ISHS Acta Horticulturae 823: XI International Symposium on the Processing Tomato
IDENTIFYING THE PATHOGENS CAUSING ANTHRACNOSE OF TOMATO AND PEPPER IN SOUTHERN ONTARIO, CANADA |
| Authors: | J. LeBoeuf, R. Pitblado, P. May |
| Keywords: | Colletotrichum dematium, Colletotrichum coccodes, Solanum lycopersicum, Capsicum annuum |
| Abstract:
Pepper growers in Ontario have been reporting fruit anthracnose as a problem in recent years. In the past, fungicides were seldom required in pepper production in Ontario. Recently, tomato growers have commented on having difficulty in controlling anthracnose, as well. Recent studies in Ohio identified Colletotrichum acutatum as the causal agent in an outbreak of anthracnose affecting both immature and mature pepper fruit in that state. During the growing seasons of 2006 and 2007, we collected samples of tomato and pepper fruit with anthracnose-like lesions in Southwestern Ontario. Fungal colonies were cultured from the fruit lesions and sent for identification using the Microbial ID Test using 16S/18S rRNA Gene Sequencing Method (Laboratory Services, University of Guelph, Guelph, ON). C. dematium was the only Colletotrichum species identified from pepper fruit lesions, while both C. dematium and C. coccodes were identified from tomato fruit lesions. C. acutatum was not isolated from any of the lesions collected from Ontario. Further research is needed to determine the implications of these findings. | |
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