Diverse CO₂-Induced Responses in Physiology and Gene Expression among Eukaryotic Phytoplankton.

ABSTRACT: With rising atmospheric CO₂, phytoplankton face shifts in ocean chemistry including increased dissolved CO₂ and acidification that will likely influence the relative competitive fitness of different phytoplankton taxa. Here we compared the physiological and gene expression responses of six species of phytoplankton including a diatom, a raphidophyte, two haptophytes, and two dinoflagellates to ambient (~400 ppm) and elevated (~800 ppm) CO₂. Dinoflagellates had significantly slower growth rates and higher, yet variable, chlorophyll a per cell under elevated CO₂. The other phytoplankton tended to have increased growth rates and/or decreased chlorophyll a per cell. Carbon and nitrogen partitioning of cells shifted under elevated CO

SUBMITTER: Hennon GMM 

PROVIDER: S-EPMC5742204 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature