Le trophosome de Riftia pachyptila et Tevnia jerichonana (Vestimentifera): bioaccumulations métalliques et métabolisme du soufre = The trophosome of the Vestimentifera Riftia pachyptila and Tevnia jerichonana: metal bioaccumulations and sulphur metabolism
Truchet, M.; Ballan-Dufrançais, Ch.; Jeantet, A.Y.; Lechaire, J.-P.; Cosson, R.P. (1998). Le trophosome de Riftia pachyptila et Tevnia jerichonana (Vestimentifera): bioaccumulations métalliques et métabolisme du soufre = The trophosome of the Vestimentifera Riftia pachyptila and Tevnia jerichonana: metal bioaccumulations and sulphur metabolism. Cah. Biol. Mar. 39(2): 129-141
In: Cahiers de Biologie Marine. Station Biologique de Roscoff: Paris. ISSN 0007-9723; e-ISSN 2262-3094, more
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| Authors | | Top |
- Truchet, M.
- Ballan-Dufrançais, Ch.
- Jeantet, A.Y.
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- Lechaire, J.-P.
- Cosson, R.P.
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| Abstract |
Ultrastructural and microanalytic study of the Vestimentiferan trophosome shows that the important sulfur quantities present in the organ are not stored as globules as it was previously hypothesized. We assume that the elemental sulfur could exist under S8 octaedral structures, whose size is not observable at the microscopic scale inside the bacteria hyaloplasm. Metallic bioaccumulations are not considerable in bacteria and in bacteriocytes and are due to a physiological purifying metabolism. Metallic salts, abundant in the hydrothermal fluid are probably poorly soluble and, then, less toxic than it appeared previously. |
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