有3种瘿蚜共3个种群感染有Wolbachia,其中滇叶瘿绵蚜昆明种群的Wolbachia属于B超群,肚倍蚜昆明种群和角倍蚜峨眉种群的Wolbachia可能属于新发现的O超群。[结论]与自由生活的蚜虫相比,瘿蚜的Wolbachia感染率偏低,且株系间的差异较大。
[Objective]To determine the infection and phylogenetic relationships of Wolbachia in nine gall aphids hosted on Rhus spp.,Populus yunnanensis and Pistacia chinensis. [Method]Fresh aphid galls were collected in the field and transferred the aphids to an Eppendorf tube,and placed in 100% ethanol then deposited in-20℃. The genomic DNA was amplified and sequenced using the primers of 16 S rRNA,wsp,fts Z,gro E and glt A genes. The phylogenetic relationships were analysis using Wolbachia 16 S rRNA gene sequences and relevant gene sequences from NCBI. [Result]Three species among the nine gall aphids species were infected with Wolbachia. The strain from Pemphigus yunnanensis of Kunming population belongs to B supergroup,and strain from Kaburagia rhusicola of Kunming population and Schlechtendalia chinensis of Emei population belong to O supergroup. [Conclusion]Compared with the free-living aphids,Wolbachia infected in gall aphids have low infection rates and significant differences among strains.
引文
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