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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Karlinska-Batres, Klementyna Wörheide, Gert |
| Spatial Coverage | Australia |
| Description | Country affiliation: Germany Author Affiliation: Karlinska-Batres K ( Department of Earth and Environmental Sciences, Palaeontology and Geobiology & GeoBio-Center, Ludwig-Maximilians-Universität München, Munich, Germany.) |
| Abstract | Coralline sponges of the genus Vaceletia are regarded as 'living fossils', the only recent members of the so-called 'sphinctozoan-type' sponges that contributed to reef-building during the Palaeozoic and Mesozoic eras. Vaceletia species were thought to be extinct until the discovery of Vaceletia crypta in the 1970s. Here, we used molecular methods to provide first insights into the microbial diversity of these coralline sponges. Both denaturing gradient gel electrophoresis (DGGE) analyses of 19 Vaceletia specimens and the analysis of 427 clones from a bacterial 16S rRNA gene clone library of a specimen of V. crypta from the Great Barrier Reef (Australia) revealed high diversity and a complex composition with a relatively uniform phylogenetic distribution. Only a single archaeal 16S rRNA phylotype was recovered. The most abundant bacteria were the Chloroflexi (35 %). Of the microbial community, 58 % consisted of the Gammaproteobacteria, Gemmatimonadetes, Actinobacteria, Nitrospira, Deltaproteobacteria, Deferribacteres and Acidobacteria, with nearly equal representation. Less abundant members of the microbial community belonged to the Alphaproteobacteria (3 %), as well as to the Poribacteria, Betaproteobacteria, Cyanobacteria, Spirochaetes, Bacteroidetes, Deinococcus-Thermus and Archaea (all together 4 %). Of the established 96 OTUs, 88 % were closely related to other sponge-derived sequences and thereof 71 OTUs fell into sponge- or sponge-coral specific clusters, which underscores that the 'living fossil' coralline sponge Vaceletia shares features of its microbial community with other sponges. The DGGE cluster analysis indicated distinct microbial communities in the different growth forms (solitary and colonial) of Vaceletia species. |
| File Format | HTM / HTML |
| ISSN | 00036072 |
| Issue Number | 5 |
| Volume Number | 103 |
| e-ISSN | 15729699 |
| Journal | Antonie van Leeuwenhoek |
| Language | English |
| Publisher | Springer |
| Publisher Date | 2013-05-01 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Microbiology Discipline Immunology Archaea Classification Genetics Bacteria Biota Porifera Microbiology Animals Australia Cluster Analysis Dna, Archaeal Chemistry Dna, Bacterial Dna, Ribosomal Denaturing Gradient Gel Electrophoresis Genes, Rrna Molecular Sequence Data Phylogeny Rna, Archaeal Rna, Bacterial Rna, Ribosomal, 16s Sequence Analysis, Dna Sequence Homology, Nucleic Acid Journal Article |
| Content Type | Text |
| Resource Type | Article |
| Subject | Medicine Molecular Biology Microbiology |
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