title: Plastid evolution: remnant algal genes in ciliates.
abstract: Determination of the number of times that plastids have been gained and lost during eukaryotic evolution has proven difficult. A recent study has uncovered what could be the molecular signature of a photosynthetic ancestry for an important plastid-lacking lineage of microbial eukaryotes--the ciliates.
authors.affiliation: The Canadian Institute for Advanced Research, Program in Integrated Microbial Biodiversity, Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, Nova Scotia B3H 1X5, Canada. jmarchib@dal.ca
authors.forename: John M
authors.initials: JM
authors.lastname: Archibald
mesh_terms: D020418:Algal Proteins / Q000235:genetics*; D000818:Animals; D056890:Eukaryota / Q000235:genetics*; D022761:Gene Transfer, Horizontal; D023281:Genomics; D010788:Photosynthesis; D010802:Phylogeny; D018087:Plastids / Q000235:genetics*; D013559:Symbiosis; D013768:Tetrahymena / Q000166:cytology / Q000235:genetics*
chemical_list: D020418:Algal Proteins