Document Detail

Characterization and distribution of an interspersed repeated nucleotide sequence from Lophopyrum elongatum and mapping of a segregation-distortion factor with it.
MedLine Citation:
PMID:  2086355     Owner:  NLM     Status:  MEDLINE    
Repeated nucleotide sequence pLeUCD2 cloned from Lophopyrum elongatum is highly abundant in the genomes of diploid and polyploid wheatgrass species of genera Lophopyrum, Thinopyrum, Pseudoroegneria, Agropyron, Elymus, Elytrigia, and Pascopyrum but undetectable by Southern blot hybridization in Triticum and representative species of Dasypyrum, Hordeum, Psathyrostachys, Secale, Taeniatherum, Heteranthelium, and Leymus in the tribe Triticeae. The DNA fragment inserted in pLeUCD2 is 277 bp long and AT rich (65%), and contains numerous inverted and palindromic repeats. In situ DNA hybridization substantiated a previous hypothesis that the sequence is interspersed in the wheatgrass genomes. Heterogeneity and clustering of like repeats of the pLeUCD2 family along wheatgrass chromosomes was used to map a segregation-distortion factor, designated Sd-1, proximal to the Lr19 locus in recombinant chromosomes of L. ponticum chromosome 7Ag and wheat chromosome 7D.
H B Zhang; J Dvorák
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Genome / National Research Council Canada = Génome / Conseil national de recherches Canada     Volume:  33     ISSN:  0831-2796     ISO Abbreviation:  Genome     Publication Date:  1990 Dec 
Date Detail:
Created Date:  1991-05-22     Completed Date:  1991-05-22     Revised Date:  2000-12-18    
Medline Journal Info:
Nlm Unique ID:  8704544     Medline TA:  Genome     Country:  CANADA    
Other Details:
Languages:  eng     Pagination:  927-36     Citation Subset:  IM    
Department of Agronomy and Range Science, University of California, Davis 95616.
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MeSH Terms
Base Sequence
Chromosome Mapping*
Molecular Sequence Data
Nucleic Acid Hybridization
Plants / genetics*
Recombination, Genetic
Repetitive Sequences, Nucleic Acid*

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

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