De-novo generation of mitochondrial DNA plasmids following cytoplasmic transmission of a degenerative disease in Ophiostoma novo-ulmi

A mitochondrial DNA plasmid was detected in an isolate of Ophiostoma novo-ulmi with a degenerative disease. The DNA plasmid was shown to be derived from the mitochondrial DNA and to map to a region corresponding to the large ribosomal RNA coding region. The DNA plasmid was not transmitted into sexua...

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Bibliographic Details
Published in:Current genetics 1993-12, Vol.24 (6), p.505-514
Main Authors: Charter, N.W. (Imperial Coll. of Science, London (United Kingdom). Dept. of Biology. Technology and Medicine), Buck, K.W, Brasier, C.M
Format: Article
Language:English
Subjects:
ADN
Biological and medical sciences
Blotting, Southern
CITOPLASMA
Classical genetics, quantitative genetics, hybrids
Cloning, Molecular
Crosses, Genetic
CYTOPLASME
De-novo generation of mitochondrial DNA plasmids
Degenerative disease
DNA, Fungal - biosynthesis
DNA, Fungal - isolation & purification
DNA, Mitochondrial - biosynthesis
DNA, Mitochondrial - isolation & purification
Electrophoresis, Agar Gel
Fundamental and applied biological sciences. Psychology
GENETICA MITOCHONDRIAL
Genetics of eukaryotes. Biological and molecular evolution
GENETIQUE MITOCHONDRIALE
Molecular Weight
OPHIOSTOMA
Ophiostoma novo-ulmi
Plant Diseases - microbiology
PLASMIDE
PLASMIDIOS
Plasmids
Thallophyta, bryophyta
Trees - microbiology
Vegetals
Xylariales - genetics
Xylariales - isolation & purification
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Summary:A mitochondrial DNA plasmid was detected in an isolate of Ophiostoma novo-ulmi with a degenerative disease. The DNA plasmid was shown to be derived from the mitochondrial DNA and to map to a region corresponding to the large ribosomal RNA coding region. The DNA plasmid was not transmitted into sexual (ascospore) progeny, irrespective of whether the diseased isolate acted as the female or male parent. Transmission of the disease to healthy, plasmid-free, "recipient" isolates by hyphal anastomosis was not accompanied by transfer of mitochondrial DNA or DNA plasmid from the diseased "donor" isolate, but resulted in de-novo generation of different plasmids, derived from the recipient's mitochondrial DNA.
ISSN:0172-8083
1432-0983
DOI:10.1007/BF00351714