Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 481043
Title Host-specific microbial communities in three sympatric North Sea sponges
Author(s) Naim, M.A.; Morillo, J.A.; Sørensen, S.J.; Waleed, A.A.; Smidt, H.; Sipkema, D.
Source FEMS microbiology ecology 90 (2014)2. - ISSN 0168-6496 - p. 390 - 403.
Department(s) Microbiology
Publication type Refereed Article in a scientific journal
Publication year 2014
Keyword(s) ribosomal-rna genes - marine sponges - halichondria-panicea - bacterial communities - abundance sponges - genomic insights - sequence data - diversity - symbionts - chlamydiae
Abstract The establishment of next-generation technology sequencing has deepened our knowledge of marine sponge-associated microbiota with the identification of at least 32 phyla of Bacteria and Archaea from a large number of sponge species. In this study, we assessed the diversity of the microbial communities hosted by three sympatric sponges living in a semi-enclosed North Sea environment using pyrosequencing of bacterial and archaeal 16S ribosomal RNA gene fragments. The three sponges harbor species-specific communities each dominated by a different class of Proteobacteria. An a-proteobacterial Rhodobacter-like phylotype was confirmed as the predominant symbiont of Halichondria panicea. The microbial communities of Haliclona xena and H. oculata are described for the first time in this study and are dominated by Gammaproteobacteria and Betaproteobacteria, respectively. Several common phylotypes belonging to Chlamydiae, TM6, Actinobacteria, and Betaproteobacteria were detected in all sponge samples. A number of phylotypes of the phylum Chlamydiae were present at an unprecedentedly high relative abundance of up to 14.4 ± 1.4% of the total reads, which suggests an important ecological role in North Sea sponges. These Chlamydiae-affiliated operational taxonomic units may represent novel lineages at least at the genus level as they are only 86–92% similar to known sequences.
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