Distribution and Dimethylsulfoniopropionate Degradation of Dimethylsulfoniopropionate‐Consuming Bacteria in the Yellow Sea and East China Sea

Yu, Juan; Zhang, Shenghui; Tian, Jiyuan; Zhang, Zhengyu; Zhao, Lijun; Xu, Ruiyi; Yang, Gui‐Peng; Lai, Jing‐Guang; Wang, Xue-Dan

doi:10.1029/2021jc017679

Cited by 7 publications

(11 citation statements)

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“…The abundance of bacteria in the ECS was higher (~2.02-fold) than that in the YS. The higher ECS bacteria abundance was most likely the result of the regional hydrography including Taiwan Warm Current and Changjiang plume flowing northward near the Yangtze Estuary, the joint influence of the Yellow Sea cold water mass and the Yellow Sea warm current, as well as the discharge of Yangtze Diluted Water ( Lee and Chao, 2003 ; Mi et al, 2012 ; Yeh et al, 2015 ; Yu et al, 2021 ). Bacteria were more abundant (~3.28-fold) in summer than those in spring from the ECS ( Sun et al, 2020 ), and the SML bacteria decreased with the increase of offshore distance in summer.…”

Section: Discussionmentioning

confidence: 99%

Highly active bacterial DMSP metabolism in the surface microlayer of the eastern China marginal seas

et al. 2023

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The microbial cycling of dimethylsulfoniopropionate (DMSP) and the resulting gaseous catabolites dimethylsulfide (DMS) or methylmercaptan (MeSH) play key roles in the global sulfur cycle and potentially climate regulation. As the ocean–atmosphere boundary, the sea surface microlayer (SML) is important for the generation and emission of DMS and MeSH. However, understanding of the microbial DMSP metabolism remains limited in the SML. Here, we studied the spatiotemporal differences for DMS/DMSP, bacterial community structure and the key bacterial DMSP metabolic genes between SML and subsurface seawater (SSW) samples in the eastern China marginal seas (the East China Sea and Yellow Sea). In general, DMSPd and DMSPt concentrations, and the abundance of total, free-living and particle-associated bacteria were higher in SML than that in SSW. DMSP synthesis (~7.81-fold for dsyB, ~2.93-fold for mmtN) and degradation genes (~5.38-fold for dmdA, ~6.27-fold for dddP) detected in SML were more abundant compared with SSW samples. Free-living bacteria were the main DMSP producers and consumers in eastern Chinese marginal sea. Regionally, the bacterial community structure was distinct between the East China Sea and the Yellow Sea. The abundance of DMSP metabolic genes (dsyB, dmdA, and dddP) and genera in the East China Sea were higher than those of the Yellow Sea. Seasonally, DMSP/DMS level and DMSP metabolic genes and bacteria were more abundant in SML of the East China Sea in summer than in spring. Different from those in spring, Ruegeria was the dominant DMSP metabolic bacteria. In conclusion, the DMSP synthesis and degradation showed significant spatiotemporal differences in the SML of the eastern China marginal seas, and were consistently more active in the SML than in the SSW.

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Section: Discussionmentioning

confidence: 99%

Highly active bacterial DMSP metabolism in the surface microlayer of the eastern China marginal seas

et al. 2023

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“…The observational data set of nutrient concentration and phytoplankton biomass are obtained from literatures (Shen et al., 2023; Wang, Xin, et al., 2018; Wang et al., 2022; Wei et al., 2015). The DMS data set for model validation are obtained from literature (Gao et al., 2021; Ma & Yang, 2023b; Shen et al., 2021; Xu et al., 2022; Yu et al., 2021). All figures in this manuscript were made with the Matlab (R2018a), available under license at https://mathworks.cn/.…”

Section: Data Availability Statementmentioning

confidence: 99%

“…In this manuscript, the in situ [DIN] and [Chl a] for the period of 1981-2016 in the Changjiang estuary and the [DIN] along the 36°N transect for the period of 1985-2006 were collected for decadal validation from literature (Wang, Xin, et al, 2018;Wei et al, 2015). Additionally, a mapping observations of contemporary ( 2007 We compiled an observational data set of surface [DMS] in the YECS for the period of 2007-2018, and Table 2 showed the cruise information of the in situ surface [DMS] that collected from literature, and each DMS sample was analyzed by a gas chromatograph equipped with a flame photometric detector (Gao et al, 2021;Ma & Yang, 2023b;Shen et al, 2021;Xu et al, 2022;Yu et al, 2021). To construct a gridded climatology field of DMS, the sea areas (from 119°E to 128°E and from 26°N to 40°N) was divided into 126 grids.…”

Section: In Situ Datamentioning

confidence: 99%

Marine Dimethyl Sulfide Fluxes in the Yellow and East China Seas: Scenario Variation During the 1980s–2090s and Its Drivers

2023

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Shedding light on the response of oceanic dimethyl sulfide flux (FDMS) on the sea shelf to multi‐pressures (intensified terrigenous nutrient inputs and climate change) is of great importance for regional aerosol budget. Here, we designed 4‐group experiments in scenario (the 1980s, 2010s, 2050s, and 2090s) for the Yellow and East China seas (YECS) based on climate change signals gained from CMIP6 and a 3‐dimension biophysical and geochemical model. Results show that the climatological annual mean of YECS's FDMS will rise from ∼6 μmol m−2 day−1 in the 1980s to >9 μmol m−2 day−1 in the 2090s under Shared Socioeconomic Pathway (SSP) 2−4.5/5−8.5 scenario, and with multi‐pressures, the FDMS peak in the 2050s is one season earlier when compared to that in the 1980s. The elevated terrigenous inputs affect the phytoplankton biomass and/or community on the inner shelf, leading to the rise and phenology change in the YECS's FDMS between the1980s and 2010s, while climate change has little impact. The influence of climate change on the FDMS is projected to increase in the 2050s; climate change will change seasonal pattern of the FDMS on the central part (middle and outer shelves) of East China Sea (CECS) under every SSP scenario. Thereinto, wind change exerts a crucial role, it will enhance summertime offshore transport and, accordingly, stimulate phytoplankton growth in summer changing the phenology of FDMS on the CECS.

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“…Measurements of DMS yield [80][81][82][83] vary widely (1-45%) depending on the region and the seasonal stage of the phytoplankton growth cycle. We note that DMS can also be produced by bacterial reduction of DMSO, the conversion by-product of DMS due to photolytic or bacterial oxidation [84], however the amount of DMS produced via this process does not seem to be significant [85].…”

Section: Role Of Heterotrophic Organismsmentioning

confidence: 99%

Climate Change Impacts on the Marine Cycling of Biogenic Sulfur: A Review

Jackson

Gabric

2022

Microorganisms

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A key component of the marine sulfur cycle is the climate-active gas dimethylsulfide (DMS), which is synthesized by a range of organisms from phytoplankton to corals, and accounts for up to 80% of global biogenic sulfur emissions. The DMS cycle starts with the intracellular synthesis of the non-gaseous precursor dimethylsulfoniopropionate (DMSP), which is released to the water column by various food web processes such as zooplankton grazing. This dissolved DMSP pool is rapidly turned over by microbially mediated conversion using two known pathways: demethylation (releasing methanethiol) and cleavage (producing DMS). Some of the formed DMS is ventilated to the atmosphere, where it undergoes rapid oxidation and contributes to the formation of sulfate aerosols, with the potential to affect cloud microphysics, and thus the regional climate. The marine phase cycling of DMS is complex, however, as heterotrophs also contribute to the consumption of the newly formed dissolved DMS. Interestingly, due to microbial consumption and other water column sinks such as photolysis, the amount of DMS that enters the atmosphere is currently thought to be a relatively minor fraction of the total amount cycled through the marine food web—less than 10%. These microbial processes are mediated by water column temperature, but the response of marine microbial assemblages to ocean warming is poorly characterized, although bacterial degradation appears to increase with an increase in temperature. This review will focus on the potential impact of climate change on the key microbially mediated processes in the marine cycling of DMS. It is likely that the impact will vary across different biogeographical regions from polar to tropical. For example, in the rapidly warming polar oceans, microbial communities associated with the DMS cycle will likely change dramatically during the 21st century with the decline in sea ice. At lower latitudes, where corals form an important source of DMS (P), shifts in the microbiome composition have been observed during thermal stress with the potential to alter the DMS cycle.

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Distribution and Dimethylsulfoniopropionate Degradation of Dimethylsulfoniopropionate‐Consuming Bacteria in the Yellow Sea and East China Sea

Abstract: DMSP can be cleaved to dimethylsulfide (DMS), a climatologically important gas, through biological and chemical pathways (Andreae, 1990). Marine bacteria play an important role in DMSP degradation (Reisch et al., 2011). Many marine bacterial isolates can degrade

Cited by 7 publications

References 71 publications

Highly active bacterial DMSP metabolism in the surface microlayer of the eastern China marginal seas

Highly active bacterial DMSP metabolism in the surface microlayer of the eastern China marginal seas

Marine Dimethyl Sulfide Fluxes in the Yellow and East China Seas: Scenario Variation During the 1980s–2090s and Its Drivers

Climate Change Impacts on the Marine Cycling of Biogenic Sulfur: A Review

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