中文摘要：

海洋的 magnetotactic 细菌从×胡·莱克(中国) 的 intertidal 沉积是镇定的，在他们的丰富到达了 10 ³-10⁴ ind./cm ³ 的地方。magnetotactic 细菌的多样的 morphotypes 被观察，包括球菌并且卵形， vibrio- ，螺旋菌 -- ，杆 -- ，椭圆 -- ，塑造柄、塑造酒吧的形式。magnetococci 是最丰富的，并且把毛虫在捆以内在平行安排了。magnetosomes 的多数在一个被安排，二或多重链，尽管不规则的安排也是明显的。高分辨率的传播的所有结果 magnetosome 晶体由 Fe ₃ O ₄, 和他们的形态学对特别房间 morphotypes 特定。由 16S rRNA 基因顺序分析，我们发现十四与 magnetotactic 细菌有关的运作的分类单位(OTU ) 。在这些之中， 13 属于 Alphaproteobacteria 和 Alphaproteobacteria 到 Gammaproteobacteria。与相比知道无寄生物、未耕作的海洋的 magnetotactic 细菌，从展出的×胡·莱克收集的大多数 magnetotactic 细菌的 16S rRNA 基因序列定序从 90.1% ～ 96.2%的身份(<97%) 。结果显示包含以前未辩别出的 magnetotactic 细菌的微生物引起的社区发生在×胡·莱克。

英文摘要：

Marine magnetotactic bacteria were collected from the intertidal sediments of Yuehu Lake（China）, where their abundance reached 103–104 ind./cm3. Diverse morphotypes of magnetotactic bacteria were observed, including cocci and oval, vibrio-, spirillum-, rod-, elliptical-, handle- and bar-shaped forms. The magnetococci were the most abundant, and had flagella arranged in parallel within a bundle. The majority of magnetosomes were arranged in one, two or multiple chains, although irregular arrangements were also evident. All the results of high-resolution transmission electron microscopy（HRTEM） analysis show that magnetosome crystals were composed of Fe3O4, and their morphology was specific to particular cell morphotypes. By the 16 S r RNA gene sequence analysis, we found fourteen operational taxonomic units（OTUs） which were related to magnetotactic bacteria. Among these, thirteen belonged to the Alphaproteobacteria and one to the Gammaproteobacteria.Compared with known axenic and uncultured marine magnetotactic bacteria, the 16 S r RNA gene sequences of most magnetotactic bacteria collected from the Yuehu Lake exhibited sequence identities ranging from 90.1% to96.2%（〈97%）. The results indicate that microbial communities containing previously unidentified magnetotactic bacteria occur in the Yuehu Lake.