title: Factors affecting population dynamics of maternally transmitted endosymbionts in Bemisia tabaci.
abstract: While every individual of Bemisia tabaci (Hemiptera: Aleyrodidae) harbors the primary symbiont (P-symbiont) Portiera, the infection frequencies of the six secondary symbionts (S-symbionts) including Hamiltonella, Arsenophonus, Cardinium, Wolbachia, Rickettsia and Fritschea vary greatly among different populations. To characterize the factors influencing the infection dynamics of the six S-symbionts in B. tabaci, gene-specific PCR were conducted to screen for the presence of the P-symbiont Portiera and the six S-symbionts in 61 (17 B and 44 Q biotypes) field populations collected from different plant species and locations in China. All individuals of the 61 populations hosted the P-symbiont Portiera, but none of them harbored Arsenophonus and Fritschea. The presence and infection rates of Hamiltonella, Cardinium, Rickettsia, Wolbachia and their co-infections Rickettsia + Hamiltonella (RH), Rickettsia + Cardinium (RC), Hamiltonella + Cardinium (HC) and Rickettsia + Hamiltonella + Cardinium (RHC) varied significantly among the 61 field populations; and the observed variations can be explained by biotypes, sexes, host plants and geographical locations of these field populations. Taken together, at least three factors including biotype, host plant and geographical location affect the infection dynamics of S-symbionts in B. tabaci.
authors.affiliation: Department of Plant Protection, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China.
authors.forename: Huipeng
authors.initials: H
authors.lastname: Pan
authors.forename: Xianchun
authors.initials: X
authors.lastname: Li
authors.forename: Daqing
authors.initials: D
authors.lastname: Ge
authors.forename: Shaoli
authors.initials: S
authors.lastname: Wang
authors.forename: Qingjun
authors.initials: Q
authors.lastname: Wu
authors.forename: Wen
authors.initials: W
authors.lastname: Xie
authors.forename: Xiaoguo
authors.initials: X
authors.lastname: Jiao
authors.forename: Dong
authors.initials: D
authors.lastname: Chu
authors.forename: Baiming
authors.initials: B
authors.lastname: Liu
authors.forename: Baoyun
authors.initials: B
authors.lastname: Xu
authors.forename: Youjun
authors.initials: Y
authors.lastname: Zhang
mesh_terms: D000818:Animals; D041963:Bacteroidetes / Q000378:metabolism*; D002681:China; D017931:DNA Primers / Q000235:genetics; D014644:Genetic Variation; D005843:Geography; D006430:Hemiptera / Q000378:metabolism / Q000382:microbiology*; D007313:Insecta; D008957:Models, Genetic; D016133:Polymerase Chain Reaction / Q000379:methods; D011157:Population Dynamics; D012281:Rickettsia / Q000378:metabolism*; D013045:Species Specificity; D013559:Symbiosis; D020577:Wolbachia / Q000378:metabolism*
chemical_list: D017931:DNA Primers