Cytological investigation of Haplopappus gracilis (Nutt.) Gray: 5-methylcytosine-rich regions, fluorochrome banding and chromatin sensitivity to DNase I digestion.

Cytological investigation of Haplopappus gracilis (Nutt.) Gray: 5-methylcytosine-rich regions, fluorochrome banding and chromatin sensitivity to DNase I digestion. Research Abstract Details 

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Cytological investigation of Haplopappus gracilis (Nutt.) Gray: 5-methylcytosine-rich regions, fluorochrome banding and chromatin sensitivity to DNase I digestion. Abstract Text:

Haplopappus gracilis (Nutt.) Gray, one of the five known higher plants with a chromosome number of 2n = 4, was studied from a cytological point of view. The chromosome complement of this species was characterized by means of automated karyotype analysis. Moreover, the DNA methylation pattern and fluorochrome banding were determined and compared with cytological data present in the literature. DNA methylation distribution along metaphase chromosomes involved all chromosome territories evidenced by C-banding. Other methylated bands correlated positively with aceto-orcein-positive heterochromatic portions and/or with late replicating bands and/or fluorochrome bands. Some methylated bands showed differences between homologous chromosomes. These bands belonged partly to certain heterochromatic domains and partly to intercalary sites not defined by other standard banding techniques. Differences between the homologues were also indicated by our DNA content data obtained after DNase I digestion.

Cytological investigation of Haplopappus gracilis (Nutt.) Gray: 5-methylcytosine-rich regions, fluorochrome banding and chromatin sensitivity to DNase I digestion. Publishing Authors By Initials

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Cytological investigation of Haplopappus gracilis (Nutt.) Gray: 5-methylcytosine-rich regions, fluorochrome banding and chromatin sensitivity to DNase I digestion. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Protoplasma

VOLUME: 233

Page Numbers: 107-13

Journal Abbreviation: Protoplasma

ISSN: 0033-183X

DAY: 10

MONTH: 07

YEAR: 2008

Cytological investigation of Haplopappus gracilis (Nutt.) Gray: 5-methylcytosine-rich regions, fluorochrome banding and chromatin sensitivity to DNase I digestion. Information

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LANGUAGE: eng

NlmUniqueID: 9806853

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Grant and Affiliation Information for Cytological investigation of Haplopappus gracilis (Nutt.) Gray: 5-methylcytosine-rich regions, fluorochrome banding and chromatin sensitivity to DNase I digestion.

AFFILIATION: Dipartimento di Biologia, Università di Pisa, Pisa, mruffini@biologia.unipi.it.

Country: Austria

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MEDLINETA: Protoplasma

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