Qikun Huang , Bing Wang

Tropical Microbial Resources Research Center, Cuixi Academy of Biotechnology, Zhuji, 311800, Zhejiang, China
Author    Correspondence author
International Journal of Marine Science, 2025, Vol. 15, No. 6   
Received: 12 Oct., 2025    Accepted: 27 Nov., 2025    Published: 17 Dec., 2025

This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Marine microorganisms play a core role in the global biogeochemical cycle, especially in the cycles of the three key elements of carbon (C), nitrogen (N), and sulfur (S), which are of great significance for maintaining the functions of Marine ecosystems and regulating the global climate. This study systematically reviews the diversity, ecological distribution and metabolic mechanisms of Marine microbial communities involved in the C-N-S cycle. Through empirical cases in the anoxic zone of the Black Sea, the thermocline of the Pacific Ocean and polar sea areas, it demonstrates the regulatory role of microbial communities in specific Marine regions on regional element cycles. Meanwhile, this study also explored the application prospects of emerging approaches such as metagenomics, stable isotope probe technology, and synthetic biology in the functional research of Marine microorganisms. This study aims to provide a microbiological perspective for a deeper understanding of the Marine element cycle and offer theoretical support for Marine carbon sink management and climate regulation policies.

Marine microorganisms; Carbon cycle; Nitrogen cycle; Sulfur cycle; Biogeochemical processes