干旱区生态环境知识资源中心(Arid): Different Nitrogen Sources Fuel Symbiotic Mussels at Cold Seeps

Arid

DOI	10.3389/fmars.2022.869226
	Different Nitrogen Sources Fuel Symbiotic Mussels at Cold Seeps
	Wang, Fuqiang; Wu, Ying; Feng, Dong
通讯作者	Wu, Y
来源期刊	FRONTIERS IN MARINE SCIENCE
EISSN	2296-7745
出版年	2022
卷号	9
英文摘要	Cold seeps globally host dense unique oasis-type ecosystems, mainly fuelled by chemosynthetic microorganisms via reduced gases such as methane and hydrogen sulfide. However, the origin and pathway of nitrogen chemosynthesis in this widely distributed symbiont ecosystem remain poorly understood. Here, we explore biomarker methods (bulk stable isotope, amino acid (AA), fatty acid (FA) and compound-specific isotope analyses in gill tissues of mussels) to demonstrate the relative contributions of inorganic and organic nitrogen to symbiotic mussels at cold seeps in the South China Sea and their impact on the synthesis and metabolism of amino acids. Gigantidas platifrons (G. platifrons) symbioses with type II methanotrophs via the Serine pathway, and Bathymodiolus aduloides (B. aduloides) thrives with sulfur-oxidizing bacteria via the Calvin pathway, as revealed by bulk delta C-13 and delta C-13 of FAs. Based on the delta N-15 values in gill tissues of mussels, organic nitrogen from sediment is estimated as the dominant nitrogen source for B. aduloides (97-98%), in contrast, NH4 (+) was the main nitrogen source for G. platifrons. Different dominant nitrogen sources result in the delta N-15 of AAs in the gills of two mussel species having opposite trends, which might be related to synthesis and metabolism of AAs in symbiotic bacteria and host, respectively. Our findings reveal that the mechanism of nitrogen acquisition in cold seep systems is plastic and related to DIN sources/uptake and changing environmental conditions. These findings uncover novel biosynthesis of nitrogen in the deep sea, typically at cold seeps, and may have important implications for nitrogen biogeochemistry and deep-sea conservation.
英文关键词	symbiotic mussels cold seeps nitrogen sources biomarker methods delta C-13 of fatty acids delta N-15 of amino acids
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000886112500001
WOS关键词	CARBON ISOTOPIC FRACTIONATION ; AMINO-ACID ; ORGANIC NITROGEN ; DELTA-N-15 ; COMMUNITIES ; BACTERIA ; ECOLOGY ; GULF ; CHROMATOGRAPHY ; BIOSYNTHESIS
WOS类目	Environmental Sciences ; Marine & Freshwater Biology
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392773
推荐引用方式 GB/T 7714	Wang, Fuqiang,Wu, Ying,Feng, Dong. Different Nitrogen Sources Fuel Symbiotic Mussels at Cold Seeps[J],2022,9.
APA	Wang, Fuqiang,Wu, Ying,&Feng, Dong.(2022).Different Nitrogen Sources Fuel Symbiotic Mussels at Cold Seeps.FRONTIERS IN MARINE SCIENCE,9.
MLA	Wang, Fuqiang,et al."Different Nitrogen Sources Fuel Symbiotic Mussels at Cold Seeps".FRONTIERS IN MARINE SCIENCE 9(2022).