Parallel infection of Japanese encephalitis virus and Wolbachia within cells of mosquito salivary glands.
The endosymbiont Wolbachia usually causes cytoplasmic incompatibility in dipteran hosts, including mosquitoes. However, some important arbovirus-transmitting mosquitoes such as Aedes aegypti (L.) are not heritably infected by Wolbachia. In Wolbachia-harboring mosquito Armigeres subalbatus Coquillett, colocalization of Wolbachia and inoculated Japanese encephalitis virus (family Flaviviridae, genus Flavivirus, JEV) in salivary gland (SG) cells was shown by electron microscopy. The infection rate of JEV in SGs, detected with either immunofluorescent antibody test or reverse transcription-polymerase chain reaction, did not show significant differences between Wolbachia-infected and -free colonies. It is suggested that Wolbachia did not mediate resistance of SG cells to superinfection by JEV, although both microorgamisms coexist in the same niche, i.e., the same SG cell. Therefore, a SG escape barrier may not be elevated due to Wolbachia infection, which presumably has no deleterious effects on vector competence in Wolbachia-harboring mosquitoes.
Tsai
Kun-Hsien
KH
Department of Public Health and Parasitology, Chang Gung University, Kwei-San, Tao-Yuan 33332, Taiwan.
Huang
Chin-Gi
CG
Wu
Wen-Jer
WJ
Chuang
Chin-Kai
CK
Lin
Chiu-Chun
CC
Chen
Wei-June
WJ
D000818:Animals; D009033:Culicidae / Q000382:microbiology* / Q000821:virology*; D003593:Cytoplasm / Q000382:microbiology; D017931:DNA Primers / Q000737:chemistry; D004664:Encephalitis Virus, Japanese / Q000302:isolation & purification*; D005260:Female; D019084:Fluorescent Antibody Technique, Indirect / Q000379:methods; D020133:Reverse Transcriptase Polymerase Chain Reaction / Q000379:methods; D012469:Salivary Glands / Q000382:microbiology / Q000648:ultrastructure / Q000821:virology; D013997:Time Factors; D020577:Wolbachia / Q000302:isolation & purification*
D017931:DNA Primers