Evidence for the natural occurrence of Wolbachia in Aedes aegypti mosquitoes

被引:38
作者
Balaji, Sivaraman [1 ]
Jayachandran, Seetharaman [2 ]
Prabagaran, Solai Ramatchandirane [1 ]
机构
[1] Bharathiar Univ, Dept Biotechnol, Mol Microbiol Lab, Maruthamalai Main Rd, Coimbatore 641046, Tamil Nadu, India
[2] Pondicherry Univ, Dept Biotechnol, Pondicherry 605014, India
关键词
Wolbachia; Aedes aegypti; 16S rRNA gene; MLST; wAegB; Tetracycline treatment; STRAIN WALBB; DENGUE; ENDOSYMBIONT; DIVERSITY; INFECTION; SEQUENCE;
D O I
10.1093/femsle/fnz055
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Wolbachia, a Gram-negative bacterium, is widely known to be present in arthropods and nematodes. Of late, great impetus is given to employ this intracellular bacterium, as an alternative to conventional biocontrol agents for the control of mosquitoes because of its inherent ability to induce sperm-egg incompatibility, feminisation etc. By employing molecular tools, we have shown the presence of Wolbachia from Aedes aegypti mosquito population collected from Coimbatore, India by PCR amplifying the Ae. aegypti mosquito genome with Wolbachia specific 16S rRNA, wsp and ftsZ gene primers. The phylogenetic analysis of these gene sequences incorporating MLST and GenBank reference sequences has confirmed the occurrence of Wolbachia supergroup B in Ae. aegypti. In addition, qRT-PCR results have shown the dynamics of Wolbachia across the developmental stages of mosquito. The absence of Wolbachia in tetracycline-treated Ae. aegypti mosquitoes evidenced by transmission electron microscopy reinforced our finding conclusively. After confirming their persistence through generations, we have designated Wolbachia from Ae. aegypti as wAegB. In our considered view, wAegB could play a dynamic role in impeding mosquito multiplication and consequently impinging transmission of the dreadful dengue.
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页数:9
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