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A pigment-binding protein essential for regulation of photosynthetic light harvesting
Results indicate that PsbS, an intrinsic chlorophyll-binding protein of photosystem II, is necessary for nonphotochemical quenching but not for efficient light harvesting and photosynthesis, a finding that has implications for the functional evolution of pigment-binding proteins.
Arabidopsis Mutants Define a Central Role for the Xanthophyll Cycle in the Regulation of Photosynthetic Energy Conversion
The results, in conjunction with the analysis of npq mutants of Chlamydomonas, suggest that the role of the xanthophyll cycle in nonphotochemical quenching has been conserved, although different photosynthetic eukaryotes rely on the xathletic cycle to different extents for the dissipation of excess absorbed light energy.
The Chlamydomonas Genome Reveals the Evolution of Key Animal and Plant Functions
Analyses of the Chlamydomonas genome advance the understanding of the ancestral eukaryotic cell, reveal previously unknown genes associated with photosynthetic and flagellar functions, and establish links between ciliopathy and the composition and function of flagella.
An ancient light-harvesting protein is critical for the regulation of algal photosynthesis
Data indicate that plants and algae use different proteins to dissipate harmful excess light energy and protect the photosynthetic apparatus from damage, demonstrating that LHCSR is required for survival in a dynamic light environment.
Three Acyltransferases and Nitrogen-responsive Regulator Are Implicated in Nitrogen Starvation-induced Triacylglycerol Accumulation in Chlamydomonas*
Time course analyses suggest than a SQUAMOSA promoter-binding protein domain transcription factor, whose mRNA increases precede that of lipid biosynthesis genes like DGAT1, is a candidate regulator of the nitrogen deficiency responses.
Chlamydomonas Xanthophyll Cycle Mutants Identified by Video Imaging of Chlorophyll Fluorescence Quenching.
The photosynthetic apparatus in plants is protected against oxidative damage by processes that dissipate excess absorbed light energy as heat within the light-harvesting complexes. This dissipation
The regulation of photosynthetic electron transport during nutrient deprivation in Chlamydomonas reinhardtii.
These findings establish a common suite of alterations in photosynthetic electron transport that results in decreased linear electron flow when C. reinhardtii is limited for either P or S.
An Indexed, Mapped Mutant Library Enables Reverse Genetics Studies of Biological Processes in Chlamydomonas reinhardtii[OPEN]
High-throughput methods are developed that enable easy maintenance of tens of thousands of Chlamydomonas strains by propagation on agar media and by cryogenic storage and identify mutagenic insertion sites and physical coordinates in collections, and validate the insertion sites in pools of mutants by obtaining >500 bp of flanking genomic sequences.
A small polypeptide triggers complete degradation of light‐harvesting phycobiliproteins in nutrient‐deprived cyanobacteria.
NblA is necessary, and may be sufficient, for the degradation of phycobilisomes under adverse environmental conditions, and further investigation of the mechanism by which nblA causes phyCobilisome destruction may reveal general principles that govern the specificity of macromolecular complex degradation.
The roles of specific xanthophylls in photoprotection.
Results strongly suggest that alpha-carotene-derived xanthophylls such as lutein, which are structural components of the subunits of the light-harvesting complexes, contribute to the dissipation of excess absorbed light energy and the protection of plants from photo-oxidative damage.