Diversity of symbiotic bacteria associated with Bemisia tabaci (Homoptera: Aleyrodidae) in cassava mosaic disease pandemic areas of Tanzania

L. S. Tajebe, D. Guastella, V. Cavalieri, S. E. Kelly, Martha S Hunter, O. S. Lund, J. P. Legg, C. Rapisarda

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

All Bemisia tabaci individuals harbour an obligate bacterial symbiont (Portiera aleyrodidarum), and many also harbour non-essential facultative symbionts. The association of symbiotic bacteria with the various genetic groups of B. tabaci remains unknown for East Africa. This study aimed to assess any association between the various whitefly genetic groups and the endosymbionts they harbour; to investigate if a unique endosymbiont is associated with super-abundant whiteflies, and to provide baseline information on endosymbionts of whiteflies for a part of East Africa. Whiteflies collected during surveys in Tanzania were genotyped and screened for the presence of the obligate and six secondary symbionts (SS): Rickettsia (R), Hamiltonella (H), Arsenophonus (A), Wolbachia (W), Cardinium (C) and Fritschea (F). The results revealed the presence of Mediterranean (MED), East Africa 1 (EA1), Indian Ocean (IO) and Sub-Saharan Africa 1 (SSA1) genetic groups of Bemisia tabaci, with SSA1 further clustered into four sub-groups: SSA1-SG1, SSA1-SG2, SSA1-SG1/2 and SSA1-SG3. F was completely absent from all of the whiteflies tested while R was always found in double or multiple infections. In general, no particular symbiont appeared to be associated with the super-abundant SSA1-SG1 B. tabaci, although A or AC infections were common among infected individuals. The most striking feature of these super-abundant whiteflies, dominating cassava mosaic disease pandemic areas, was the high prevalence of individuals uninfected by any of the six SS tested. This study of the endosymbionts of B. tabaci in East Africa showed contrasting patterns of infection in crop and weed hosts.

Original languageEnglish (US)
Pages (from-to)297-310
Number of pages14
JournalAnnals of Applied Biology
Volume166
Issue number2
DOIs
StatePublished - Mar 1 2015

Fingerprint

Bemisia tabaci
pandemic
Sub-Saharan Africa
Aleyrodidae
Tanzania
Homoptera
cassava
symbionts
endosymbionts
Eastern Africa
bacteria
Arsenophonus
infection
weed hosts
Rickettsia
Wolbachia
Indian Ocean
crops

Keywords

  • East Africa
  • genetic groups
  • host plants
  • secondary symbionts
  • whitefly

ASJC Scopus subject areas

  • Agronomy and Crop Science

Cite this

Diversity of symbiotic bacteria associated with Bemisia tabaci (Homoptera : Aleyrodidae) in cassava mosaic disease pandemic areas of Tanzania. / Tajebe, L. S.; Guastella, D.; Cavalieri, V.; Kelly, S. E.; Hunter, Martha S; Lund, O. S.; Legg, J. P.; Rapisarda, C.

In: Annals of Applied Biology, Vol. 166, No. 2, 01.03.2015, p. 297-310.

Research output: Contribution to journalArticle

Tajebe, L. S. ; Guastella, D. ; Cavalieri, V. ; Kelly, S. E. ; Hunter, Martha S ; Lund, O. S. ; Legg, J. P. ; Rapisarda, C. / Diversity of symbiotic bacteria associated with Bemisia tabaci (Homoptera : Aleyrodidae) in cassava mosaic disease pandemic areas of Tanzania. In: Annals of Applied Biology. 2015 ; Vol. 166, No. 2. pp. 297-310.
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