[Nucleotide composition of the cold-sensitive heterochromatin regions of Paris hainanensis Merrill chromosomes].
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.
Punina
E O
EO
Komarov Botanical Institute, Russian Academy of Sciences, St. Petersburg, 197376 Russia. punina@EP2600.spb.edu
Rodionov
A V
AV
Miakoshina
Iu A
IuA
Grif
V G
VG
D002871:Chromosome Banding; D003080:Cold Temperature; D018744:DNA, Plant / Q000235:genetics*; D006570:Heterochromatin / Q000235:genetics*; D019684:Magnoliopsida / Q000235:genetics*; D009711:Nucleotides / Q000235:genetics
D018744:DNA, Plant; D006570:Heterochromatin; D009711:Nucleotides