Document Detail


Polymorphism of heterochromatic regions of flax chromosomes.
MedLine Citation:
PMID:  11817570     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The C-banding technique was used to study flax chromosomes (Linum usitatissimum L., 2n = 30). Heterochromatin was located mainly in pericentromeric regions of chromosomes. In spite of small size (1.5-3.5 microm), all 15 pairs of homologous chromosomes were identified on the basis of the C-banding pattern and morphology. An idiogram of C-banded chromosomes of L usitatissimum L. is presented. Polymorphism of chromosomal heterochromatic regions was studied in karyotypes of three flax samples: L usitatissimum L., accession K-603 (L usitatissimum var. usitatissimum), and accession K-594 (L. usitatissimum var. humile (Mill.)). A common C-banding pattern was observed in all forms studied, although there were some distinctions in the individual band size. The fibre flax (accession K-603) karyotype had the C-banding pattern similar to that of L usitatissimum L., but some intercalary and telomeric C-bands were somewhat larger, and a satellite (NOR) was observed in the short arm of chromosome I. In crown flax, (K-594) chromosomal C-banding pattern exhibited smaller pericentromeric and larger intercalary bands; telomeric bands were present on almost all chromosomes. Thus, the intraspecies polymorphism revealed in the chromosomal C-banding pattern makes possible the use of C-bands as chromosome markers in the studies of genetic and genomic polymorphism of this species.
Authors:
V Muravenko; T E Samatadze; K V Popov; A V Amosova; A V Zelenin
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Membrane & cell biology     Volume:  14     ISSN:  1023-6597     ISO Abbreviation:  Membr Cell Biol     Publication Date:  2001  
Date Detail:
Created Date:  2002-01-30     Completed Date:  2002-06-05     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9517472     Medline TA:  Membr Cell Biol     Country:  Switzerland    
Other Details:
Languages:  eng     Pagination:  743-8     Citation Subset:  IM    
Affiliation:
Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow. chrom@genome.eimb.relarn.ru
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MeSH Terms
Descriptor/Qualifier:
Chromosome Banding
Chromosomes
Flax / genetics*
Heterochromatin / genetics*
Polymorphism, Genetic*
Chemical
Reg. No./Substance:
0/Heterochromatin

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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