Characterization of uncultivated magnetotactic bacteria from the sediments of Yuehu Lake, China

IOCAS-IR

	Characterization of uncultivated magnetotactic bacteria from the sediments of Yuehu Lake, China
	DU Haijian; ZHANG Rui; ZHANG Wenyan ; XU Cong; CHEN Yiran ; PAN Hongmiao ; ZHOU Ke ; WU Long-fei ; XIAO Tian
发表期刊	Acta Oceanologica Sinica
ISSN	0253-505X
	2017-02-15
出版年	2017
卷号	v.36 期号:02 页码:98-108
文献类型	CNKI期刊论文
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.
关键词	magnetotactic bacteria magnetosome biodiversity Yuehu Lake intertidal sediments
CNKI专辑号	A;
CNKI专辑名称	基础科学;
CNKI专题号	A006;
CNKI专题名称	生物学;
分类号	Q93
收录类别	中科院核心 ; 中科院扩展
语种	英文;
资助项目(基金）	The National Natural Science Foundation of China under contract Nos 41606187 and 41276170 ; the National Natural Science Foundation of China under contract No.41330962 ; the National Natural Science Foundation of China—Shandong Joint Fund for Marine Science Research Centers under contract No.U1406403 ; supported by Laboratoire International Associé de la Bio-Minéralisation et Nano-Structures
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/189402
专题	中国科学院海洋研究所
作者单位	1.KeyLaboratoryforMarineEcologyandEnvironmentalSciences,InstituteofOceanology,ChineseAcademyofSciences 2.LaboratoryforMarineEcologyandEnvironmentalScience,QingdaoNationalLaboratoryforMarineScienceandTechnology 3.UniversityofChineseAcademyofSciences 4.CollegeofResourcesandEnvironment,QingdaoAgricultureUniversity 5.AixMarseilleUniversité,CNRS,LCBUMR7257,InstitutdeMicrobiologiedelaMéditerranée
推荐引用方式 GB/T 7714	DU Haijian,ZHANG Rui,ZHANG Wenyan,et al. Characterization of uncultivated magnetotactic bacteria from the sediments of Yuehu Lake, China. 2017.