Characterization of Mediterranean Magnetotactic Bacteria

查看全文 作　　者：Lefevre [1]Christopher;Bemadac [2]Alain;Pradel [1]Nathalie;WU [1]Longfei;Yu-Zhang [3]Kui;XIAO [4]Tian;Yonnet Jean-[5]Paul;Lebouc [5]Afef;SONG [6]Tao;Fukumori [7]Yoshihiro

机构地区：[1]Laboratoire de Chimie Bactkrienne, UPR 9043, CNRS, Marseille, France;[2]Service de Microscopic Electronique, lnstitut de Biologic Structurale et Microbiologie, CNRS, Marseille, France;[3]Laboratoire de Microscopies et d'Etude de Nanostructures (LMEN), Universite de Reims, Champagne-Ardenne, 51687, Reims cedex 2, France;[4]Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, P. R. China;[5]Laboratoire d'Electrotechnique de Grenoble, Institut National Polytechniques de Grenoble, F-38402 Saint Martin d'eres Cedex, France;[6]Institute of Electrical Engineering, Chinese Academy of Science, Beijing 100080, P. R. China;[7]Department of Life Science, Graduate School of Nataral Science and Technology, Kanazawa University, Kanazawa, Japan

出　　处：《Journal of Ocean University of China》索引2007年第6卷第4期,共5页

摘　　要：Magnetotactic bacteria are a diverse group of motile prokaryotes that are ubiquitous in aquatic habitats and cosmopolitan in distribution. In this study, we collected magnetotactic bacteria from the Mediterranean Sea. A remarkable diversity of morphotypes was observed, including multicellular types that seemed to differ from those previously found in North and South America. Another interesting organism was one with magnetosomes arranged in a six-stranded bundle which occupied one third of the cell width. The magnetosome bundle was evident even under optic microscopy. These cells were connected together and swam as a linear entire unit. Magnetosomes did not always align up to form a straight linear chain. A chain composed of rectangle magnetosomes bent at a posi- tion with an oval crystal. High resolution transmission electron microscopy analysis of the crystal at the pivotal position suggested uncompleted formation of the crystal. This is the first report of Mediterranean magnetotactic bacteria, which should be useful for studies of biogeochemical cycling and geohistory of the Mediterranean Sea. 关键词：磁趋向性细菌生物地球化学地磁学地中海

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Characterization of Mediterranean Magnetotactic Bacteria

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