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Transmission of Mitochondrial DNA in Ustilago Violacea

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Journal Curr Genet
Specialty Genetics
Date 1992 Aug 1
PMID 1358468
Citations 14
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Abstract

Mitochondrial DNA (mtDNA) restriction fragment length polymorphisms (RFLPs) were used as genetic markers for following mitochondrial transmission in the basidiomycete Ustilago violacea. Yeast-like cells of opposite mating types (a1 and a2) were mated on 2% water agar and were treated with alpha-tocopherol to induce formation of dikaryotic hyphae. Upon depletion of the alpha-tocopherol, the hyphae budded off haploid cells with parental nuclear genotypes. These cells were examined for mitochondrial RFLP phenotype. In progeny expressing the a1 mating type, mitochondria from either parent were observed equally frequently. In progeny with the a2 mating type, mitochondria were almost exclusively (94%) from the a2 parent.

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