PMID: 7371452Jan 1, 1980Paper

Chromosome banding in amphibia. IV. Differentiation of GC- and AT-rich chromosome regions in Anura

Chromosoma
M Schmid

Abstract

The chromosomes of 26 species of Anura from variously highly envolved groups were analysed with the fluorescent GC-specific antibiotics mithramycin and chromomycin A3 as well as with the AT-specific quinacrine. The mithramycin- and chromomycin A3-stainings generally resulted in a pattern of the constitutive heterochromatin opposite to the one obtained with quinacrine stain. The weaker a heterochromatic region fluoresces with quinacrine, the stronger is the intensity of the fluorescence achieved with mithramycin and chromomycin A3. Some of the telomeric and interstitial heterochromatic regions, however, exhibit no enhanced fluorescence with any of the fluorochromes. The nucleolar constrictions of the nucleolus organizer regions (NORs) displayed the brightest mithramycin- and chromomycin A3-fluorescence in the karyotypes and interphase nuclei of all species examined. The contrast of the brightly fluorescing GC-rich heterochromatin and of the NORs is considerably enhanced, when the non-fluorescent AT-specific oligopeptide distamycin A is employed as a counterstain. No banding patterns were observed with the fluorochromes in the euchromatic regions of the metaphase chromosomes; this attributed to the strong spiralization of the anu...Continue Reading

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Citations

Jan 1, 1988·Chromosoma·M Schmid, C G de Almeida
Nov 1, 1995·Chromosome Research : an International Journal on the Molecular, Supramolecular and Evolutionary Aspects of Chromosome Biology·C A MestrinerP M Galetti Júnior
Jul 1, 1994·Chromosome Research : an International Journal on the Molecular, Supramolecular and Evolutionary Aspects of Chromosome Biology·A M Tan
Sep 1, 1994·Chromosome Research : an International Journal on the Molecular, Supramolecular and Evolutionary Aspects of Chromosome Biology·M J Smolen, J W Bickham
Mar 15, 1981·Experientia·M Schmid, K Bachmann
Jun 1, 1989·Journal of Molecular Evolution·G P Holmquist
Nov 26, 2009·Chromosome Research : an International Journal on the Molecular, Supramolecular and Evolutionary Aspects of Chromosome Biology·John AbramyanPeter Koopman
Feb 28, 2006·Genetica·G D C Severi-AguiarM T V Azeredo-Oliveira
Aug 10, 2006·Genetica·Rafael Bueno NoletoMarta Margarete Cestari
Jul 1, 1983·Developmental Biology·C H Thiébaud
Dec 1, 1995·Genome Génome / Conseil National De Recherches Canada·K HiraiH Morikawa
May 1, 1996·Biotechnic & Histochemistry : Official Publication of the Biological Stain Commission·P RabR B Phillips
Jan 1, 1991·Biotechnic & Histochemistry : Official Publication of the Biological Stain Commission·J L Bella, J Gosálvez
Dec 20, 2015·Zebrafish·Isabel Araújo OliveiraPaulo Roberto Antunes de Mello Affonso
Feb 11, 2005·Hereditas·Karine Frehner KavalcoOrlando Moreira-Filho
Aug 20, 2002·Hereditas·Marla Piumbini RochaLucio Antonio De Oliveira Campos
Mar 23, 2004·Hereditas·Fernando AnaniasShirlei M Recco-Pimentel
Feb 11, 2005·Hereditas·Carlos Alexandre Fernandes, Isabel Cristina Martins-Santos
Jul 4, 2015·Comparative Cytogenetics·Lídia NogueiraIracilda Sampaio
Apr 22, 2015·Comparative Cytogenetics·Carlos Alexandre FernandesIsabel Cristina Martins-Santos
Jan 18, 2015·The Journal of Heredity·Josivanda S AlmeidaPaulo Roberto A M Affonso
Apr 28, 2009·Micron : the International Research and Review Journal for Microscopy·Roberto Laridondo LuiOrlando Moreira Filho
Jan 5, 2014·Genetics and Molecular Biology·Sérgio SiqueiraShirlei Maria Recco-Pimentel
Aug 24, 2013·Anais Da Academia Brasileira De Ciências·Anderson FernandesDenilce M Lopes
May 20, 2006·Brazilian Journal of Biology = Revista Brasleira De Biologia·G G Born, L A C Bertollo

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