title: Seeing new light: recent insights into the occurrence and regulation of chromatic acclimation in cyanobacteria.
abstract: Cyanobacteria exhibit a form of photomorphogenesis termed chromatic acclimation (CA), which involves tuning metabolism and physiology to external light cues, with the most readily recognized acclimation being the alteration of pigmentation. Historically, CA has been represented by three types that occur in organisms which synthesize green-light-absorbing phycoerythrin (PE) and red-light-absorbing phycocyanin (PC). The distinct CA types depend upon whether organisms adjust levels of PE (type II), both PE and PC (type III, also complementary chromatic acclimation), or neither (type I) in response to red or green wavelengths. Recently new forms of CA have been described which include responses to blue and green light (type IV) or far-red light (FaRLiP). Here, the molecular bases of distinct forms of CA are discussed.
authors.affiliation: Michigan State University, Department of Energy-Plant Research Laboratory, Department of Biochemistry and Molecular Biology, Department of Microbiology and Molecular Genetics, East Lansing, MI 48824, United States. Electronic address: montg133@msu.edu.
authors.forename: Beronda L
authors.initials: BL
authors.lastname: Montgomery
mesh_terms: D001426:Bacterial Proteins / Q000378:metabolism; D000458:Cyanobacteria / Q000378:metabolism* / Q000528:radiation effects; D008027:Light; D010798:Phycocyanin / Q000378:metabolism; D010799:Phycoerythrin / Q000378:metabolism; D010858:Pigmentation / Q000528:radiation effects
chemical_list: D001426:Bacterial Proteins; D010798:Phycocyanin; D010799:Phycoerythrin