Whole-cell response to nitrogen deprivation in the diatom Phaeodactylum tricornutum.

ABSTRACT: Algal growth is strongly affected by nitrogen (N) availability. Diatoms, an ecologically important group of unicellular algae, have evolved several acclimation mechanisms to cope with N deprivation. In this study, we integrated physiological data with transcriptional and metabolite data to reveal molecular and metabolic modifications in N-deprived conditions in the marine diatom Phaeodactylum tricornutum. Physiological and metabolite measurements indicated that the photosynthetic capacity and chlorophyll content of the cells decreased, while neutral lipids increased in N-deprived cultures. Global gene expression analysis showed that P. tricornutum responded to N deprivation through an increase in N transport, assimilation, and utilization of organic N resources. Following N deprivation, re

SUBMITTER: Alipanah L 

PROVIDER: S-EPMC4588885 | biostudies-literature | 2015 Oct

REPOSITORIES: biostudies-literature