Identification of a gene product induced by hard-surface contact of Colletotrichum gloeosporioides conidia as a ubiquitin-conjugating enzyme by yeast complementation.

ABSTRACT: The germinating conidia of many phytopathogenic fungi on hosts must differentiate into an infection structure called the appressorium in order to penetrate their hosts. Chemical signals, such as the host's surface wax or fruit ripening hormone, ethylene, trigger germination and appressorium formation of the avocado pathogen Colletotrichum gloeosporioides only after the conidia are in contact with a hard surface. What role this contact plays is unknown. Here, we describe isolation of genes expressed during the early stage of hard-surface treatment by a differential-display method and report characterization of one of these cloned genes, chip1 (Colletotrichum hard-surface induced protein 1 gene), which encodes a ubiquitin-conjugating enzyme. RNA blots clearly showed that it is induced by har

SUBMITTER: Liu ZM 

PROVIDER: S-EPMC107327 | biostudies-literature | 1998 Jul

REPOSITORIES: biostudies-literature