Document Detail


Changes of the phenol-degrading bacterial community during the decomposition of submersed Platanus acerifolia leaves.
MedLine Citation:
PMID:  23136943     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Microorganisms are responsible for the decomposition of plant litter due to their enhanced enzyme capabilities. Among extracellular enzymes, those involved in lignin decomposition are especially relevant in leaf degradation. However, the knowledge of the bacterial contribution to the decomposition of phenol derived compounds in submerged leaf litter is limited. We have used the large unit of the multicomponent bacterial phenol hydroxylase (LmpH) as a genetic proxy to describe changes in the phenol-degrading bacterial community during the decomposition of Platanus acerifolia leaves in a forested stream. Significant differences were found in the phenol-degrading community when three decomposition stages, initial (day 7), midterm (day 58) and late (day 112), were compared. Estimated Shannon's diversity values decreased significantly from 1.93 (initial) to 0.97 (late). According to the deduced amino acid sequences and the corresponding theoretical kinetic parameters of phenol hydroxylases, the initial community showed a low degree of specialization, presumably resulting from random colonization of leaves. At the late decomposition stage, the bacterial community became more specialized, and LmpH genes similar to high affinity phenol hydroxylases of Comamonas sp. and Burkholderia cepacia increased. The observed changes in the bacterial community suggested an active role of bacteria during litter decomposition in aquatic environments. © 2012 Federation of European Microbiological Societies. Published by Blackwell Publishing Ltd. All rights reserved.
Authors:
Sara Ramió-Pujol; Lluís Bañeras; Joan Artigas; Anna M Romaní
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Publication Detail:
Type:  LETTER     Date:  2012-11-9
Journal Detail:
Title:  FEMS microbiology letters     Volume:  -     ISSN:  1574-6968     ISO Abbreviation:  FEMS Microbiol. Lett.     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-9     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7705721     Medline TA:  FEMS Microbiol Lett     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2012 Federation of European Microbiological Societies. Published by Blackwell Publishing Ltd. All rights reserved.
Affiliation:
Institute of Aquatic Ecology, University of Girona, Campus de Montilivi s/n, E-17071, Girona, Spain.
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