Elevated pCO₂ Level Affects the Extracellular Polymer Metabolism of Phaeodactylum tricornutum.

ABSTRACT: Extracellular polymeric substances (EPS) play an important role in diatom physiology and carbon biogeochemical cycling in marine ecosystems. Both the composition and yield of EPS in diatom cells can vary with environmental changes. However, information on intracellular pathways and controls of both biochemical and genetic of EPS is limited. Further, how such changes would affect their critical ecological roles in marine systems is also unclear. Here, we evaluated the physiological characteristics, EPS yields, EPS compositions, and gene expression levels of Phaeodactylum tricornutum under elevated pCO₂ levels. Genes and pathways related to EPS metabolism in P. tricornutum were identified. Carbohydrate yields in different EPS fractions increased with elevated

SUBMITTER: Zhang W 

PROVIDER: S-EPMC7064563 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature