Morphological and molecular discrimination of Colletotrichum truncatum causing anthracnose on lentil in Canada

Abstract

Colletotrichum truncatum is an important exotic pathogen threat to the Australian lentil industry. Canadian isolates of C. truncatum from lentil were assessed for morphological and molecular differences against Australian and international isolates of C. truncatum from hosts other than lentil and other Colletotrichum species. Although similar in dimension, conidiospores from lentil C. truncatum were ellipsoidal and those from C. truncatum originating from Australian Glycine max, Xanthium occidentale and Arachis hypogaea were falcate in shape. Conidiospores of Australian C. trifolii, C. gloeosporioides and C. destructivum were cylindrical. Molecular analysis, using both RAPD markers and 18-25..