Transition from exponential to linear photoautotrophic growth changes the physiology of Synechocystis sp. PCC 6803.

ABSTRACT: Phototrophic microorganisms like cyanobacteria show growth curves in batch culture that differ from the corresponding growth curves of chemotrophic bacteria. Instead of the usual three phases, i.e., lag-, log-, and stationary phase, phototrophs display four distinct phases. The extra growth phase is a phase of linear, light-limited growth that follows the exponential phase and is often ignored as being different. Results of this study demonstrate marked growth phase-dependent alterations in the photophysiology of the cyanobacterium Synechocystis sp. PCC 6803 between cells harvested from the exponential and the linear growth phase. Notable differences are a gradual shift in the energy transfer of the light-harvesting phycobilisomes to the photosystems and a distinct change in the redox stat

SUBMITTER: Schuurmans RM 

PROVIDER: S-EPMC5357262 | biostudies-literature | 2017 Apr

REPOSITORIES: biostudies-literature