Responses of Marine Diatom Skeletonema marinoi to Nutrient Deficiency: Programmed Cell Death.

ABSTRACT: Diatoms are important phytoplankton and contribute greatly to the primary productivity of marine ecosystems. Despite the ecological significance of diatoms and the importance of programmed cell death (PCD) in the fluctuation of diatom populations, little is known about the molecular mechanisms of PCD triggered by different nutrient stresses. Here we describe the physiological, morphological, biochemical, and molecular changes in response to low levels of nutrients in the ubiquitous diatom Skeletonema marinoi The levels of gene expression involved in oxidation resistance and PCD strongly increased upon nitrogen (N) or phosphorus (P) starvation. The enzymatic activity of caspase 3-like protein also increased. Differences in mRNA levels and protein activities were observed between the low-N a

SUBMITTER: Wang H 

PROVIDER: S-EPMC6974647 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature