PMID: 18400995Apr 11, 2008Paper

Endosymbionts of Siboglinum fiordicum and the phylogeny of bacterial endosymbionts in Siboglinidae (Annelida)

The Biological Bulletin
Daniel J ThornhillK M Halanych

Abstract

Siboglinid worms are a group of gutless marine annelids that are nutritionally dependent upon endosymbiotic bacteria. Four major groups of siboglinids are known-vestimentiferans, moniliferans, Osedax spp. and frenulates. Although endosymbionts of vestimentiferans and Osedax spp. have been previously characterized, little is currently known about endosymbiotic bacteria associated with frenulate and moniliferan siboglinids. This is particularly surprising given that frenulates are the most diverse and widely distributed group of siboglinids. Here, we molecularly characterize endosymbiotic bacteria associated with the frenulate siboglinid Siboglinum fiordicum by using 16S rDNA ribotyping in concert with laser-capture microdissection (LCM). Phylogenetic analysis indicates that at least three major clades of endosymbiotic gamma-proteobacteria associate with siboglinid annelids, with each clade corresponding to a major siboglinid group. S. fiordicum endosymbionts are a group of gamma-proteobacteria that are divergent from bacteria associated with vestimentiferan or Osedax hosts. Interestingly, symbionts of S. fiordicum, from Norway, are most closely related to symbionts of the frenulate Oligobrachia mashikoi from Japan, suggesting th...Continue Reading

Citations

Sep 17, 2008·Nature Reviews. Microbiology·Nicole DubilierChristian Lott
Aug 26, 2009·Communicative & Integrative Biology·Daniel J ThornhillKenneth M Halanych
Feb 23, 2011·PloS One·Ana HilárioAdrian G Glover
Jan 1, 2009·Annual Review of Marine Science·Erik E CordesCharles R Fisher
Jul 6, 2014·Environmental Microbiology Reports·Irmgard EichingerMonika Bright
Jul 20, 2018·The ISME Journal·Yuanning LiKenneth M Halanych
Aug 6, 2021·Annual Review of Microbiology·E Maggie SoginNicole Dubilier

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