Stoichiometric flexibility in diverse aquatic heterotrophic bacteria is coupled to differences in cellular phosphorus quotas

Frontiers in Microbiology
Casey M Godwin, James B Cotner

Abstract

It is frequently presumed that heterotrophic bacteria from aquatic environments have low carbon (C) content, high phosphorus (P) content, and maintain homeostasis at low C:P in their biomass. Dissolved and particulate organic matter from primary producers in terrestrial and aquatic environments typically has high C:P ratios, suggesting that heterotrophic bacteria consuming this resource experience stoichiometric imbalance in C and P. The strength of elemental homeostasis is important for understanding how heterotrophic bacteria couple C and P cycles in response to environmental change, yet these generalizations are based upon data from only a few species that might not represent the physiology of bacteria in freshwaters. However, recent research has indicated that some strains of bacteria isolated from freshwaters have flexible C:P stoichiometry and can acclimate to changes in resource C:P. Although it is apparent that strains differ in their biomass C:P and flexibility, the basis for these characteristics has not been explained. We evaluated biomass C:P homeostasis in 24 strains of bacteria isolated from temperate lakes using a uniform relative growth rate in chemostats. Overall, the strains exhibited a range of homeostatic re...Continue Reading

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Citations

Dec 24, 2015·Frontiers in Microbiology·Jürg B LogueJérôme Comte
May 10, 2017·FEMS Microbiology Ecology·Kathleen TrautweinRalf Rabus
Aug 3, 2018·Proceedings. Biological Sciences·Martino E MalerbaDustin J Marshall
Oct 6, 2020·Journal of Environmental Quality·William M RobertsPhilip M Haygarth
Aug 2, 2017·Ecology Letters·Stefano ManzoniHana Šantrůčková
Sep 26, 2017·Frontiers in Microbiology·Katherine N PhillipsJames B Cotner
May 11, 2017·Frontiers in Microbiology·Punidan D JeyasinghJames B Cotner
Oct 2, 2021·The ISME Journal·Kyle Mason-JonesWim H van der Putten

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BETA
16S sequencing

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Basic Local Alignment Search Tool ( BLAST
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