期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：2017
卷号：114
期号：47
页码：12566-12571
DOI：10.1073/pnas.1716181114
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：A naturally occurring Wolbachia strain ( w Anga-Mali) was identified in mosquitoes of the Anopheles gambiae complex collected in the Malian villages of Dangassa and Kenieroba. Phylogenetic analysis of the nucleotide sequence of two 16S rRNA regions showed that w Anga-Mali clusters with Wolbachia strains from supergroup A and has the highest homology to a Wolbachia strain isolated from cat fleas ( Ctenocephalides ). w Anga-Mali is different from two Wolbachia strains previously reported in A. gambiae from Burkina Faso ( w Anga_VK5_STP and w Anga_VK5_3.1a). Quantitative analysis of Wolbachia and Plasmodium sporozoite infection in field-collected mosquitoes indicates that the prevalence and intensity of Plasmodium falciparum sporozoite infection is significantly lower in Wolbachia -infected females. The presence of Wolbachia in females from a laboratory Anopheles coluzzii ( A. gambiae , M form) colony experimentally infected with P. falciparum (NF54 strain) gametocyte cultures slightly enhanced oocyst infection. However, Wolbachia infection significantly reduced the prevalence and intensity of sporozoite infection, as observed in the field. This indicates that w Anga-Mali infection does not limit early stages of Plasmodium infection in the mosquito, but it has a strong deleterious effect on sporozoites and reduces malaria transmission.
