Substrate uptake patterns shape niche separation in marine prokaryotic microbiome
- Author(s)
- Zihao Zhao, Chie Amano, Thomas Reinthaler, Mónica V Orellana, Gerhard J Herndl
- Abstract
Marine heterotrophic prokaryotes primarily take up ambient substrates using transporters. The patterns of transporters targeting particular substrates shape the ecological role of heterotrophic prokaryotes in marine organic matter cycles. Here, we report a size-fractionated pattern in the expression of prokaryotic transporters throughout the oceanic water column due to taxonomic variations, revealed by a multi-"omics" approach targeting ATP-binding cassette (ABC) transporters and TonB-dependent transporters (TBDTs). Substrate specificity analyses showed that marine SAR11, Rhodobacterales, and Oceanospirillales use ABC transporters to take up organic nitrogenous compounds in the free-living fraction, while Alteromonadales, Bacteroidetes, and Sphingomonadales use TBDTs for carbon-rich organic matter and metal chelates on particles. The expression of transporter proteins also supports distinct lifestyles of deep-sea prokaryotes. Our results suggest that transporter divergency in organic matter assimilation reflects a pronounced niche separation in the prokaryote-mediated organic matter cycles.
- Organisation(s)
- Functional and Evolutionary Ecology
- External organisation(s)
- Institute for Systems Biology, Royal Netherlands Institute for Sea Research, University of Washington
- Journal
- Science Advances
- Volume
- 10
- ISSN
- 2375-2548
- DOI
- https://doi.org/10.1126/sciadv.adn5143
- Publication date
- 05-2024
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 106021 Marine biology
- Keywords
- Sustainable Development Goals
- SDG 14 - Life Below Water
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/substrate-uptake-patterns-shape-niche-separation-in-marine-prokaryotic-microbiome(25778bc7-2242-4a83-b502-d16dd6f7bfd5).html