Light Modulates the Physiology of Nonphototrophic Actinobacteria.

ABSTRACT: Light is a source of energy and an environmental cue that is available in excess in most surface environments. In prokaryotic systems, conversion of light to energy by photoautotrophs and photoheterotrophs is well understood, but the conversion of light to information and the cellular response to that information have been characterized in only a few species. Our goal was to explore the response of freshwater Actinobacteria, which are ubiquitous in illuminated aquatic environments, to light. We found that Actinobacteria without functional photosystems grow faster in the light, likely because sugar transport and metabolism are upregulated in the light. Based on the action spectrum of the growth effect and comparisons of the genomes of three Actinobacteria with this grow

SUBMITTER: Maresca JA 

PROVIDER: S-EPMC6482932 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature