NOTE] Antifungal Activity of Extracellular Hydrolases Produced by Autolysing Aspergillus nidulans Cultures

Melinda Szilágyi; Fruzsina Anton; Katalin Forgács; Jae-Hyuk Yu; István Pócsi; Tamás Emri

doi:10.1007/s12275-012-2001-0

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Research Support, Non-U.S. Gov't
NOTE] Antifungal Activity of Extracellular Hydrolases Produced by Autolysing Aspergillus nidulans Cultures: Melinda Szilágyi ¹, Fruzsina Anton ¹, Katalin Forgács ¹, Jae-Hyuk Yu ², István Pócsi ¹, Tamás Emri ¹; Journal of Microbiology 2012;50(5):849-854.
DOI: https://doi.org/10.1007/s12275-012-2001-0
Published online: November 4, 2012

¹Department of Microbial Biotechnology and Cell Biology, Faculty of Science and Technology, University of Debrecen, Debrecen, Hungary, ²Departments of Bacteriology and Genetics, University of Wisconsin, Madison, WI, USA

Corresponding author: Tamás Emri , Tel: +36-52-512925,

Received: 2 January 2012 • Accepted: 14 May 2012

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Abstract

Carbon-starving Aspergillus nidulans cultures produce high activities of versatile hydrolytic enzymes and, among these, ChiB endochitinase and EngA β-1,3-endoglucanase showed significant antifungal activity against various fungal species. Double deletion of engA and chiB diminished the antifungal activity of the fermentation broths and increased conidiogenesis and long-term viability of A. nidulans, but decreased the growth rate on culture media containing weak carbon sources. Production of ChiB and EngA can influence fungal communities either directly due to their antifungal properties or indirectly through their effects on vegetative growth. Our data suggest saprophytic fungi as promising future candidates to develop novel biocontrol technologies.

Keywords: antifungal activity;A. nidulans;chitinase;β-1;3-glucanase;proteinase

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NOTE] Antifungal Activity of Extracellular Hydrolases Produced by Autolysing Aspergillus nidulans Cultures

J. Microbiol. 2012;50(5):849-854. Published online November 4, 2012

DOI: https://doi.org/10.1007/s12275-012-2001-0

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