Applied and Environmental Microbiology (1998) 64, 133-137

Alan Castle, Donna Speranzini, Nezar Rghei, Glen Alm, Dan Rinker and John Bissett (1998)
Morphological and molecular identification of Trichoderma isolates on North American mushroom farms
Applied and Environmental Microbiology 64 (1), 133-137
Abstract: Green mold disease (causal agent, Trichoderma) has resulted in severe crop losses on mushroom farms worldwide in recent years. We analyzed 160 isolates of Trichoderma from mushroom farms for morphological, cultural, and molecular characteristics and classified these isolates into phenotypic groups. The most common group comprised approximately 40% of the isolates and was identified as a strain of Trichoderma harzianum. This group was consistently recovered from farms with severe green mold disease but not from farms with little or no problem. In addition, the strain identified as the major cause of green mold disease in Ireland and the United Kingdom grouped with these North American isolates in having very similar randomly amplified polymorphic DNA patterns.
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Database assignments for author(s): Alan J. Castle

Research topic(s) for pests/diseases/weeds:
surveys/sampling/distribution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Trichoderma harzianum	Mushrooms	Ireland
	Trichoderma harzianum	Mushrooms	United Kingdom
	Trichoderma harzianum	Mushrooms	Canada (east)
	Trichoderma harzianum	Mushrooms	U.S.A. (NE)
	Trichoderma harzianum	Mushrooms	Canada (west)
	Trichoderma koningii
	Trichoderma atroviride