Characterization and diversity of magnetotactic bacteria from sediments of Caroline Seamount in the Western Pacific Ocean
文献类型：CNKI期刊论文
| 作者 | Kaixuan CUI; Wenyan ZHANG; Jia LIU; Cong XU ; Yicong ZHAO; Si CHEN; Hongmiao PAN; Tian XIAO; Long-Fei WU
|
| 发表日期 | 2021-11-15 |
| 出处 | Journal of Oceanology and Limnology
 |
| 关键词 | magnetotactic bacteria Caroline Seamount abundance diversity magnetosome |
| 英文摘要 | 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. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | 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) |
| 卷 | v.39期:06页:29-45 |
| 语种 | 英文; |
| 分类号 | Q938 |
| ISSN号 | 2096-5508 |
| 源URL | [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.InternationalAssociatedLaboratoryofEvolutionandDevelopmentofMagnetotacticMulticellularOrganisms(LIA-MagMC),CNRS-CAS 2.AixMarseilleUniv,CNRS,LCB,IM2B,IMM 3.CASKeyLaboratoryofMarineEcologyandEnvironmentalSciences,InstituteofOceanology,ChineseAcademyofSciences 4.LaboratoryforMarineEcologyandEnvironmentalScience,PilotNationalLaboratoryforMarineScienceandTechnology(Qingdao) 5.UniversityofChineseAcademyofSciences 6.CenterforOceanMega-Science,ChineseAcademyofSciences 7.NationalOceanographicCenter |
| 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. |
入库方式： OAI收割
来源：海洋研究所
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