occurrence and microscopic analyses of multicellular magnetotactic prokaryotes from coastal sediments in the Yellow Sea

IOCAS-IR

	occurrence and microscopic analyses of multicellular magnetotactic prokaryotes from coastal sediments in the Yellow Sea
	Zhou K(周克); Pan HM(潘红苗); Zhang SD(张圣妲); Yue HD(岳海东); Xiao T(肖天); Wu LF(吴龙飞)
发表期刊	Chinese Journal of Oceanology and Limnology
ISSN	0254-4059
	2011-03-15
出版年	2011
卷号	v.29 期号:02 页码:16-21
文献类型	CNKI期刊论文
摘要	Multicellular magnetotactic prokaryotes(MMPs) are a group of aggregates composed of 7-45 gram-negative cells synthesizing intracellular magnetic crystals.Although they are thought to be globally distributed,MMPs have been observed only in marine environments in America and Europe.Most MMPs share a rosette-like morphology and biomineralize iron sulfide crystals.In the present study,abundant MMPs were observed,with a density of 26 ind./cm3,in the sediments of a coastal lagoon,Lake Yuehu,in the Yellow Sea.Optical microscopy showed that all of them were rosette shaped with a diameter of 5.5±0.8 mm.Transmission electron microscopy revealed that these MMPs were composed of 10-16 ovoid cells and flagellated peritrichously.High-resolution transmission electron microscopy and energy dispersive X-ray analysis indicated that they biomineralized bullet-shaped magnetite crystals in highly organized parallel chains within which the magnetosomes were oriented in the same direction.This is the first report of MMPs from Asia and demonstrates the ubiquitous distribution of MMPs.
关键词	multicellular magnetotactic prokaryotes rosette-like magnetosomes magnetite Yellow Sea
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	Q178
收录类别	中科院核心
语种	英文;
资助项目(基金）	Supported by the National Natural Science Foundation of China(Nos. 40906069,40776094) ; Shangdong 908 Project (No. SD-908-02-08) ; the Haiwaijiechuxuezhe-Fund of Chinese Academy of Sciences (No.2006-1-15) ; K. C. WONG Education Foundation
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/191762
专题	中国科学院海洋研究所
作者单位	1.YantaiInstituteofCoastalZoneResearch,ChineseAcademyofSciences 2.KeyLaboratoryofMarineEcologyandEnvironmentalSciences,InstituteofOceanology,ChineseAcademyofSciences 3.GraduateUniversityofChineseAcademyofSciences 4.CollegeofMarineLifeScience,OceanUniversityofChina 5.France-ChinaBio-MineralizationandNano-StructuresLaboratory 6.LaboratoiredeChimieBacterienne,UniversitédelaMéditerranéeAix-MarseilleII,CNRS,Marseille,France
推荐引用方式 GB/T 7714	Zhou K,Pan HM,Zhang SD,et al. occurrence and microscopic analyses of multicellular magnetotactic prokaryotes from coastal sediments in the Yellow Sea. 2011.