title: Differential organellar inheritance in Passiflora's (Passifloraceae) subgenera.
abstract: Four chloroplast (cp), one mitochondrial (mt), and one ribosomal nuclear (ITS) DNA regions were studied in four artificial and one natural interspecific Passiflora hybrids. The ITS results confirmed their hybrid origin and all mtDNAs were maternally inherited. The same, however, was not true for cpDNA. The four hybrids (three artificial and one natural) derived from species of the Passiflora subgenus showed a cpDNA paternal inheritance, while the one involving taxa of the Decaloba subgenus gave evidence of maternal transmission. These results are of significance for the ongoing studies which are being performed on the molecular evolution of this genus and furnish important background for investigations aimed at clarifying the factors which determine cpDNA inheritance.
authors.affiliation: Programa de Pós-Graduação em Genética e Biologia Molecular, Departamento de Genética, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Caixa, Postal 15053, 91501-970 Porto Alegre, RS, Brazil.
authors.forename: Valéria C
authors.initials: VC
authors.lastname: Muschner
authors.forename: Aline P
authors.initials: AP
authors.lastname: Lorenz-Lemke
authors.forename: Maurizio
authors.initials: M
authors.lastname: Vecchia
authors.forename: Sandro L
authors.initials: SL
authors.lastname: Bonatto
authors.forename: Francisco M
authors.initials: FM
authors.lastname: Salzano
authors.forename: Loreta B
authors.initials: LB
authors.lastname: Freitas
mesh_terms: D001483:Base Sequence; D003433:Crosses, Genetic; D018742:DNA, Chloroplast / Q000235:genetics; D004272:DNA, Mitochondrial / Q000235:genetics; D018744:DNA, Plant / Q000235:genetics*; D021903:DNA, Ribosomal Spacer / Q000235:genetics; D019143:Evolution, Molecular; D008969:Molecular Sequence Data; D015388:Organelles / Q000235:genetics; D029598:Passiflora / Q000145:classification / Q000235:genetics*; D012689:Sequence Homology, Nucleic Acid
chemical_list: D018742:DNA, Chloroplast; D004272:DNA, Mitochondrial; D018744:DNA, Plant; D021903:DNA, Ribosomal Spacer