Document Detail

Electrophoretic karyotypes of the elm tree pathogen Ophiostoma ulmi (sensu lato).
MedLine Citation:
PMID:  8479439     Owner:  NLM     Status:  MEDLINE    
Pulsed field gel electrophoresis using OFAGE, TAFE, and CHEF systems has been used to more fully characterize karyotypic variation within the two closely related fungal species of Ophiostoma ulmi sensu lato. Twelve wild-type and laboratory strains, representing the less aggressive species O. ulmi and both of the biotypes of the more aggressive species O. novo-ulmi were studied and their karyotypes determined. Depending on the strain, a minimum of four to a minimum of eight chromosomal DNA bands were present that fall into three distinct size classes, with one exception. Strain CESS16K (O. novo-ulmi, North American aggressive subgroup) contains a unique chromosomal DNA band which comigrated near a Saccharomyces cerevisiae chromosome of 0.95 Mb. This unique band was the smallest O. ulmi s. l. chromosomal DNA observed. Seven of the twelve strains shared a common chromosomal DNA banding pattern, whereas each of the other five had a unique karyotype. There was no correlation between chromosome profile and species, as some O. novo-ulmi and O. ulmi strains shared common electrophoretic karyotypes.
K Dewar; L Bernier
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Molecular & general genetics : MGG     Volume:  238     ISSN:  0026-8925     ISO Abbreviation:  Mol. Gen. Genet.     Publication Date:  1993 Apr 
Date Detail:
Created Date:  1993-05-26     Completed Date:  1993-05-26     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0125036     Medline TA:  Mol Gen Genet     Country:  GERMANY    
Other Details:
Languages:  eng     Pagination:  43-8     Citation Subset:  IM    
Centre de Recherche en Biologie Forestière, Faculté de Foresterie et de Géomatique, Université Laval, Ste-Foy, Québec, Canada.
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MeSH Terms
Chromosomes, Fungal
DNA, Fungal / genetics,  isolation & purification
Electrophoresis, Agar Gel / methods
Molecular Weight
Plants / microbiology
Polymorphism, Genetic
Xylariales / genetics*,  pathogenicity
Reg. No./Substance:
0/DNA, Fungal

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