title: Molecular data from the chloroplast rpoC1 gene suggest a deep and distinct dichotomy of contemporary spermatophytes into two monophyla: gymnosperms (including Gnetales) and angiosperms.
abstract: Partial sequences of the rpoC1 gene from two species of angiosperms and three species of gymnosperms (8330 base pairs) were determined and compared. The data obtained support the hypothesis that angiosperms and gymnosperms are monophyletic and none of the recent groups of the latter is sister to angiosperms.
authors.affiliation: A.N. Belozersky Institute of Physicochemical Biology, Moscow State University, Moscow 119899, Russia. samigul@genebeee.msu.su
authors.forename: T K
authors.initials: TK
authors.lastname: Samigullin
authors.forename: W F
authors.initials: WF
authors.lastname: Martin
authors.forename: A V
authors.initials: AV
authors.lastname: Troitsky
authors.forename: A S
authors.initials: AS
authors.lastname: Antonov
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D002736:Chloroplasts / Q000235:genetics* / Q000378:metabolism; D032462:Cycadopsida / Q000145:classification* / Q000235:genetics*; D012321:DNA-Directed RNA Polymerases / Q000737:chemistry / Q000235:genetics*; D019143:Evolution, Molecular; D017343:Genes, Plant; D019684:Magnoliopsida / Q000145:classification* / Q000235:genetics*; D008969:Molecular Sequence Data; D010802:Phylogeny; D016415:Sequence Alignment; D017386:Sequence Homology, Amino Acid; D012689:Sequence Homology, Nucleic Acid
chemical_list: C108570:beta' subunit of RNA polymerase; D012321:DNA-Directed RNA Polymerases