Impact of SliP4 deletion on the high-light acclimation in Synechocystis sp. PCC 6803.

ABSTRACT: SliP4 is a small, 37 amino acids protein that is strongly induced when the cyanobacterium Synechocystis sp. PCC 6803 is exposed to high-light (HL) conditions. Deletion mutants manifest a light-sensitive phenotype due to impaired cyclic electron flow and state transitions. In this study, we aimed to investigate the consequences of SliP4 deficiency on the process of high-light acclimation on systems level. Transcriptomic data revealed that the deletion mutant ΔsliP4 exhibited a wild-type-like gene regulatory response 30 minutes after the light intensity was increased from 50 to 250 μmol photons m^-2 s^-1, a process that is controlled by the RpaB-PsrR1 system. Proteome analysis showed consistent expression changes of many HL-regulated proteins. Metabolome ana

SUBMITTER: Alvarenga-Lucius L 

PROVIDER: S-EPMC12850537 | biostudies-literature | 2026

REPOSITORIES: biostudies-literature