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

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	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
刊名	APPLIED AND ENVIRONMENTAL MICROBIOLOGY
	2012-08-01
卷号	78 期号:16 页码:5606-5611
关键词	MAGNETOTACTIC BACTERIA MAGNETOSOME FORMATION ULTRASTRUCTURE COCCI ZONE
ISSN号	0099-2240
通讯作者	Xiao, T (reprint author), Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China.
英文摘要	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.
学科主题	Biotechnology & Applied Microbiology ; Microbiology
收录类别	SCI
原文出处	10.1128/AEM.00081-12
语种	英语
WOS记录号	WOS:000307139500016
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/12455]
专题	海洋研究所_海洋生态与环境科学重点实验室
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
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.,...&Wu, Long-Fei.(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.