title: Genome-wide analysis of the family of light-harvesting chlorophyll a/b-binding proteins in Arabidopsis and rice.
abstract: Light-harvesting antenna system possesses an inherent property of photoprotection. The single-helix proteins found in cyanobacteria play role in photoprotection and/or pigment metabolism. The photoprotective functions are also manifested by the two- and four-helix proteins. The photoprotection mechanism evolved earlier to the mechanism of light-harvesting of the antenna complex. Here, the light-harvesting complex genes of photosystems I and II from Arabidopsis are enlisted, and almost similar set of genes are identified in rice. Also, the three-helix early light-inducible proteins (ELIPs), two-helix stress-enhanced proteins (SEPs), and one-helix high light-inducible proteins [one-helix proteins (OHPs)] are identified in rice. Interestingly, two independent genomic loci encoding PsbS protein are also identified with implications on additional mode of non-photochemical quenching (NPQ) mechanism in rice. A few additional LHC-related genes are also identified in rice (LOC_Os09g12540, LOC_Os02g03330). This is the first report of identification of light-harvesting complex genes and light-inducible genes in rice.
authors.affiliation: Department of Botany, Kakatiya University, Warangal, Andhara Pradesh, India. pavan_umate@rediffmail.com
authors.forename: Pavan
authors.initials: P
authors.lastname: Umate
mesh_terms: D000595:Amino Acid Sequence; D017360:Arabidopsis / Q000235:genetics* / Q000378:metabolism; D002734:Chlorophyll / Q000378:metabolism*; D000077194:Chlorophyll A; D019143:Evolution, Molecular; D018745:Genome, Plant; D045342:Light-Harvesting Protein Complexes / Q000737:chemistry / Q000235:genetics* / Q000378:metabolism; D008969:Molecular Sequence Data; D012275:Oryza / Q000235:genetics* / Q000378:metabolism; D011485:Protein Binding; D017386:Sequence Homology, Amino Acid
chemical_list: D045342:Light-Harvesting Protein Complexes; D002734:Chlorophyll; C037184:chlorophyll b; D000077194:Chlorophyll A