Microbial Diversity of Deep-sea Sediments from Three Newly Discovered Hydrothermal Vent Fields in the Central Indian Ridge     

Namirimu  Teddy  Park  Mi-Jeong  Kim  Yun Jae  Lim  Dhongil  Lee  Jung-Hyun  Shin  Ayoung  Kim  Dongsung  Kwon  Kae Kyoung 《Ocean Science Journal》2023,58(2):1-15

Since the discovery of hydrothermal vents in the late 1970s, deep-sea hydrothermal vent fields have attracted great attention as biological hotspots. However, compared with other ocean ridges, the structure and function of microbial communities inhabiting vent fields in the Central Indian ridge (CIR) remain understudied. Here, we provide for the first time 16S rRNA gene-based comparative metagenomic analysis of the sediment-associated microbial communities from three newly discovered vent fields in the CIR. Sediment samples collected in the Invent B, Invent E and Onnuri vent fields varied in geochemical properties, elemental concentrations and associated microbial communities. Proteobacteria (Gammaproteobacteria) was the dominant phylum in Invent B and Onnuri vent fields. In contrast, Invent E mainly consisted of Chloroflexi and Euryarchaeota. Predicted functional profiling revealed that the microbial communities in the three vents are dominated by chemoheterotrophic functions. In addition, microbial communities capable of respiration of sulfur compounds, nitrification, nitrite oxidation, methylotrophy, and methanotropy were found to be the main chemolithoautotrophs. Compared to other vent fields, Invent E showed a predominance of archaeal methanogens suggesting it exhibits slightly different geochemistry. Multivariate analysis indicated that the biogeochemical and trace metal differences are reflected in the sediment microbial compositions of the three vent fields. This study expands our current understanding of the microbial community structure and potential ecological functions of the newly discovered hydrothermal vent fields in the CIR.

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Comparison of Intestine Microbiota Between Wild and Farmed Korean Rockfish,Sebastes schlegelii     

Yu  Jihyun  Kang  Min Joo  Kim  Yun Jae  Park  Mi-Jeong  Lim  Jae Kyu  Noh  Choong Hwan  Kang  Sung Gyun  Lee  Hyun Sook  Lee  Jung-Hyun  Kwon  Kae Kyoung 《Ocean Science Journal》2021,56(3):297-306

Ocean Science Journal - The Korean rockfish, Sebastes schlegeli, is most commonly farmed in sea cages along the coast of Korea; however, detailed information on intestinal microbiota regarding this...  相似文献