Independent evolution of the thioredoxin system in photosynthetic Paulinella species.

ABSTRACT: Redox regulation allows phytoplankton to monitor and stabilize metabolic pathways under changing conditions¹. In plastids, the thioredoxin (TRX) system is linked to photosynthetic electron transport and fine tuning of metabolic pathways to fluctuating light levels. Expansion of the number of redox signal transmitters and their protein targets, as seen in plants, is believed to increase cell robustness². In this study, we searched for genes related to redox regulation in the photosynthetic amoeba Paulinella micropora KR01 (hereafter, KR01). The genus Paulinella includes testate filose amoebae, in which a single clade acquired a photosynthetic organelle, the chromatophore, from an alpha-cyanobacterial donor³. This independent primary endosymbiosis occurred re

SUBMITTER: Lhee D 

PROVIDER: S-EPMC8711088 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature