ISSN:
1432-2242
Keywords:
Barley powdery mildew
;
Gene-for-gene hypothesis
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Summary The obligate parasitic fungus, Erysiphe graminis f. sp. hordei, was found to harbour plasmid-like extrachromosomal DNA. A 1.35-kb fragment of this 9kb plasmid was cloned into the pUC12 vector. No homology was detected to nuclear or mitochondrial DNA. As only about half of the 27 isolates examined contained plasmid-like DNA, this appears to be inessential for fungal survival. The plasmid is frequent in European isolates and is found in both newly collected isolates and in isolates kept under laboratory conditions for many years. No correlation between presence of plasmid and specific avirulence/virulence genes was found. The plasmid appear to be located in the mitochondria.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00223787
Permalink