European Journal of Plant Pathology (2009) 123, 281-289

S. Tanguy and C.-A. Dedryver (2009)
Reduced BYDV-PAV transmission by the grain aphid in a Triticum monococcum line
European Journal of Plant Pathology 123 (3), 281-289
Abstract: The luteovirus Barley yellow dwarf virus-PAV (BYDV-PAV) and its vector, the aphid Sitobion avenae are two major sources of yield losses in cereal crops. We report in this paper the effects of a Triticum monococcum line (TM44), resistant by antibiosis to S. avenae, on the different steps of transmission of one BYDV-PAV isolate by the aphids. First, it was shown that TM44 is strongly resistant to BYDV-PAV transmission, but exclusively when S. avenae is the vector. Second, that TM44 is resistant (1) to BYDV-PAV acquisition by S. avenae and (2) to its inoculation, whatever the respective duration of these two periods. Third, that both resistances have partially additive effects. In the discussion, several lines of evidence are given to support the hypothesis that resistance of TM44 to PAV transmission is due to the same disturbances to S. avenae feeding behaviour that are involved in its antibiosis against this aphid species. Reasons for caution in releasing resistant material in the field are presented.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: English)
Link to article at publishers website
Database assignments for author(s): Charles-Antoine Dedryver

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host
transmission/dispersal of plant diseases

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Luteovirus pavhordei	Wheat (Triticum)
	Sitobion avenae	Wheat (Triticum)