期刊
JOURNAL OF PHYTOPATHOLOGY-PHYTOPATHOLOGISCHE ZEITSCHRIFT
卷 151, 期 2, 页码 74-79出版社
BLACKWELL VERLAG GMBH
DOI: 10.1046/j.1439-0434.2003.00683.x
关键词
Pyrenophora tritici-repentis; catenarin; antimicrobial activity
A total of 88 Pyrenophora tritici-repentis (Died.) Drechsler isolates from different hosts and localities were screened for catenarin production using thin layer chromatography. Catenarin was detected in 29% of the tested strains. The level of this compound ranged from 2 to 400 ppm and was especially high in case of fungus variants unable to biosynthesize melanins. The extracted pigment exhibited antibiotic properties against Gram-positive bacteria (Aureobacterium liquefaciens , Arthrobacter globiformis , Bacillus brevis , B. circulans , B. subtilis and Curtobacterium plantarum ). Catenarin also inhibited the growth of fungi accompanying P. tritici-repentis during the saprophytic phase of development. The most sensitive species was Epicoccum nigrum, whose growth was inhibited up to 90%.
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