Non-mendelian inheritance of mitochondrial DNA and ribosomal DNA in the myxomycete, Didymium iridis.
Mol Gen Genet
; 213(2-3): 370-8, 1988 Aug.
Article
en En
| MEDLINE
| ID: mdl-3185507
The inheritance of both the mitochondrial DNA (mtDNA) and the nuclear-encoded extrachromosomal ribosomal DNA (rDNA) has been studied in the myxomycete, Didymium iridis, by DNA-DNA hybridization of labeled probes to total DNA at various stages of the life cycle. Both the mtDNA and rDNA populations rapidly become homogeneous in individuals, but there is a qualitative difference in the patterns of inheritance of these two molecules. One parental rDNA type was preferentially inherited in all crosses; selective replication of this molecule is tentatively proposed as the mechanism of inheritance. In contrast, either parental mtDNA type could be inherited. Since the inherited population of parental mtDNA molecules are not partitioned into cells in this coenocytic organism, no known mechanism of inheritance can explain the rapid and apparently random loss of one parental mtDNA type in individuals.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Mixomicetos
/
ADN de Hongos
/
Herencia Extracromosómica
Tipo de estudio:
Qualitative_research
Idioma:
En
Revista:
Mol Gen Genet
Año:
1988
Tipo del documento:
Article
Pais de publicación:
Alemania