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LuxS distribution and AI-2 activity of Campylobacter spp.
MedLine Citation:
PMID:  22188245     Owner:  NLM     Status:  Publisher    
Aims:  This study investigates the distribution of LuxS within Campylobacter (C.) species and AI-2 activity of C. jejuni NCTC 11168 in food matrices. Methods and results:  LuxS (S-ribosylhomocysteinase) sequences of different Campylobacter spp. were compared and Autoinducer (AI) -2 activity measured with an AI-2 reporter assay. Highest LuxS homologies were shared by C. jejuni, C. coli and C. upsaliensis and their LuxS sequences had more similarities to the analysed Arcobacter and Vibrio harveyi strains than to all other analysed Campylobacter species. Of 15 analysed species only C. lari, C. peloridis and C. insulaenigrae did not produce AI-2 molecules. Cultivation of C. jejuni NCTC 11168 in chicken juice reduced AI-2 activity and this reduction is not due to lower luxS expression or functionality. Conclusion:  Not all Campylobacter species encode luxS. Food matrices can reduce AI-2 activity in a LuxS independent manner. Significance and impact of the study:  Beside C. lari, C. peloridis and C. insulaenigrae do not show AI-2 activity. Further investigations should clarify the function of AI-2 in Campylobacter spp. and how species lacking luxS could overcome this alteration. Furthermore the impact of food matrices on these functions needs to be determined as we could show that chicken juice reduced AI-2 activity. © 2011The Authors Journal of Applied Microbiology© 2011 The Society for Applied Microbiology.
G Gölz; L Adler; S Huehn; T Alter
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-12-21
Journal Detail:
Title:  Journal of applied microbiology     Volume:  -     ISSN:  1365-2672     ISO Abbreviation:  -     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2011-12-22     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9706280     Medline TA:  J Appl Microbiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2011The Authors Journal of Applied Microbiology © 2011 The Society for Applied Microbiology.
Institute of Food Hygiene, Free University Berlin, Germany Department of Biology, Chemistry, and Pharmacy, Free University Berlin, Germany.
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