title: Intraspecific length heterogeneity of the rDNA-IGR in Arabidopsis thaliana due to homologous recombination.
abstract: A new heterogeneity of the rDNA spacer of Arabidopsis thaliana, resulting from variation in copy number of the so-called 'C' repeat located downstream of the presumptive polymerase I promoter, is reported. Variation is shown to occur within and between ecotypes. PCR analysis and sequence comparison suggests that the observed length heterogeneity is due to homologous recombination.
authors.affiliation: Universität Wien, Abteilung Cytologie und Genetik, Vienna, Austria.
authors.forename: C
authors.initials: C
authors.lastname: Luschnig
authors.forename: A
authors.initials: A
authors.lastname: Bachmair
authors.forename: D
authors.initials: D
authors.lastname: Schweizer
mesh_terms: D017360:Arabidopsis / Q000235:genetics*; D001483:Base Sequence; D003001:Cloning, Molecular; D004275:DNA, Ribosomal / Q000235:genetics*; D008969:Molecular Sequence Data; D011110:Polymorphism, Genetic; D012335:RNA, Ribosomal / Q000235:genetics*; D012337:RNA, Ribosomal, 18S / Q000235:genetics*; D011995:Recombination, Genetic; D012091:Repetitive Sequences, Nucleic Acid; D012689:Sequence Homology, Nucleic Acid
chemical_list: D004275:DNA, Ribosomal; D012335:RNA, Ribosomal; D012337:RNA, Ribosomal, 18S; C065039:RNA, ribosomal, 25S