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Magnetotactic Coccus Strain SHHC-1 Affiliated to Alphaproteobacteria Forms Octahedral Magnetite Magnetosomes

文献类型：期刊论文

作者Zhang, Heng1,2,3,4; Menguy, Nicolas4,5; Wang, Fuxian2,3,4; Benzerara, Karim5; Leroy, Eric6; Liu, Peiyu2,3,4; Liu, Wenqi2,3,4; Wang, Chunli1; Pan, Yongxin2,4; Chen, Zhibao1
刊名FRONTIERS IN MICROBIOLOGY
出版日期2017-05-30
卷号8
关键词Magnetotactic Cocci Magnetosome Biomineralization Octahedron Coordinated Fish-sem Tem
ISSN号1664-302X
DOI10.3389/fmicb.2017.00969
文献子类Article
英文摘要Magnetotactic bacteria (MTB) are morphologically and phylogenetically diverse prokaryotes. They can form intracellular chain-assembled magnetite (Fe3O4) or greigite (Fe3S4) nanocrystals each enveloped by a lipid bilayer membrane called amagnetosome. Magnetotactic cocci have been found to be the most abundant morphotypes of MTB in various aquatic environments. However, knowledge on magnetosome biomineralization within magnetotactic cocci remains elusive due to small number of strains that have been cultured. By using a coordinated fluorescence and scanning electron microscopy method, we discovered a unique magnetotactic coccus strain (tentatively named SHHC-1) in brackish sediments collected from the estuary of Shihe River in Qinhuangdao city, eastern China. It phylogenetically belongs to the Alphaproteobacteria class. Transmission electron microscopy analyses reveal that SHHC-1 cells formed many magnetite-type magnetosomes organized as two bundles in each cell. Each bundle contains two parallel chains with smaller magnetosomes generally located at the ends of each chain. Unlike most magnetotactic alphaproteobacteria that generally form magnetosomes with uniform crystal morphologies, SHHC-1 magnetosomes display a more diverse variety of crystal morphology even within a single cell. Most particles have rectangular and rhomboidal projections, whilst others are triangular, or irregular. High resolution transmission electron microscopy observations coupled with morphological modeling indicate an idealized model-elongated octahedral crystals, a form composed of eight {111} faces. Furthermore, twins, multiple twins and stack dislocations are frequently observed in the SHHC-1 magnetosomes. This suggests that biomineralization of strain SHHC-1 magnetosome might be less biologically controlled than other magnetotactic alphaproteobacteria. Alternatively, SHHC-1 is more sensitive to the unfavorable environments under which it lives, or a combination of both factors may have controlled the magnetosome biomineralization process within this unique MTB.
WOS关键词TRANSMISSION ELECTRON-MICROSCOPY ; MARTIAN METEORITE ALH84001 ; BIOLOGICALLY CONTROLLED MINERALIZATION ; SINGLE-DOMAIN MAGNETITE ; ORGANIC-CARBON FLUX ; PHYLOGENETIC ANALYSIS ; SIZE DISTRIBUTIONS ; PHYLUM NITROSPIRAE ; MARINE-SEDIMENTS ; BACTERIA
WOS研究方向Microbiology
语种英语
WOS记录号WOS:000402247100001
出版者FRONTIERS MEDIA SA
资助机构National Natural Science Foundation of China(41522402 ; National Natural Science Foundation of China(41522402 ; State Key Laboratory of Lithospheric Evolution (SKLLE, Beijing) ; State Key Laboratory of Lithospheric Evolution (SKLLE, Beijing) ; Region Ile-de-France(SESAME 2000 E 1435) ; Region Ile-de-France(SESAME 2000 E 1435) ; 41374004 ; 41374004 ; 41330104 ; 41330104 ; 41621004) ; 41621004) ; National Natural Science Foundation of China(41522402 ; National Natural Science Foundation of China(41522402 ; State Key Laboratory of Lithospheric Evolution (SKLLE, Beijing) ; State Key Laboratory of Lithospheric Evolution (SKLLE, Beijing) ; Region Ile-de-France(SESAME 2000 E 1435) ; Region Ile-de-France(SESAME 2000 E 1435) ; 41374004 ; 41374004 ; 41330104 ; 41330104 ; 41621004) ; 41621004) ; National Natural Science Foundation of China(41522402 ; National Natural Science Foundation of China(41522402 ; State Key Laboratory of Lithospheric Evolution (SKLLE, Beijing) ; State Key Laboratory of Lithospheric Evolution (SKLLE, Beijing) ; Region Ile-de-France(SESAME 2000 E 1435) ; Region Ile-de-France(SESAME 2000 E 1435) ; 41374004 ; 41374004 ; 41330104 ; 41330104 ; 41621004) ; 41621004) ; National Natural Science Foundation of China(41522402 ; National Natural Science Foundation of China(41522402 ; State Key Laboratory of Lithospheric Evolution (SKLLE, Beijing) ; State Key Laboratory of Lithospheric Evolution (SKLLE, Beijing) ; Region Ile-de-France(SESAME 2000 E 1435) ; Region Ile-de-France(SESAME 2000 E 1435) ; 41374004 ; 41374004 ; 41330104 ; 41330104 ; 41621004) ; 41621004)
源URL[http://ir.iggcas.ac.cn/handle/132A11/52862]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Chen, Zhibao; Li, Jinhua
作者单位1.Heilongjiang Bayi Agr Univ, Dept Life Sci & Technol, Daqing, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao, Peoples R China
4.Chinese Acad Sci, France China Biomineralizat & Nanostruct Lab, Beijing, Peoples R China
5.Sorbonne Univ, IMPMC, CNRS, UMR 7590,MNHN,UPMC,IRD UMR 206, Paris, France
6.CNRS, ICMPE, France Chim Met Terres Rares, UMR 7182, Thiais, France
推荐引用方式
GB/T 7714		 Zhang, Heng,Menguy, Nicolas,Wang, Fuxian,et al. Magnetotactic Coccus Strain SHHC-1 Affiliated to Alphaproteobacteria Forms Octahedral Magnetite Magnetosomes[J]. FRONTIERS IN MICROBIOLOGY,2017,8.
APA Zhang, Heng.,Menguy, Nicolas.,Wang, Fuxian.,Benzerara, Karim.,Leroy, Eric.,...&Li, Jinhua.(2017).Magnetotactic Coccus Strain SHHC-1 Affiliated to Alphaproteobacteria Forms Octahedral Magnetite Magnetosomes.FRONTIERS IN MICROBIOLOGY,8.
MLA Zhang, Heng,et al."Magnetotactic Coccus Strain SHHC-1 Affiliated to Alphaproteobacteria Forms Octahedral Magnetite Magnetosomes".FRONTIERS IN MICROBIOLOGY 8(2017).

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来源：地质与地球物理研究所

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