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Philos Trans R Soc Lond B Biol Sci. 2017 Sep 5;372(1728). pii: 20160406. doi: 10.1098/rstb.2016.0406.

The effects of phosphorus limitation on carbon metabolism in diatoms.

Author information

1
Department of Biology, Norwegian University of Science and Technology, 7491 Trondheim, Norway.
2
Department of Biology, Norwegian University of Science and Technology, 7491 Trondheim, Norway atle.m.bones@ntnu.no.

Abstract

Phosphorus is an essential element for life, serving as an integral component of nucleic acids, lipids and a diverse range of other metabolites. Concentrations of bioavailable phosphorus are low in many aquatic environments. Microalgae, including diatoms, apply physiological and molecular strategies such as phosphorus scavenging or recycling as well as adjusting cell growth in order to adapt to limiting phosphorus concentrations. Such strategies also involve adjustments of the carbon metabolism. Here, we review the effect of phosphorus limitation on carbon metabolism in diatoms. Two transcriptome studies are analysed in detail, supplemented by other transcriptome, proteome and metabolite data, to gain an overview of different pathways and their responses. Phosphorus, nitrogen and silicon limitation responses are compared, and similarities and differences discussed. We use the current knowledge to propose a suggestive model for the carbon flow in phosphorus-replete and phosphorus-limited diatom cells.This article is part of the themed issue 'The peculiar carbon metabolism in diatoms'.

KEYWORDS:

carbon metabolism; diatom; phosphorus; proteome; transcriptome

PMID:
28717016
PMCID:
PMC5516115
DOI:
10.1098/rstb.2016.0406
[Indexed for MEDLINE]
Free PMC Article

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