ArticleMolecular biology reports2020
Identification of ribosomal sites and karyotype analysis in Festuca ulochaeta Steud. and Festuca fimbriata Ness., grasses native to Brazil.
Article in Molecular biology reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Identification of 5S and 45S rDNA sites in Chrysanthemum species by using oligonucleotide fluorescence in situ hybridization (Oligo-FISH).Molecular biology reports · 2021Article
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6 authors.
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Abstract
Festuca L. has more than 600 perennial species described, which makes it the largest genus within the family Poaceae. In Brazil, only two native species of Festuca have been described, for which cytogenetic studies need to be strengthened: Festuca ulochaeta and Festuca fimbriata. The aim of this study was to characterize the karyotypes of F. ulochaeta and F. fimbriata based on the mapping of rDNA sites. The FISH was performed with 35S and 5S rDNA probes. Both species have 42 chromosomes, of which 36 were metacentric and six were submetacentric. Festuca fimbriata has two pairs of 35S rDNA sites, one located on the metacentric pair 4, in an interstitial position, and one at the submetacentric pair 14 in the proximal position. Festuca ulochaeta has one pair of 35S rDNA in interstitial-proximal position in the metacentric pair 3. Both species showed 5S rDNA sites only on chromosome pair 21 in the terminal position of the short arm. The analysis of the chromosomal characteristics indicates that these species have a symmetrical karyotype and allopolyploid origin.
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