The first part of this review discusses effects of changing wavelengths of light on the biosynthesis of the phycobilisomes (PBS), dominant light harvesting complexes of Cyanobacteria.
First-pass extracted concept
phycobilisome
Candidate: toolkit item1 source documents4 linked claims
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Aliases
PBS, phycobilisomes
Evidence Snippets
Supporting Sources
Linked Claims
Complementary chromatic adaptation reflects altered phycobilisome pigment-protein composition in response to environmental light quality.
Quoted textsource-backed
This light control of pigmentation was termed complementary chromatic adaptation (CCA). Bennett and Bogorad showed that CCA was the result of altered PBS pigment-protein composition.
Phycobilisomes are dominant cyanobacterial light-harvesting complexes composed of core and rod domains containing pigmented and nonpigmented polypeptides.
Quoted textsource-backed
PBS are peripheral membrane complexes in Cyanobacteria that efficiently harvest light energy and transfer the energy to photosynthetic reaction centers. PBS, which can comprise 30% of the cellular protein, are organized into two structural domains, the core and rods.
In Fremyella diplosiphon, red light favors phycocyanin-rich phycobilisomes whereas green light favors phycoerythrin-rich phycobilisomes, enabling efficient absorption of prevalent wavelengths.
Quoted textsource-backed
In red light the organism has almost no PE... If the Cyanobacterium is moved to green light, new PBS are synthesized with rods having single PC hexamers and up to three PE hexamers... because PC absorbs RL (λmax = 620 nm) and PE absorbs GL (λmax = 560 nm), these changes facilitate efficient absorption of prevalent wavelengths of light in the environment.
This review focuses on cyanobacterial light-influenced changes in light-harvesting structure and biosynthesis, especially phycobilisome regulation and integration of light intensity with nutrient availability.
Quoted textsource-backed
This review focuses on two specific aspects of light-influenced processes in Cyanobacteria; both concern changes in light harvesting structure and biosynthesis.