NDLI: Lipid remodelling is a widespread strategy in marine heterotrophic bacteria upon phosphorus deficiency

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Lipid remodelling is a widespread strategy in marine heterotrophic bacteria upon phosphorus deficiency

Content Provider	PubMed Central
Author	Sebastián, Marta Smith, Alastair F. González, José M. Fredricks, Helen F. Mooy, Benjamin Van Michal, Koblížek Brandsma, Joost Koster, Grielof Mestre, Mireia Behzad, Mostajir Pitta, Paraskevi Postle, Anthony D. Sánchez, Pablo Gasol, Josep M. Scanlan, David J. Chen, Yin
Copyright Year	2016
Abstract	Upon phosphorus (P) deficiency, marine phytoplankton reduce their requirements for P by replacing membrane phospholipids with alternative non-phosphorus lipids. It was very recently demonstrated that a SAR11 isolate also shares this capability when phosphate starved in culture. Yet, the extent to which this process occurs in other marine heterotrophic bacteria and in the natural environment is unknown. Here, we demonstrate that the substitution of membrane phospholipids for a variety of non-phosphorus lipids is a conserved response to P deficiency among phylogenetically diverse marine heterotrophic bacteria, including members of the Alphaproteobacteria and Flavobacteria. By deletion mutagenesis and complementation in the model marine bacterium Phaeobacter sp. MED193 and heterologous expression in recombinant Escherichia coli, we confirm the roles of a phospholipase C (PlcP) and a glycosyltransferase in lipid remodelling. Analyses of the Global Ocean Sampling and Tara Oceans metagenome data sets demonstrate that PlcP is particularly abundant in areas characterized by low phosphate concentrations. Furthermore, we show that lipid remodelling occurs seasonally and responds to changing nutrient conditions in natural microbial communities from the Mediterranean Sea. Together, our results point to the key role of lipid substitution as an adaptive strategy enabling heterotrophic bacteria to thrive in the vast P-depleted areas of the ocean.
Related Links	http://dx.doi.org/10.1038/ismej.2015.172
Ending Page	978
Page Count	11
Starting Page	968
File Format	PDF
ISSN	17517370
e-ISSN	17517370
Journal	The ISME Journal
Issue Number	4
Volume Number	10
Language	English
Publisher	Nature Publishing Group
Publisher Date	2016-04-01
Access Restriction	Open
Rights Holder	Nature Publishing Group
Subject Keyword	Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Ecology, Evolution, Behavior and Systematics Microbiology

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