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Title: Production of antioomycete compounds active against the phytopathogens Phytophthora sojae and Aphanomyces cochlioides by clavicipitoid entomopathogenic fungi
Authors: Sastia Prama Putri
Kei ichi Ishido
Hiroshi Kinoshita
Shigeru Kitani
Fumio Ihara
Yasuko Sakihama
Yasuhiro Igarashi
Takuya Nihira
Osaka University
Institute of Fruit Tree and Tea Science, NARO
Toyama Prefectural University
Hokkaido University
Mahidol University
Keywords: Biochemistry, Genetics and Molecular Biology;Chemical Engineering;Immunology and Microbiology
Issue Date: 1-Jan-2014
Citation: Journal of Bioscience and Bioengineering. Vol.117, No.5 (2014), 557-562
Abstract: A total of 412 strains belonging to 14 genera of clavicipitoid entomopathogenic fungi (EPF) were screened for activities against two economically important plant pathogenic oomycetes, Phytophthora sojae and Aphanomyces cochlioides. To identify the antioomycete compounds produced by EPF, the extracts of 13 highly active EPF strains were characterized in detail by high performance liquid chromatography with diode array detection and high-resolution mass spectrometric detection and antioomycete assay. The antioomycete activity of several Metarhizium extracts was associated with previously isolated aurovertins, fungerin, N-(methyl-3-oxodec-6-enoyl)-2-pyrroline, and N-(methyl-3-oxodecanoyl)-2-pyrroline. The depsipeptide beauvericin was confirmed to be one of the active principles of three strains of Isaria tenuipes, which strongly inhibited mycelial growth of both P.sojae and A.cochlioides. Two known bioactive metabolites, paecilosetin and aranorosinol A, together with a novel and potent antioomycete compound, farinomalein, were isolated from the extracts of Isaria farinosa and all compounds were confirmed to have antioomycete activity. Identification of 8 antioomycete compounds from 13 clavicipitioid EPF demonstrated a new potential use of EPF as a source of compounds for the control of soil-borne plant pathogenic oomycetes. © 2013 The Society for Biotechnology, Japan.
ISSN: 13474421
Appears in Collections:Scopus 2011-2015

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