title: [Primary structure of the 5.8S gene of rRNA and internal transcribed spacers of rDNA in diploid wheat Triticum urartu thum. ex. gandil].
abstract: Nucleotide sequences of 5.8S rRNA gene and rDNA internal transcribed spacers ITS-1 and ITS-2 were determined in diploid wheat Triticum urartu. It was shown that 5.8S rRNA gene of this wheat species consists of 163 base pairs and GC-content is 59.5%. When comparing 5.8S rRNA sequences in diploid wheat, rice and lupine and also 5.8S rRNA in hexaploid wheat and horse beans a high evolutional conservatism of its structure was revealed. The size of ITS-1 and ITS-2 in Tr. urartu is 219 and 225 base pairs long correspondingly. While comparing structures of similar rDNA regions of Tr. urartu, rice and maize a high level of homology was found only between nucleotides adjoining genes of high molecular rRNAs. In ITS-1 of Tr. urartu an insertion of 5'-GACGACGACATTGTCCGTC-3' was found, which is absent in maize and rice.
authors.forename: A V
authors.initials: AV
authors.lastname: Chemeris
authors.forename: V A
authors.initials: VA
authors.lastname: Vakhitov
mesh_terms: D001483:Base Sequence; D004247:DNA / Q000235:genetics*; D004171:Diploidy; D008969:Molecular Sequence Data; D012335:RNA, Ribosomal / Q000235:genetics*; D012340:RNA, Ribosomal, 5.8S / Q000235:genetics*; D014158:Transcription, Genetic; D014908:Triticum / Q000235:genetics*
chemical_list: D012335:RNA, Ribosomal; D012340:RNA, Ribosomal, 5.8S; D004247:DNA
vernacular_title: Pervichnaia struktura gena 5.8S rRNA i bnutrennikh transkribiruemykh speĭserov rDNK u diploidnoĭ pshenitsy Triticum urartu thum. ex gandil.