Diversity of Magnetotactic Bacteria from a French Pristine Mediterranean Area
Diversity of Magnetotactic Bacteria from a French Pristine Mediterranean Area
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DOI：
10.1007/s00284-014-0745-y
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发表时间：
2015-04-01
影响因子：
2.6
通讯作者：
Pradel, Nathalie
中科院分区：
文献类型：
--
作者：
Fuduche, Maxime;Postec, Anne;Pradel, Nathalie
趋磁细菌合成细胞内磁铁矿和/或镁铁矿磁小体晶体。它们在沉积水生环境中的铁和硫循环中发挥着重要作用。为了深入了解 MTB 的生物地球化学贡献，有必要对其生态学及其在不同生境中的分布进行更多研究。此前曾对法国地中海沿岸石油工业污染地区的 MTB 社区进行过调查。在这里，我们使用光学和透射电子显微镜以及基于 16S rRNA 基因序列的系统发育分析来研究地中海原始地区沿海沉积物中的 MTB 群落。观察到 MTB 具有特别高的多样性，球菌在系统发育上分布在磁球菌目中，包括一个新的簇，其序列来自地中海，被指定为“地中海组”，以及新的形态型。
Magnetotactic bacteria synthesize intracellular magnetite and/or greigite magnetosome crystals. They play a significant role in both iron and sulfur cycles in sedimentary aquatic environments. To get insight into the bio-geochemical contribution of MTB, more studies concerning their ecology and their distribution in diverse habitats are necessary. The MTB community of an oil-industry polluted area of the French Mediterranean coast has been previously investigated. Here, we investigate the MTB community from coastal sediments of a Mediterranean pristine area using optical and transmission electron microscopy and phylogenetic analysis based on 16S rRNA gene sequences. A particularly high diversity of MTB was observed, with cocci phylogenetically distributed across the order Magnetococcales, including a novel cluster with sequences from the Mediterranean Sea designated as "Med group", and novel morphotypes.