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DOI	10.1007/s10533-019-00628-8
	Dimethylated sulfur production in batch cultures of Southern Ocean phytoplankton
	Sheehan C.E.; Petrou K.
发表日期	2020
ISSN	1682563
卷号	147 期号:1
英文摘要	Dimethylsulfoniopropionate (DMSP) is a ubiquitous organic sulfur compound that underpins sulfur cycling in the marine environment and is the precursor to the climatically active gas dimethylsulfide (DMS). Modelling studies have identified the Southern Ocean as a DMS hot spot during summer, yet except for the bloom forming haptophyte Phaeocystis, little is known about sulfur production by other important members of the marine microbial community. Here, we measured DMSP concentrations and DMSP lyase activity (DLA), with corresponding carbon, nitrogen and Chl a content, in 15 species of Antarctic phototrophic phytoplankton (14 microalgae species and one cyanobacterium) and one phagotrophic flagellate. We found that 11 of the 16 species were able to produce DMSP and eight possess DLA. DMSP content ranged from 0.06 to 73 fmol cell−1 and estimated DMSP production rates ranged from 0.008 to 12.42 fmol cell−1 day−1. As expected, Phaeocystis was amongst the highest producers, however, contrary to expectation DMSP concentrations were high in several pennate diatom species, with intracellular concentrations between 1.85 and 46.6 mM. Here we present the first evidence that the cyanobacterium Synechococcus may be a DMSP producer, with the potential to contribute significantly to the DMSP pool. This study has provided the first analysis of DMSP production and DLA in a suite of phototrophic and phagotrophic species isolated from Antarctica, revealing the variability in DMSP concentrations across multiple strains and within genera and delivered new evidence for potential DLA in diatoms. © 2019, Springer Nature Switzerland AG.
英文关键词	Biogeochemistry; Dimethylsulfide; Dimethylsulfoniopropionate; Phytoplankton; Southern Ocean
学科领域	biogeochemistry; biological production; cyanobacterium; diatom; dimethylsulfide; dimethylsulfoniopropionate; flagellate; marine environment; microalga; microbial community; organic compound; phytoplankton; sulfur; sulfur cycle; Antarctica; Southern Ocean; Bacillariophyta; Mastigophora (flagellates); Phaeocystis; Synechococcus elongatus PCC 6301
语种	英语
scopus关键词	biogeochemistry; biological production; cyanobacterium; diatom; dimethylsulfide; dimethylsulfoniopropionate; flagellate; marine environment; microalga; microbial community; organic compound; phytoplankton; sulfur; sulfur cycle; Antarctica; Southern Ocean; Bacillariophyta; Mastigophora (flagellates); Phaeocystis; Synechococcus elongatus PCC 6301
来源期刊	Biogeochemistry
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/120396
作者单位	School of Life Science, University of Technology Sydney, 15 Broadway, Ultimo, NSW 2007, Australia; Climate Change Cluster, University of Technology Sydney, 15 Broadway, Ultimo, NSW 2007, Australia
推荐引用方式 GB/T 7714	Sheehan C.E.,Petrou K.. Dimethylated sulfur production in batch cultures of Southern Ocean phytoplankton[J],2020,147(1).
APA	Sheehan C.E.,&Petrou K..(2020).Dimethylated sulfur production in batch cultures of Southern Ocean phytoplankton.Biogeochemistry,147(1).
MLA	Sheehan C.E.,et al."Dimethylated sulfur production in batch cultures of Southern Ocean phytoplankton".Biogeochemistry 147.1(2020).