Observations on a magnetotactic bacteria-grazing ciliate in sediment from the intertidal zone of Huiquan Bay,China
文献类型：CNKI期刊论文
| 作者 | Si CHEN; Kaixuan CUI; Wenyan ZHANG; Yicong ZHAO; Tian XIAO; Hongmiao PAN; Wuchang ZHANG; Long-Fei WU |
| 发表日期 | 2021-11-15 |
| 出处 | Journal of Oceanology and Limnology
 |
| 关键词 | magnetically responsive protist ciliate magnetotactic bacteria magnetosome graze magnetoreception |
| 英文摘要 | Magnetotactic bacteria(MTB) are a group of prokaryotes having the ability to orient and swim along geomagnetic field line s because they contain intracellular magnetosome s that are synthe sized through a biomineralization process.Magnetosomes have recently also been found in unicellular eukaryotes,which are referred to as magnetically responsive protists(MRPs).The magnetosomes have three origins in MRPs.In this study,we characterized a MTB-grazing ciliated MRP that was magnetically collected from intertidal sediment of Huiquan Bay,Qingdao,China.Based on 18 S rRNA gene sequence analysis,the ciliated MRP was tentatively identified as Uronemella parafilificum HQ.Using transmission electron microscopy,we observed that magnetosomes having 2-3 shapes were randomly distributed within this ciliate.Energydispersive X-ray spectroscopy and high-resolution transmission electron microscopy images of the magnetosomes were consistent with them being composed of magnetite.Magnetosomes having the same shape and mineral composition were also detected in MTB that occurred in the same environment as the ciliated MRP.Statistical analysis showed that the size and shape of the magnetosomes in the ciliated MRP were similar to those in MTB.The re sults suggest that this ciliated MRP can graze,ingest,and dige st various types of MTB.It is certainly worth noting that this is the first record of MRPs in Asian aquatic sediment and suggesting they might be widely distributed.These results also support the assertion that MRPs probably contribute to the ecological cycles of iron,and expand possibilities for research into the mechanism of magnetoreception in eukaryotes. |
| 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 for Marine Science Research Centers (No.U1706208) |
| 卷 | v.39期:06页:55-64 |
| 语种 | 英文; |
| 分类号 | Q64 |
| ISSN号 | 2096-5508 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/187600]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.CenterforOceanMega-Science,ChineseAcademyofSciences 2.AixMarseilleUniv,CNRS,LCB,IM2B,IMM 3.CASKeyLaboratoryofMarineEcologyandEnvironmentalSciences,InstituteofOceanology,ChineseAcademyofSciences 4.UniversityofChineseAcademyofSciences 5.LaboratoryforMarineEcologyandEnvironmentalScience,PilotNationalLaboratoryforMarineScienceandTechnology(Qingdao) 6.InternationalAssociatedLaboratoryofEvolutionandDevelopmentofMagnetotacticMulticellularOrganisms(LIA-MagMC),CNRS-CAS |
| 推荐引用方式 GB/T 7714 | Si CHEN,Kaixuan CUI,Wenyan ZHANG,et al. Observations on a magnetotactic bacteria-grazing ciliate in sediment from the intertidal zone of Huiquan Bay,China. 2021. |
入库方式： OAI收割
来源：海洋研究所
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