Nucleotide composition of the cold-sensitive heterochromatin regions of Paris hainanensis Merrill chromosomes |
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Authors: | Punina E O Rodionov A V Miakoshina Iu A Grif V G |
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Affiliation: | Komarov Botanical Institute, Russian Academy of Sciences, St. Petersburg, 197376 Russia. punina@EP2600.spb.edu |
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Abstract: | Cold-induced decondensation of heterochromatic regions (CSR-bands) in Paris hainanensis (= Daiswa hainanensis Merrill Takht.) (2n = 10; 10 + b) was studied. The comparison of CSR-banding patterns with those obtained by nucleotide-specific staining with fluorochromes DAPI and chromomycin A3 demonstrated that low temperatures induced decondensation only of large AT-rich heterochromatic regions. It is suggested that this is characteristic of all plant species. |
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