Phytate as a Phosphorus Nutrient with Impacts on Iron Stress-Related Gene Expression for Phytoplankton: Insights from the Diatom Phaeodactylum tricornutum.

ABSTRACT: Phytoplankton have evolved a capability to acquire phosphorus (P) from dissolved organic phosphorus (DOP) since the preferred form, dissolved inorganic phosphate (DIP, or P_i), is often limited in parts of the ocean. Phytic acid (PA) is abundantly synthesized in plants and rich in excreta of animals, potentially enriching the DOP pool in coastal oceans. However, whether and how PA can be used by phytoplankton are poorly understood. Here, we investigated PA utilization and underlying metabolic pathways in the diatom model Phaeodactylum tricornutum. The physiological results showed that P. tricornutum could utilize PA as a sole source of P nutrient to support growth. Meanwhile, the replacement of PA for DIP also caused changes in multiple cellular processes, such as i

SUBMITTER: Li J 

PROVIDER: S-EPMC8788711 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature