Reduced BYDV-PAV transmission by the grain aphid in a Triticum monoccum line

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 transmiss...

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Bibliographic Details
Published inEuropean journal of plant pathology Vol. 123; no. 3; pp. 281 - 289
Main Authors Tanguy, Sylvie, Dedryver, Charles-Antoine
Format Journal Article
LanguageEnglish
Published Springer Verlag 2009
Subjects
Life Sciences
Vegetal Biology
BYDV-PAV
INOCULATION
ANTIBIOSIS
ACQUISITION
SITOBION AVENAE
LUTEOVIRIDAE
WHEAT
APHID
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Summary: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
ISSN:0929-1873
1573-8469
DOI:10.1007/s10658-008-9365-3