Journal of Tropical Oceanography ›› 2021, Vol. 40 ›› Issue (3): 76-82.doi: 10.11978/YG2020012CSTR: 32234.14.YG2020012

• Review • Previous Articles     Next Articles

Progress of anaerobic oxidation of methane by archaea in the cold seep of deep Sea

HONG Yiguo(), WU Jiapeng   

  1. Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Institute of Environmental Research at Greater Bay Area, Guangzhou University, Guangzhou 510007, China
  • Received:2021-01-08 Revised:2021-01-19 Online:2021-05-10 Published:2021-01-22
  • Contact: HONG Yiguo E-mail:yghong@gzhu.edu.cn
  • Supported by:
    Natural Science Foundation of Guangdong Province(2019B1515120066);National Natural Science Foundation of China(31870100)

Abstract:

Anaerobic oxidation of methane (AOM) by archaea in marine sediments is gradually recognized by scientists and is regarded as an important biogeochemical process performed by both methanotrophic archaea and sulfate-reducing bacteria. Our analysis of 16S rRNA showed that multiple kinds of Methanoarchaea including AEME-1, AEME-2 and AEME-3 were the players in the AOM process, and these Methanoarchaea were distributed widely in the oxygen minimum zone of the open ocean. Furthermore, AOM process is related to the global environmental change closely. Most methane leaked from cold seeps of deep sea was consummated by Methanoarchaea in the course of penetrating the deposition layer of anoxic zone; so emission of strong greenhouse methane was reduced greatly. The studies of AOM biogeochemical process should be significant for understanding the formation mechanism of clod seep carbonate, controlling the leaking methane from seafloor, exploitation of combustible ice, and so on.

Key words: anaerobic oxidation of methane (AOM), archaea, clod seeps, methane leaking

CLC Number: 

  • P744.4