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The Scientific World Journal
Volume 2013, Article ID 607102, 6 pages
http://dx.doi.org/10.1155/2013/607102
Research Article

The Elicitation Effect of Pathogenic Fungi on Trichodermin Production by Trichoderma brevicompactum

1Institute of Insect Science, Zhejiang University, Hangzhou, Zhejiang 310058, China
2College of Life Science, China Jiliang University, Zhejiang Provincial Key Laboratory of Biometrology and Inspection & Quarantine, Hangzhou, Zhejiang 310018, China

Received 31 October 2013; Accepted 19 November 2013

Academic Editors: A. Bekatorou, A. Geng, and C. R. C. Calado

Copyright © 2013 Xu-Ping Shentu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The effects of six species of phytopathogenic fungi mycelia as elicitors on trichodermin yield by Trichoderma brevicompactum were investigated. Neither nonviable nor viable mycelia of Botrytis cinerea, Alternaria solani, Colletotrichum lindemuthianum, and Thanatephorus cucumeris demonstrated any elicitation on the accumulation of trichodermin. However, the production of trichodermin was increased by the presence of viable/nonviable Rhizoctonia solani and Fusarium oxysporum mycelia. The strongest elicitation effect was found at the presence of nonviable R. solani. At the presence of nonviable R. solani, the maximum yield of trichodermin (144.55 mg/L) was significantly higher than the Control (67.8 mg/L), and the cultivation time to obtain the maximum yield of trichodermin decreased from 72 h to 60 h. No difference of trichodermin accumulation was observed by changing the concentration of nonviable R. solani from 0.1 to 1.6 g/L. It was observed that the optimum time for adding nonviable R. solani is immediately after inoculation. The diameter of T. brevicompactum mycelial globule after 72 h cultivation with nonviable R. solani elicitor was smaller than that of the Control.