[Nucleotide sequence and genomic organization of repeating units of the AT-rich family or repeats in the diploid wheat Triticum monococcum L].
In diploid wheat Triticum monococcum L., a novel family of AT-rich repeated DNA sequences arranged in clusters of tandem arrays of 560-bp fragments is described. The nucleotide sequence of a 556-bp repeat unit was determined. The basic structural unit of this repeated DNA family contains subrepeats with the main motif AAACATTGTTAC. This type of repetitive DNA sequence could evolve via tandem amplification of short subrepeats with some subsequent divergence, and/or via recombination with unique sequences. Structural organization of homologous sequences, revealed by blot hybridization in other representatives of the Triticeae tribe, suggest that this family of repeated DNA is genome-specific.
Nikonorov
Iu M
IuM
Department of Biochemistry and Cytochemistry, Ufa Research Center, Russian Academy of Sciences, Russia.
Chemeris
A V
AV
Vil'danov
I M
IM
Vakhitov
V A
VA
D000225:Adenine; D001483:Base Sequence; D018744:DNA, Plant; D004171:Diploidy; D008969:Molecular Sequence Data; D009693:Nucleic Acid Hybridization; D011995:Recombination, Genetic; D012091:Repetitive Sequences, Nucleic Acid; D012689:Sequence Homology, Nucleic Acid; D013941:Thymine; D014908:Triticum / Q000235:genetics*
D018744:DNA, Plant; D000225:Adenine; D013941:Thymine
Nukleotidnaia posledovatel'nost' i genomnaia organizatsiia povtoriaiushcheĭsia edinitsy AT-bogatogo semeĭstva povtorov diploidnoĭ pshenitsy Triticum monococcum L.