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Role of acquisition and inoculation time in the expression of clonal variation for BYDV‐PAV transmission in the aphid species Rhopalosiphum padi
Author(s) -
SADEGHI E.,
DEDRYVER C. A.,
GAUTHIER J. P.
Publication year - 1997
Publication title -
plant pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.928
H-Index - 85
eISSN - 1365-3059
pISSN - 0032-0862
DOI - 10.1046/j.1365-3059.1997.d01-39.x
Subject(s) - rhopalosiphum padi , biology , aphid , luteovirus , vector (molecular biology) , barley yellow dwarf , inoculation , transmission (telecommunications) , aphididae , serotype , virology , horizontal transmission , virus , plant virus , botany , genetics , horticulture , homoptera , pest analysis , gene , recombinant dna , engineering , electrical engineering
Vector efficiency of 20 Rhopalosiphum padi clones, originating from Europe, North America and North Africa and exhibiting different types of life cycle, was evaluated by transmitting a French BYDV‐PAV isolate to barley plants under five different acquisition/inoculation sequences (AAP/IAP). Differences between clones in transmission efficiency were found only when a short AAP was followed by a long IAP (6 h/120 h) and, to some extent, when a long AAP (48 h) was followed by a short IAP (6 h), but no differences were found when the conditions for virus transmission were optimal, i.e. long AAP followed by long IAP (48 h/120 h). There were no differences in transmission rates by clones of different geographical origins and with different life cycles. As a consequence, clonal variation is probably of little importance in the vector aspects of the epidemiology of PAV serotypes transmitted by R. padi , but the availability of a range of clones exhibiting transmission differences under limiting AAP or IAP conditions could be of interest for studies of virus–vector relationships.