Inhibition of Vibrio biofilm formation by a marine actinomycete strain A66

China remains by far the largest aquaculture producer in the world. However, biofilms formed by pathogenic Vibrio strains pose serious problems to marine aquaculture. To provide a strategy for biofilm prevention, control, and eradication, extracts from 88 marine actinomycetes were screened. Thirty-f...

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Bibliographic Details
Published in:Applied microbiology and biotechnology 2007-10, Vol.76 (5), p.1137-1144
Main Authors: You, JianLan, Xue, XiaoLi, Cao, LiXiang, Lu, Xin, Wang, Jian, Zhang, LiXin, Zhou, ShiNing
Format: Article
Language:English
Subjects:
Animals
Antibiosis
Aquaculture
Aquaculture - methods
Bacteria
Biofilms
Biofilms - growth & development
Biological and medical sciences
biological control
Biotechnology
Fish Diseases - microbiology
Fundamental and applied biological sciences. Psychology
Gene Expression Regulation, Bacterial
Industrial Microbiology - methods
Marine
Microbiology
Penaeidae - microbiology
Perciformes - growth & development
Perciformes - microbiology
Pest Control, Biological
Quorum Sensing
Seawater
Shellfish - microbiology
Streptomyces - classification
Streptomyces - genetics
Streptomyces - growth & development
Vibrio - classification
Vibrio - growth & development
Vibrio - isolation & purification
Vibrio anguillarum
Vibrio biofilm
Vibrio harveyi
Vibrio vulnificus
Vibrio vulnificus - growth & development
Vibrio vulnificus - isolation & purification
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Summary:China remains by far the largest aquaculture producer in the world. However, biofilms formed by pathogenic Vibrio strains pose serious problems to marine aquaculture. To provide a strategy for biofilm prevention, control, and eradication, extracts from 88 marine actinomycetes were screened. Thirty-five inhibited the biofilm formation of Vibrio harveyi, Vibrio vulnificus, and Vibrio anguillarum at a concentration of 2.5% (v/v). Thirty-three of the actinomycete extracts dispersed the mature biofilm. Six extracts inhibited the quorum-sensing system of V. harveyi by attenuating the signal molecules N-acylated homoserine lactones' activity. Strain A66, which was identified as Steptomyces albus, both attenuated the biofilms and inhibited their quorum-sensing system. It is suggested that strain A66 is a promising candidate to be used in future marine aquaculture.
ISSN:0175-7598
1432-0614
DOI:10.1007/s00253-007-1074-x