Weed species in tomato production and their role as alternate hosts of 'Tomato spotted wilt virus' and its vector 'Frankliniella occidentalis'

Title
Weed species in tomato production and their role as alternate hosts of 'Tomato spotted wilt virus' and its vector 'Frankliniella occidentalis'
Publication Date
2016
Author(s)
Macharia, Isaac
Backhouse, David
( author )
OrcID: https://orcid.org/0000-0003-0663-6002
Email: dbackhou@une.edu.au
UNE Id une-id:dbackhou
Wu, Shubiao
( author )
OrcID: https://orcid.org/0000-0002-1790-6015
Email: swu3@une.edu.au
UNE Id une-id:swu3
Ateka, Elijah Miinda
Type of document
Journal Article
Language
en
Entity Type
Publication
Publisher
Wiley-Blackwell Publishing Ltd
Place of publication
United Kingdom
DOI
10.1111/aab.12297
UNE publication id
une:19627
Abstract
'Tomato spotted wilt virus' (TSWV) is an important plant virus that infects a wide range of hosts including weeds making its management difficult. A survey was undertaken to establish the occurrence of weed species in tomato production systems in Kenya and their role as hosts of TSWV and its vectors. Selected weed species were further evaluated for their reaction to TSWV, transmission efficiency by 'Frankliniella occidentalis' and ability to support thrips reproduction. Of the 43 weed species identified in the field, 29 species had been reported as hosts of TSWV, twowere non-hosts and 11 had no record of their status. Among the more common species, 'Amaranthus hybridus', 'Solanum nigrum', 'Tagetes minuta' and 'Datura stramonium' were susceptible to the virus and supported high levels of thrips reproduction. The TSWV could not be transmitted to 'Galinsoga parviflora' and 'Sonchus oleraceus' by 'F. occidentalis' despite them being highly susceptible in mechanical transmission tests. There was a significant correlation between feeding damage and number of larvae of 'F. occidentalis' on different weeds. Occurrence of weeds that support thrips reproduction and are good hosts of TSWV is a clear indicator of their role in epidemiology and the importance of their management for disease control.
Link
Citation
Annals of Applied Biology, 169(2), p. 224-235
ISSN
1744-7348
0003-4746
Start page
224
End page
235

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