Two Genera of Magnetococci with Bean-like Morphology from Intertidal Sediments of the Yellow Sea, China

doi:10.1128/AEM.00081-12

	Two Genera of Magnetococci with Bean-like Morphology from Intertidal Sediments of the Yellow Sea, China
	Zhang, Wen-Yan 1,3; Zhou, Ke 1; Pan, Hong-Miao 1; Yue, Hai-Dong 1; Jiang, Ming 3; Xiao, Tian 1,4; Wu, Long-Fei 2,4; Xiao, T (reprint author), Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China.
	2012-08-01
发表期刊	APPLIED AND ENVIRONMENTAL MICROBIOLOGY
ISSN	0099-2240
卷号	78 期号:16 页码:5606-5611
文章类型	Article
摘要	Magnetotactic bacteria have the unique capacity of being able to swim along geomagnetic field lines. They are Gram-negative bacteria with diverse morphologies and variable phylogenetic relatedness. Here, we describe a group of uncultivated marine magnetococci collected from intertidal sediments of Huiquan Bay in the Yellow Sea. They were coccoid-ovoid in morphology, with an average size of 2.8 +/- 0.3 mu m by 2.0 +/- 0.2 mu m. Differential interference contrast microscopy, fluorescence microscopy, and transmission electron microscopy revealed that each cell was apparently composed of two hemispheres. The cells synthesized iron oxide-type magnetosomes that clustered on one side of the cell at the interface between the two hemispheres. In some cells two chains of magnetosomes were observed across the interface. Each cell had two bundles of flagella enveloped in a sheath and displayed north-seeking helical motion. Two 16S rRNA gene sequences having 91.8% identity were obtained, and their authenticity was confirmed by fluorescence in situ hybridization. Phylogenetic analysis revealed that the magnetococci are affiliated with the Alphaproteobacteria and are most closely related to two uncultured magnetococci with sequence identities of 92.7% and 92.4%, respectively. Because they display a >7% sequence divergence to all bacteria reported, the bean-like magnetococci may represent two novel genera.
关键词	Magnetotactic Bacteria Magnetosome Formation Ultrastructure Cocci Zone
学科领域	Biotechnology & Applied Microbiology ; Microbiology
DOI	10.1128/AEM.00081-12
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000307139500016
引用统计	被引频次：24[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/12455
专题	海洋生态与环境科学重点实验室
通讯作者	Xiao, T (reprint author), Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China.
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China 2.Aix Marseille Univ, Lab Chim Bacterienne, CNRS, Marseille, France 3.Ocean Univ China, Coll Marine Life Sci, Qingdao, Peoples R China 4.CNRS, Lab Int Associe Biomineralisat & Nanostruct, Marseille, France
第一作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Zhang, Wen-Yan,Zhou, Ke,Pan, Hong-Miao,et al. Two Genera of Magnetococci with Bean-like Morphology from Intertidal Sediments of the Yellow Sea, China[J]. APPLIED AND ENVIRONMENTAL MICROBIOLOGY,2012,78(16):5606-5611.
APA	Zhang, Wen-Yan.,Zhou, Ke.,Pan, Hong-Miao.,Yue, Hai-Dong.,Jiang, Ming.,...&Xiao, T .(2012).Two Genera of Magnetococci with Bean-like Morphology from Intertidal Sediments of the Yellow Sea, China.APPLIED AND ENVIRONMENTAL MICROBIOLOGY,78(16),5606-5611.
MLA	Zhang, Wen-Yan,et al."Two Genera of Magnetococci with Bean-like Morphology from Intertidal Sediments of the Yellow Sea, China".APPLIED AND ENVIRONMENTAL MICROBIOLOGY 78.16(2012):5606-5611.

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