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Genetic and host-associated differentiation within Thrips tabaci Lindeman (Thysanoptera: Thripidae) and its links to Tomato spotted wilt virus-vector competence

journal contribution
posted on 2023-05-17, 17:53 authored by Westmore, GC, Poke, FS, Geoff AllenGeoff Allen, Calum WilsonCalum Wilson
Of eight thelytokous populations of onion thrips (Thrips tabaci) collected from potato (three populations), onion (four) or Chrysanthemum (one) hosts from various regions of Australia, only those from potato were capable of transmitting Tomato spotted wilt virus (TSWV) in controlled transmission experiments. Genetic differentiation of seven of these eight populations, and nine others not tested for TSWV vector competence, was examined by comparison of the DNA sequences of mitochondrial cytochrome oxidase subunit 1 (COI) gene. All Australian populations of T. tabaci grouped within the European 'L2' clade of Brunner et al. (2004). Within this clade the seven populations from potato, the three from onion, and the four from other hosts (Chrysanthemum, Impatiens, lucerne, blackberry nightshade) clustered as three distinct sub-groupings characterised by source host. Geographical source of thrips populations had no influence on genetic diversity. These results link genetic differentiation of thelytokous T. tabaci to source host and to TSWV vector capacity for the first time.

Funding

Australian Research Council

McCain Foods Limited

History

Publication title

Heredity

Volume

111

Pagination

210-215

ISSN

0018-067X

Department/School

Tasmanian Institute of Agriculture (TIA)

Publisher

Nature Publishing Group

Place of publication

Macmillan Building, 4 Crinan St, London, England, N1 9Xw

Rights statement

Copyright 2013 Macmillan Publishers Limited

Repository Status

  • Restricted

Socio-economic Objectives

Field grown vegetable crops

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    University Of Tasmania

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