title: Cyanophora paradoxa genome elucidates origin of photosynthesis in algae and plants.
abstract: The primary endosymbiotic origin of the plastid in eukaryotes more than 1 billion years ago led to the evolution of algae and plants. We analyzed draft genome and transcriptome data from the basally diverging alga Cyanophora paradoxa and provide evidence for a single origin of the primary plastid in the eukaryote supergroup Plantae. C. paradoxa retains ancestral features of starch biosynthesis, fermentation, and plastid protein translocation common to plants and algae but lacks typical eukaryotic light-harvesting complex proteins. Traces of an ancient link to parasites such as Chlamydiae were found in the genomes of C. paradoxa and other Plantae. Apparently, Chlamydia-like bacteria donated genes that allow export of photosynthate from the plastid and its polymerization into storage polysaccharide in the cytosol.
authors.affiliation: Department of Ecology, Evolution, and Natural Resources, Rutgers University, New Brunswick, NJ 08901, USA.
authors.forename: Dana C
authors.initials: DC
authors.lastname: Price
authors.forename: Cheong Xin
authors.initials: CX
authors.lastname: Chan
authors.forename: Hwan Su
authors.initials: HS
authors.lastname: Yoon
authors.forename: Eun Chan
authors.initials: EC
authors.lastname: Yang
authors.forename: Huan
authors.initials: H
authors.lastname: Qiu
authors.forename: Andreas P M
authors.initials: AP
authors.lastname: Weber
authors.forename: Rainer
authors.initials: R
authors.lastname: Schwacke
authors.forename: Jeferson
authors.initials: J
authors.lastname: Gross
authors.forename: Nicolas A
authors.initials: NA
authors.lastname: Blouin
authors.forename: Chris
authors.initials: C
authors.lastname: Lane
authors.forename: Adrián
authors.initials: A
authors.lastname: Reyes-Prieto
authors.forename: Dion G
authors.initials: DG
authors.lastname: Durnford
authors.forename: Jonathan A D
authors.initials: JA
authors.lastname: Neilson
authors.forename: B Franz
authors.initials: BF
authors.lastname: Lang
authors.forename: Gertraud
authors.initials: G
authors.lastname: Burger
authors.forename: Jürgen M
authors.initials: JM
authors.lastname: Steiner
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Löffelhardt
authors.forename: Jonathan E
authors.initials: JE
authors.lastname: Meuser
authors.forename: Matthew C
authors.initials: MC
authors.lastname: Posewitz
authors.forename: Steven
authors.initials: S
authors.lastname: Ball
authors.forename: Maria Cecilia
authors.initials: MC
authors.lastname: Arias
authors.forename: Bernard
authors.initials: B
authors.lastname: Henrissat
authors.forename: Pedro M
authors.initials: PM
authors.lastname: Coutinho
authors.forename: Stefan A
authors.initials: SA
authors.lastname: Rensing
authors.forename: Aikaterini
authors.initials: A
authors.lastname: Symeonidi
authors.forename: Harshavardhan
authors.initials: H
authors.lastname: Doddapaneni
authors.forename: Beverley R
authors.initials: BR
authors.lastname: Green
authors.forename: Veeran D
authors.initials: VD
authors.lastname: Rajah
authors.forename: Jeffrey
authors.initials: J
authors.lastname: Boore
authors.forename: Debashish
authors.initials: D
authors.lastname: Bhattacharya
mesh_terms: D005075:Biological Evolution; D000458:Cyanobacteria / Q000235:genetics; D044424:Cyanophora / Q000235:genetics*; D019143:Evolution, Molecular; D022761:Gene Transfer, Horizontal; D005798:Genes, Bacterial; D018745:Genome, Plant; D008969:Molecular Sequence Data; D010788:Photosynthesis / Q000235:genetics*; D010802:Phylogeny; D013559:Symbiosis