Metagenomic and microscopic analysis of magnetotactic bacteria in Tangyin hydrothermal field of Okinawa Trough - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Frontiers in Microbiology Année : 2022

Metagenomic and microscopic analysis of magnetotactic bacteria in Tangyin hydrothermal field of Okinawa Trough

Résumé

Magnetotactic bacteria (MTB) have been found in a wide variety of marine habitats, ranging from intertidal sediments to deep-sea seamounts. Deep-sea hydrothermal fields are rich in metal sulfides, which are suitable areas for the growth of magnetotactic bacteria. However, magnetotactic bacteria in hydrothermal fields have never been reported. Here the occurrence of MTB in sediments from the Tangyin hydrothermal field was analyzed by 16S rRNA gene amplicon analysis, metagenomics and transmission electron microscopy. Sequencing 16S rRNA gene yielded a total of 709 MTB sequences belonging to 20 OTUs, affiliated with Desulfobacterota, Alphaproteobacteria, and Nitrospirae. Three shapes of magnetofossil were identified by transmission electron microscopy: elongated-prismatic, bullet-shaped, and cuboctahedron. All of these structures were composed of Fe3O4. Totally 121 sequences were found to be homologous to published MTB magnetosome-function-related genes, and relevant domains were identified. Further analysis revealed that diverse MTB are present in the Tangyin hydrothermal field, and that multicellular magnetotactic prokaryotes (MMPs) might be the dominant MTB. And the MTB of Desulfobacterota and Nitrospirae here shown evolutionarily unique compared with known MTB.
Fichier principal
Vignette du fichier
Chen2022FrontMicrob Metagenomic and Microscopic Analysis of Magnetotactic Bacteria in Tangyin Hydrothermal Field of Okinawa Trough.pdf (2.91 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-03692788 , version 1 (10-06-2022)

Licence

Paternité

Identifiants

Citer

Si Chen, Min Yu, Wenyan Zhang, Kuang He, Hongmiao Pan, et al.. Metagenomic and microscopic analysis of magnetotactic bacteria in Tangyin hydrothermal field of Okinawa Trough. Frontiers in Microbiology, 2022, ⟨10.3389/fmicb.2022.887136⟩. ⟨hal-03692788⟩
76 Consultations
49 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More