Temporal phosphate gradients reveal diverse acclimation responses in phytoplankton phosphate uptake.

ABSTRACT: Phytoplankton face environmental nutrient variations that occur in the dynamic upper layers of the ocean. Phytoplankton cells are able to rapidly acclimate to nutrient fluctuations by adjusting their nutrient-uptake system and metabolism. Disentangling these acclimation responses is a critical step in bridging the gap between phytoplankton cellular physiology and community ecology. Here, we analyzed the dynamics of phosphate (P) uptake acclimation responses along different P temporal gradients by using batch cultures of the diatom Phaeodactylum tricornutum. We employed a multidisciplinary approach that combined nutrient-uptake bioassays, transcriptomic analysis, and mathematical models. Our results indicated that cells increase their maximum nutrient-uptake rate (V_max) both in r

SUBMITTER: Caceres C 

PROVIDER: S-EPMC6794288 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature