Publications by authors named "Jing-Guang Lai"
Dimethyl sulfide (DMS) and dimethylsulfoniopropionate (DMSP) are important sulfur compounds influenced by community assemblages of plankton. The distributions of DMS, DMSP, DMSP lyase activity (DLA), DMSP-consuming bacteria (DCB), and community structures of phytoplankton and zooplankton were investigated during summer in the Bohai Sea and Yellow Sea. The variety ranges of DMS, dissolved DMSP (DMSP), and particulate DMSP (DMSP) concentrations in the surface seawater were 1.
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- The distribution of dimethylsulfoniopropionate (DMSP) and its breakdown product dimethyl sulfide (DMS) in the South China Sea is influenced by the community structures of bacteria, phytoplankton, and zooplankton.
- Measurements showed that DMS concentration is linked to the abundance of DMSP-consuming bacteria and their activity, suggesting they're pivotal for DMS production.
- The study also found that copepods and the SAR11 bacterial clade play significant roles in influencing DMS levels, especially under conditions like high dissolved inorganic nitrogen from cold vortices.
The effects of ocean acidification and solar radiation on marine organisms have received increasing attention. Coccolithophores are a major producer of dimethylsulfoniopropionate (DMSP), which is a precursor of dimethylsulfide (DMS), a volatile biogenic active gas related to climate. Here, we investigated the individual and combined effects of elevated CO and ultraviolet radiation (UVR) on growth, DMS, and DMSP production of Emiliania huxleyi.
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- Microplastics pollution negatively impacts the marine copepod Tigriopus japonicus, leading to decreased feeding, reproduction, and survival rates, with significant dose-response effects observed for polyethylene and polyamide-nylon 6 microplastics.
- Copepod grazing normally stimulates the release of dimethylsulfide (DMS) from phytoplankton, but exposure to microplastics reduces this DMS production due to lower ingestion rates.
- The study highlights the potential disruption of the sulfur biogeochemical cycle in marine ecosystems as a result of microplastic contamination affecting feeding behaviors in copepods.