期刊
AQUATIC MICROBIAL ECOLOGY
卷 50, 期 3, 页码 251-259出版社
INTER-RESEARCH
DOI: 10.3354/ame01167
关键词
algicidal bacteria; antagonism; CFB complex; Karenia brevis; microbial interactions
A bacterial strain (D38BY) belonging to the family Flavobacteriaceae and antagonistic towards an algicidal bacterium (strain S03; Flavobacteriaceae) was isolated from a culture of the red tide dinoflagellate Karenia brevis that had previously been characterized as resistant to attack by strain S03. This antagonistic bacterium increased the survival time of otherwise susceptible, bacteria-free K brevis cultures in a concentration-dependent manner during exposure to the algicidal bacterium. Experimental evidence indicated that direct contact was required in order for strain D38BY to inhibit the killing activity of algicidal strain S03. While further work is needed to determine its precise mode of action, the antagonistic properties of strain D38BY provide further evidence that the resistance or susceptibility of certain algal taxa to algicidal attack can be more a function of interactions within the ambient microbial community than an intrinsic property of the alga.
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