Light regulation of pigment and photosystem biosynthesis in cyanobacteria

Curr Opin Plant Biol. 2017 Jun:37:24-33. doi: 10.1016/j.pbi.2017.03.006. Epub 2017 Apr 6.

Abstract

Most cyanobacteria are obligate oxygenic photoautotrophs, and thus their growth and survival is highly dependent on effective utilization of incident light. Cyanobacteria have evolved a diverse set of phytochromes and cyanobacteriochromes (CBCRs) that allow cells to respond to light in the range from ∼300nm to ∼750nm. Together with associated response regulators, these photosensory proteins control many aspects of cyanobacterial physiology and metabolism. These include far-red light photoacclimation (FaRLiP), complementary chromatic acclimation (CCA), low-light photoacclimation (LoLiP), photosystem content and stoichiometry (long-term adaptation), short-term acclimation (state transitions), circadian rhythm, phototaxis, photomorphogenesis/development, and cellular aggregation. This minireview highlights some discoveries concerning phytochromes and CBCRs as well as two acclimation processes that improve light harvesting and energy conversion under specific irradiance conditions: FaRLiP and CCA.

Publication types

  • Review
  • Research Support, U.S. Gov't, Non-P.H.S.
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Bacterial Proteins / metabolism
  • Circadian Rhythm / radiation effects
  • Cyanobacteria / metabolism*
  • Cyanobacteria / radiation effects*
  • Light*
  • Phytochrome / metabolism

Substances

  • Bacterial Proteins
  • Phytochrome