Phylogenetic patterns in the microbial response to resource availability: amino acid incorporation in San Francisco Bay

ABSTRACT: Aquatic microorganisms are typically identified as either oligotrophic or copiotrophic, representing trophic strategies adapted to low or high nutrient concentrations, respectively. Here, we sought to take steps towards identifying these and additional adaptations to nutrient availability with a quantitative analysis of microbial resource use in mixed communities. We incubated an estuarine microbial community with stable isotope labeled amino acids (AAs) at concentrations spanning three orders of magnitude, followed by taxon-specific quantitation of isotopic incorporation using NanoSIMS analysis of high-density microarrays. The resulting data revealed that trophic response to AA availability falls along a continuum between copiotrophy and oligotrophy, and high and low activity. To illustra

ORGANISM(S): marine metagenome

SUBMITTER: Xavier Mayali 

PROVIDER: E-GEOD-56119 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress