Rinke C, Schmitz-Esser S, Loy A, Horn M, Wagner M, Bright M. 2009. High Genetic Similarity Between Two Geographically Distinct Strains of the Sulfur-oxidizing Symbiont Candidatus Thiobios zoothamnicoli. FEMS Microbiology Ecology 67(2):229-41.

This paper investigated some marker genes encoding key enzymes of the carbon and sulfur metabolism in populations of Candidatus Thiobios zoothamnicoli from colonial Zoothamnium niveum hosts of the Caribbean and Mediterranean Seas. In addition the 16S rRNA gene of the Mediterranean population was studied. The very high amino acid sequence identity and the high nucelic acid sequence identity of the two geographically distant symbiont populations suggests that this symbiosis is very specific and temporarily and spatially stable.

Pflugfelder B, Cary CC, Bright M. 2009. Dynamics of cell proliferation and apoptosis reflect different lifestrategies in hydrothermal vent and cold seepvestimentiferan tubeworms. Cell and Tissue Research 337: 149-165.

This paper looks at the constrating life strategies of vestimentiferan tubeworms – fast in Riftia pachyptila from hydrothermal vents and slow in Lammellibrachia luymesi from cold seeps by studying the cell proliferation and cell death behavior. While both species exhibit extreme high prolifertion rates, apoptosis downregulated in Riftia, leading to fast growth, while it is upregulated in Lamellibrachia, leading to slow growth and probably thus contributed to longevity.

      




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