HELPER-DEPENDENT VECTOR TRANSMISSION OF PLANT VIRUSES

Autor: Stéphane Blanc, Thomas P. Pirone
Rok vydání: 1996
Předmět:
Zdroj: Annual Review of Phytopathology. 34:227-247
ISSN: 1545-2107
0066-4286
DOI: 10.1146/annurev.phyto.34.1.227
Popis: ▪ Abstract A variety of noncirculatively transmitted viruses have evolved a vector transmission strategy that involves, in addition to virions, virus-encoded proteins that are not constituents of virions. These “helpers” and the genes encoding them have been characterized for viruses in the genera Potyvirus and Caulimovirus. Several lines of evidence support the hypothesis that these helpers act by mediating retention of virions in regions of the vector's alimentary tract from which they subsequently can be egested to initiate an infection. The possible advantage this convergently evolved strategy could confer to noncirculatively transmitted virus quasispecies is discussed.
Databáze: OpenAIRE