Open AccessAerial Transmission of Thielaviopsis basicola, a Pathogen of Corn-Salad, by Adult Shore Flies
Author(s) -
M. E. Stanghellini,
S. L. Rasmussen,
D H Kim
Publication year - 1999
Publication title -
phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.264
H-Index - 131
eISSN - 1943-7684
pISSN - 0031-949X
DOI - 10.1094/phyto.1999.89.6.476
Subject(s) - biology , pathogen , frass , chlamydospore , propagule , larva , botany , horticulture , fungus , microbiology and biotechnology
Chlamydospores of Thielaviopsis basicola were consistently observed in frass excreted by adults and larvae of shore flies that were collected in the immediate vicinity of naturally infected corn-salad plants obtained from a commercial greenhouse production facility. Approximately 95% of the adult flies and 85% of the larvae were internally infested with the pathogen. Pathogen-free adult shore flies were subsequently shown to acquire the pathogen by ingestion after feeding on naturally infected plants. Viable propagules of the pathogen were excreted by these internally infested adults and were capable of transmitting the pathogen to healthy seedlings, which subsequently became infected.