Physical Mapping of 5S rDNA in <i>Eucalyptus dunnii</i> Maiden and <i>Zea mays</i> L. by PRINS
نویسندگان
چکیده
منابع مشابه
Physical mapping of 18S-25S rDNA and 5S rDNA in Lupinus via fluorescent in situ hybridization.
Double-target fluorescent in situ hybridization (FISH) was used to determine the genomic distribution of ribosomal RNA genes in five Lupinus species: L. cosentinii (2n=32), L. pilosus (2n=42), L. angustifolius (2n=40), L. luteus (2n=52) and L. mutabilis (2n=48). 18S-25S rDNA and 5S rDNA were used as probes. Some interspecific variation was observed in the number and size of the 18S-25S rDNA loc...
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An accurate physical map of the location of the 5S and the 18S-5.8S-25S rRNA genes and a repetitive DNA sequence has been produced on Aegilops umbellulata Zhuk., (2n = 2x = 14) chromosomes by in situ hybridization. Chromosome morphology together with the hybridization pattern of pSc119.2, a DNA sequence from rye, allowed identification and discrimination of different chromosomes; pSc119.2 hybri...
متن کاملChromosomal diversity in Hypostomus (Siluriformes, Loricariidae) with emphasis on physical mapping of 18S and 5S rDNA sites.
We examined chromosomes of three species of the genus Hypostomus, in order to contribute to the understanding of the karyotype evolution of this group. Specimens of H. ancistroides and H. nigromaculatus displayed differences in karyotype formulas, distribution and location of heterochromatin and nucleolus organizer regions when compared to other populations of the same species. We made the...
متن کاملFISH-mapping of the 5S rDNA locus in chili peppers (Capsicum-Solanaceae).
We present here the physical mapping of the 5S rDNA locus in six wild and five cultivated taxa of Capsicum by means of a genus-specific FISH probe. In all taxa, a single 5S locus per haploid genome that persistently mapped onto the short arm of a unique metacentric chromosome pair at intercalar position, was found. 5S FISH signals of almost the same size and brightness intensity were observed i...
متن کاملPhysical mapping of rDNA loci in Brassica species.
The number of major rDNA loci (the genes coding for 18S-5.8S-26S rRNA) was investigated in the economically important Brassica species and their wild relatives by in situ hybridization of an rDNA probe to metaphase chromosomes and interphase nuclei. The diploid species B. nigra (B genome) has two major pairs of rDNA loci, B. oleracea (C genome) has two major pairs and one minor pair of loci, wh...
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ژورنال
عنوان ژورنال: CYTOLOGIA
سال: 2019
ISSN: 0011-4545,1348-7019
DOI: 10.1508/cytologia.84.77