Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Catabolism of dimethylsulfoniopropionate (DMSP) by marine bacteria has important impacts on the global sulfur cycle and climate. However, whether and how members of most oligotrophic bacterial groups participate in DMSP metabolism in marine environments remains largely unknown. In this study, by characterizing culturable strains, we have revealed that bacteria of the SAR92 clade, an abundant oligotrophic group of in coastal seawater, can catabolize DMSP through the DMSP lyase DddD-mediated cleavage pathway and/or the DMSP demethylase DmdA-mediated demethylation pathway to produce climate-active gases dimethylsulfide and methanethiol. Additionally, we found that SAR92 clade bacteria capable of catabolizing DMSP are widely distributed in global oceans. These results indicate that SAR92 clade bacteria are potentially important DMSP degraders and sources of climate-active gases in marine environments that have been overlooked, contributing to a better understanding of the roles and mechanisms of the oligotrophic bacteria in oceanic DMSP degradation.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10746254 | PMC |
| http://dx.doi.org/10.1128/mbio.01467-23 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Marine Antarctic microbial communities inhabit highly dynamic and extreme environments, characterized by deep vertical mixing, seasonal ice cover, and fluctuating light availability. Understanding the interplay between phytoplankton and bacterioplankton in such systems is critical to elucidate ecosystem function and biogeochemical cycling in the Southern Ocean. The current study presents a comprehensive three-year high-throughput analysis of phytoplankton-bacterioplankton interactions in the waters of Wilhelm Archipelago, elucidating interseasonal and interannual microbial dynamics.
View Article and Find Full Text PDFParticle-attached bacteria act as gatekeepers in the decomposition of complex phytoplankton polysaccharides.
Microbiome
February 2024
Max Planck Institute for Marine Microbiology, Celsiusstraße 1, 28359, Bremen, Germany.
Article Synopsis
- - Marine microalgae, or phytoplankton, are crucial in global carbon cycling as they fix nearly half of the world's carbon dioxide through photosynthesis, especially during significant blooms where their biomass is composed mainly of polysaccharides.
- - A study analyzed polysaccharide-degrading bacteria during a phytoplankton bloom, revealing distinct groups of bacteria based on size: smaller free-living bacteria and larger particle-attached ones, with the latter showing greater diversity and adaptive changes over time.
- - The research produced 305 species-level genomes, including 152 from particle-attached bacteria, many of which were novel to the area; these genomes indicated a greater capacity for utilizing a wider range of polysaccharides, showcasing their
A timeline of bacterial and archaeal diversification in the ocean.
Elife
December 2023
Department of Biological Sciences, Virginia Tech, Blacksburg, United States.
Microbial plankton play a central role in marine biogeochemical cycles, but the timing in which abundant lineages diversified into ocean environments remains unclear. Here, we reconstructed the timeline in which major clades of bacteria and archaea colonized the ocean using a high-resolution benchmarked phylogenetic tree that allows for simultaneous and direct comparison of the ages of multiple divergent lineages. Our findings show that the diversification of the most prevalent marine clades spans throughout a period of 2.
View Article and Find Full Text PDFSAR92 clade bacteria are potentially important DMSP degraders and sources of climate-active gases in marine environments.
mBio
December 2023
State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China.
Article Synopsis
- Marine bacteria, particularly those from the SAR92 clade, can break down dimethylsulfoniopropionate (DMSP), impacting the global sulfur cycle and climate.
- The research identified two main pathways for DMSP degradation, involving DMSP lyase (DddD) and DMSP demethylase (DmdA), which produce gases like dimethylsulfide and methanethiol.
- The findings highlight the widespread presence of SAR92 bacteria in oceans and their significance as DMSP degraders and climate-active gas sources, enhancing our understanding of oligotrophic bacteria's roles in marine environments.
Biogeographic Analysis Suggests Two Types of Planktonic Prokaryote Communities in the Barents Sea.
Biology (Basel)
October 2023
Kurchatov Centre for Genome Research, National Research Centre "Kurchatov Institute", 123182 Moscow, Russia.
The Barents Sea is one of the most rapidly changing Arctic regions, with an unprecedented sea ice decline and increase in water temperature and salinity. We have studied the diversity of prokaryotic communities using 16S metabarcoding in the western and northeastern parts of the Barents Sea along the Kola Section and the section from Novaya Zemlya to Franz Joseph Land. The hypothesis-independent clustering method revealed the existence of two distinct types of communities.
View Article and Find Full Text PDF