English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/44594
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


A specific mix of generalists: bacterial symbionts in Mediterranean Ircinia spp.

AuthorsErwin, Patrick M.; López-Legentil, S.; González-Pech, Raúl; Turon, Xavier
KeywordsBacterial symbionts
Host specificity
Issue Date2012
PublisherBlackwell Publishing
CitationFEMS Microbiology Ecology : (2012)
AbstractMicrobial symbionts form abundant and diverse components of marine sponge holobionts, yet the ecological and evolutionary factors that dictate their community structure are unresolved. Here, we characterized the bacterial symbiont communities of three sympatric host species in the genus Ircinia from the NW Mediterranean Sea, using electron microscopy and replicated 16S rRNA gene sequence clone libraries. All Ircinia host species harbored abundant and phylogenetically diverse symbiont consortia, comprised primarily of sequences related to other sponge-derived microorganisms. Community-level analyses of bacterial symbionts revealed host species-specific genetic differentiation and structuring of Ircinia-associated microbiota. Phylogenetic analyses of host sponges showed a close evolutionary relationship between Ircinia fasciculata and Ircinia variabilis, the two host species exhibiting more similar symbiont communities. In addition, several bacterial operational taxonomic units were shared between I. variabilis and Ircinia oros, the two host species inhabiting semi-sciophilous communities in more cryptic benthic habitats, and absent in I. fasciculata, which occurs in exposed, high-irradiance habitats. The generalist nature of individual symbionts and host-specific structure of entire communities suggest that: (1) a ‘specific mix of generalists’ framework applies to bacterial symbionts in Ircinia hosts and (2) factors specific to each host species contribute to the distinct symbiont mix observed in Ircinia hosts.
Description19 páginas, 6 figuras, 4 tablas.
Publisher version (URL)http://dx.doi.org/10.1111/j.1574-6941.2011.01243.x
Appears in Collections:(CEAB) Artículos
Files in This Item:
File Description SizeFormat 
Turon2012.pdf4,71 MBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.