Open AccessDistribution in Australia and Seed Transmission ofTobacco streak virusinParthenium hysterophorus
Author(s) -
Murray Sharman,
D. M. Persley,
J. E. Thomas
Publication year - 2009
Publication title -
plant disease
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.663
H-Index - 108
eISSN - 1943-7692
pISSN - 0191-2917
DOI - 10.1094/pdis-93-7-0708
Subject(s) - parthenium hysterophorus , biology , weed , transmission (telecommunications) , crop , agronomy , botany , horticulture , electrical engineering , engineering
Tobacco streak virus (TSV) was found to commonly occur in Parthenium hysterophorus, as symptomless infections, in central Queensland, Australia across a large area infested with this weed. Several isolates of TSV collected across the geographic range of P. hysterophorus were found to share identical coat protein sequence with each other and with TSV from crop plants in the same area. Seed transmission of TSV in P. hysterophorus was found to occur at rates of 6.8 to 48%. There was almost no change in the rate of TSV seed transmission when P. hysterophorus seed was stored for up to 24½ months. Implications of this relationship between TSV and P. hysterophorus for the development of virus disease epidemics in surrounding crops are discussed.