Tomography of bacteria-mineral associations within the deep-sea hydrothermal vent shrimp Rimicaris exoculata

被引：6

作者：

Anderson, Louise ^{[1
]}

Halary, Sebastien ^{[1
,2
]}

Lechaire, Jean-Pierre ^{[1
,3
]}

Boudier, Thomas ^{[2
,4
]}

Frebourg, Ghislaine ^{[1
]}

Marco, Sergio ^{[2
,4
]}

Zbinden, Magali ^{[1
]}

Gaill, Francoise ^{[1
]}

机构：

[1] Univ Paris 06, UMR 7138, F-75252 Paris 05, France

[2] Ctr Univ Orsay, Inst Curie, Sect Phys, Lab Imagerie Integrat, F-91405 Orsay, France

[3] Univ Paris 06, CNRS, Inst Biol Integrat, Serv Microscopie Elect,IFR 83, F-75252 Paris 05, France

[4] Ctr Univ Orsay, INSERM, U759, F-91405 Orsay, France

来源：

COMPTES RENDUS CHIMIE | 2008年 / 11卷 / 03期

关键词：

hydrothermal; crustacea; bacteria; biomineralisation; iron oxide; tomography; symbiosis;

D O I：

10.1016/j.crci.2007.10.007

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Rimicaris exoculata flourishes around deep-sea hydrothermal vent environments along the Mid-Atlantic Ridge (MAR). Epibiotic bacteria and minerals found within the branchial chamber of the shrimp are of interest in the search for the metabolic energy pathways sustaining shrimp swarms at the Rainbow vent site (MAR). Here we examine the three-dimensional (3D) relationships between epibionts and their associated minerals. The morphology and chemical composition of the minerals were analysed by Energy Filtering Transmission Electron Microscopy (EFTEM) and the 3D organisation was determined by Transmission Electron Tomography (TET). The minerals are preferentially associated with small, rod-shaped bacteria. The iron oxide deposits exhibit three main associations with the bacterial exterior: (1) close, (2) zoned/layered and (3) distant. Iron is the most prevalent element, with a close association with the bacteria, and co-occurs with oxygen. 3D reconstructions reveal a discontinuous network of deposits around the bacteria, showing the intricate nature of these iron oxides.

引用

页码：268 / 280

页数：13