||Bettencourt Raul1, Costa Valentina1, Laranjo Mario1, Rosa Domitilia1, Pires Luis1, Colaco Ana1, 2, Sarradin Pierre Marie1, 2, Lopes Humberto1, Sarrazin Marie Josée1, 2, Santos Ricardo Serrao1, 2
||1 : Univ Azores, Mol Biol Lab, IMAR Dept Oceanog & Fisheries, P-9901862 Horta, Portugal.
2 : Inst Francais Rech Exploitat Mer Ifremer, Ctr Brest, Dept Etud Ecosyst Profonds, Lab Environm Profond, F-29280 Plouzane, France.
||4th International Symposium on Chemosynthesis-Based Ecosystems - Hydrothermal Vents, Seeps and Other Reducing Habitats, Nago, JAPAN, JUN 29-JUL 03, 2009
||Cahiers De Biologie Marine (0007-9723) (Station biologique de Roscoff), 2010 , Vol. 51 , N. 4 , P. 341-350
|WOS© Times Cited
||Bathymodiolus azoricus, Innate immunity, Gene expression, IPOCAMP, Physiological adaptation, Hydrothermal vent
||Deep-sea hydrothermal vents are considered as some of the most adverse environments in the world, yet the animals dwelling around the vent sites exhibit high productivity and therefore must cope with unusual levels of heavy metals, pH, temperature, CO2 and sulfide, in addition to environmental microbes. In an attempt to understand the physiological reactions of animals normally set to endure extreme conditions we investigated molecular indicators of acclimation processes during which the mussel Bathymodiolus azoricus was maintained over long periods of time under without methane and/or sulfide supplementation, vent mussels seem to endure well aquarium conditions. The presence and induction of a Rel Homology Domain containing gene was investigated along with the induction of the antibacterial gene mytilin following experimental infections carried out with the marine bacteria Vibrio parahaemolyticus. It was then concluded that vent mussels are capable of performing typical immune gene transcription activity as their shallow water congeners. The mussel's viability was determined during stimulations achieved with the hyperbaric chamber IPOCAMP, by comparing the expression levels of, among other genes, the metal-responsive Metallothionein (MT) gene at 170 bars. laboratory conditions. Even in the absence of the characteristic high hydrostatic pressure found at deep-sea vent sites and Our results suggest that Bathymodiolus azoricus maybe used in experimental studies as an indicator species, for assessing immunity, toxicity or metal stress and the effect of hydrostatic pressure.
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