Microbial vertical diversity in core sediments and its response to environmental factors near the hydrothermal field of the southern Okinawa Trough

DENG Xingyu; CAO Wenrui; JIANG Mingyu; ZENG Zhigang; CHANG Fengming; SONG Zhaojun

doi:10.16562/j.cnki.0256-1492.2023061901

2023 Vol. 43, No. 5

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Article navigation > Marine Geology & Quaternary Geology > 2023 > 43(5): 198-213

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DENG Xingyu, CAO Wenrui, JIANG Mingyu, ZENG Zhigang, CHANG Fengming, SONG Zhaojun. Microbial vertical diversity in core sediments and its response to environmental factors near the hydrothermal field of the southern Okinawa Trough[J]. Marine Geology & Quaternary Geology, 2023, 43(5): 198-213. doi: 10.16562/j.cnki.0256-1492.2023061901

Citation:

DENG Xingyu, CAO Wenrui, JIANG Mingyu, ZENG Zhigang, CHANG Fengming, SONG Zhaojun. Microbial vertical diversity in core sediments and its response to environmental factors near the hydrothermal field of the southern Okinawa Trough[J]. Marine Geology & Quaternary Geology, 2023, 43(5): 198-213. doi: 10.16562/j.cnki.0256-1492.2023061901

Microbial vertical diversity in core sediments and its response to environmental factors near the hydrothermal field of the southern Okinawa Trough

1.
College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
2.
Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China

More Information

Corresponding author: CAO Wenrui, wrcao@qdio.ac.cn

Received Date: 19 June 2023

Revised Date: 30 July 2023

Accepted Date: 30 July 2023

Publish Date: 28 October 2023

Abstract

Abstract

In recent years, microbe and its adaptation mechanism in submarine hydrothermal environment have become the focus of marine science research. At present, relevant researches focus on the horizontal distribution diversity of surface sediments and microorganisms, and only few researches on the vertical distribution diversity of microorganisms in columnar sediments. Based on the columnar sediment samples from the S2 station in the southern hydrothermal area of the Okinawa Trough in the western Pacific Ocean, we revealed the vertical community distribution characteristics of culturable microorganisms and the overall microorganisms in the samples through isolation, culture, and high-throughput sequencing of 16S rRNA gene from the samples at different levels. At the same time, the microbial community structure and its response to environmental factors were discussed by using statistical methods such as the evaluation of major elements, trace elements, carbon and nitrogen contents, and redundancy analysis. Results show that the organic matter content of the core sediment at this site is relatively poor, and Cu-Zn-Pb is rich in two layers; the microbial community of each layer is composed of mainly Proteobacteria, while the surface sediments exhibit higher microbial diversity. Meanwhile, it indicated a closer relationship between the organic carbon content of core sediments and the composition of their microbial communities. This study obtained bacterial strain resources and provided a basis for further research into microbial participation in the geochemical cycle of elements in submarine hydrothermal environment.
- seafloor hydrothermal field /
- microbial community /
- core sediment /
- environmental factors /
- Okinawa Trough

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References

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