The University of Southampton
University of Southampton Institutional Repository

Photoheterotrophy in marine prokaryotes

Photoheterotrophy in marine prokaryotes
Photoheterotrophy in marine prokaryotes
Despite considerable advances in the understanding of the various microbial photoheterotrophic mechanisms, the role of solar radiation in the metabolism of bacterioplankton in the ocean is difficult to assess. It is already apparent that rates of CO2 fixation by prokaryotic cells may be only a part of the picture. Photophosphorylation is difficult to differentiate from respiratory phosphorylation and other types of ATP synthesis. Solar energy could by-pass ATP synthesis, instead being used to generate a proton-motive force, which in turn could be directly used for cell motility or even for importing molecules into cells. In addition, photoheterotrophic prokaryotes could actively regulate intake and use of solar energy for different metabolic functions depending on the energetic demands of the cell. The factors listed above hence require consideration when solar energy input into metabolism of oceanic photoheterotrophic prokaryotes is experimentally quantified and numerically modelled.
0142-7873
933-938
Zubkov, Mikhail V.
b1dfb3a0-bcff-430c-9031-358a22b50743
Zubkov, Mikhail V.
b1dfb3a0-bcff-430c-9031-358a22b50743

Zubkov, Mikhail V. (2009) Photoheterotrophy in marine prokaryotes. Journal of Plankton Research, 31 (9), 933-938. (doi:10.1093/plankt/fbp043).

Record type: Article

Abstract

Despite considerable advances in the understanding of the various microbial photoheterotrophic mechanisms, the role of solar radiation in the metabolism of bacterioplankton in the ocean is difficult to assess. It is already apparent that rates of CO2 fixation by prokaryotic cells may be only a part of the picture. Photophosphorylation is difficult to differentiate from respiratory phosphorylation and other types of ATP synthesis. Solar energy could by-pass ATP synthesis, instead being used to generate a proton-motive force, which in turn could be directly used for cell motility or even for importing molecules into cells. In addition, photoheterotrophic prokaryotes could actively regulate intake and use of solar energy for different metabolic functions depending on the energetic demands of the cell. The factors listed above hence require consideration when solar energy input into metabolism of oceanic photoheterotrophic prokaryotes is experimentally quantified and numerically modelled.

This record has no associated files available for download.

More information

Published date: September 2009

Identifiers

Local EPrints ID: 67547
URI: http://eprints.soton.ac.uk/id/eprint/67547
ISSN: 0142-7873
PURE UUID: 55d13b00-38d5-4dcb-9c4b-487da15da0c3

Catalogue record

Date deposited: 24 Aug 2009
Last modified: 13 Mar 2024 18:53

Export record

Altmetrics

Contributors

Author: Mikhail V. Zubkov

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×