Characterization and diversity of magnetotactic bacteria from sediments of Caroline Seamount in the Western Pacific Ocean

IOCAS-IR

	Characterization and diversity of magnetotactic bacteria from sediments of Caroline Seamount in the Western Pacific Ocean
	Kaixuan CUI ; Wenyan ZHANG ; Jia LIU ; Cong XU; Yicong ZHAO ; Si CHEN ; Hongmiao PAN ; Tian XIAO ; Long-Fei WU
发表期刊	Journal of Oceanology and Limnology
ISSN	2096-5508
	2021-11-15
出版年	2021
卷号	v.39 期号:06 页码:29-45
文献类型	CNKI期刊论文
摘要	Magnetotactic bacteria(MTB) are a group of microorganisms capable of orientating and swimming along magnetic fields because they contain intracellular biomineralized magneto somes compo sed of magnetite(Fe_3 O_4) or/and greigite(Fe3 S4).They are ubiquitous in freshwater,brackish,and marine habitats,and are cosmopolitan in distribution.However,knowledge of their occurrence and distribution in seamount ecosystems is limited.We investigated the diversity and distribution of MTB in the Caroline Seamount(CM4).The abundance of living MTB in 12 stations in depth varying from 90 to 1 545 m was 1.1×10~3-43.7×10~3 inds./dm~3.Despite diverse shapes of MTB observed,magnetotactic cocci were the dominant morphotype and could be categorized into two types:1) typical cocci that appeared to have peritrichous flagella;and 2) those characterized by having a drop-shaped form and one bundle of flagella located at the thin/narrow end of the cell.Transmission electron microscopy(TEM) analysis revealed that the magnetosomes formed by tho se magnetotactic cocci are magnetite(Fe_3 O_4) with octahedral crystal habit.A total of 41 operational taxonomic units(OTUs) of putative MTB(2 702 reads) were acquired from nine stations,based on high-throughput sequencing.Of these,40 OTUs belonged to the Proteobacteria phylum and one belonged to the Nitro spirae phylum.We found apparent connectivity between the MTB populations on the Caroline and Kexue(Science in Chinese) seamounts,although the diversity of MTB on Caroline was much richer than on the Kexue Seamount.Our results imply that the unique topography of seamounts and other as-yet unclear environmental factors could lead to evolution of different flagella arrangements in magnetotactic cocci,and the occurrence of octahedral magnetite magnetosomes.
关键词	magnetotactic bacteria Caroline Seamount abundance diversity magnetosome
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	Q938
收录类别	中科院核心 ; 中科院扩展
语种	英文;
资助项目(基金）	Supported by the National Natural Science Foundation of China (Nos.41776130,41776131) ; the National Natural Science Foundation of China,Shandong Joint Fund (No.U1706208) ; the Youth Talent Support Program of the Laboratory for Marine Ecology and Environmental Science,Pilot National Laboratory for Marine Science and Technology (Qingdao)(No.LMEES-YTSP-2018-01-07) ; the Science & Technology Basic Resources Investigation Program of China (No.2017FY100803)
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/187599
专题	中国科学院海洋研究所
作者单位	1.CASKeyLaboratoryofMarineEcologyandEnvironmentalSciences,InstituteofOceanology,ChineseAcademyofSciences 2.LaboratoryforMarineEcologyandEnvironmentalScience,PilotNationalLaboratoryforMarineScienceandTechnology(Qingdao) 3.UniversityofChineseAcademyofSciences 4.CenterforOceanMega-Science,ChineseAcademyofSciences 5.InternationalAssociatedLaboratoryofEvolutionandDevelopmentofMagnetotacticMulticellularOrganisms(LIA-MagMC),CNRS-CAS 6.NationalOceanographicCenter 7.AixMarseilleUniv,CNRS,LCB,IM2B,IMM
推荐引用方式 GB/T 7714	Kaixuan CUI,Wenyan ZHANG,Jia LIU,et al. Characterization and diversity of magnetotactic bacteria from sediments of Caroline Seamount in the Western Pacific Ocean. 2021.