Skip to main content

In vitro antagonism of Trichoderma and naturally occurring fungi from elms against Ophiostoma novo‐ulmi

Buy Article:

$51.00 plus tax (Refund Policy)



The antagonist ability of four fungal endophytes isolated from elms (Trichoderma atroviride GF13, Diaporthe eres GF2, Diplodia ulmi GF5 and Alternaria alternata GF6) and two fungi from a collection (Trichoderma harzianum and Trichoderma virens) was evaluated against six strains of Ophiostoma novo‐ulmi (1, 10, 19, 32, 43 and O‐Va), the causal agent of Dutch elm disease. Dual culture tests were established in PDA and MA culture media to test the interactions between pathogenic fungi and potential antagonist ones. The fungi showed varying levels of antagonist capacity against O. novo‐ulmi. Among them, T. atroviride and T. harzianum had the greatest inhibiting effect (around 50%). Culture filtrates and previously inoculated cellophane discs from T. harzianum and Tatroviride also caused growth inhibition of Onovo‐ulmi, with less intensity in strains 10 and 19. The control mechanisms involved in the process were competition, mycoparasitism and the production of soluble and diffusible antifungal metabolites. The new isolate Tatroviride GF13 was efficient as antagonist. It showed antagonist ability against non‐elm‐derived fungi such as Verticillium, Fusarium, Aspergillus, Rhizopus and Penicillium. These results suggest interesting application possibilities in the biological control of Dutch elm disease.

Document Type: Research Article


Publication date: February 1, 2013


Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more
Real Time Web Analytics