Gross chromosome rearrangements are occurring in an accession of the grass Lolium rigidum

Autor:	H M, Thomas, J A, Harper, W G, Morgan
Rok vydání:	2001
Předmět:	Gene Rearrangement Recombination Genetic DNA Plant Genotype Lolium DNA Ribosomal In Situ Hybridization Fluorescence
Zdroj:	Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology. 9(7)
ISSN:	0967-3849
Popis:	Chromosome structure was analysed at mitosis in root tip meristems of eight genotypes of Lolium rigidum. FISH revealed changed positions in the rDNA sites indicating extensive chromosome rearrangements; indeed no two genotypes were the same. In one genotype, there were differences between cells within individual root tips. The changed positions of the rDNA sites appear to be reflections of chromosome translocations and this was confirmed by the presence of quadrivalents at metaphase I of meiosis. Possible mechanisms are discussed for this exceptional level of chromosome instability.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=pmid________::50350724549bae88ba00d442b8a9ec81 https://pubmed.ncbi.nlm.nih.gov/11721955 Zobrazit plný text záznamu Full text from SpringerLink