Homologous linear plasmids in mitochondria of three species of wheat bunt fungi, Tilletia caries, T. laevis and T. controversa

descriptionPublicationkeyboard_double_arrow_right Article 01 Mar 1990 English Publisher:Springer Science and Business Media LLCJournal:Current Genetics, volume 17, pages 229-233 (issn: 0172-8083, eissn: 1432-0983,

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Authors: W. K. Kim; E. Whitmore; G. R. Klassen;

doi: 10.1007/bf00312614

Homologous linear plasmids in mitochondria of three species of wheat bunt fungi, Tilletia caries, T. laevis and T. controversa

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Abstract

All isolates of Tilletia spp. investigated (five isolates of T. caries, including one from Japan, two isolates of T. laevis, and five isolates of T. controversa) contained a linear DNA plasmid ranging in size from 7.2 to 7.6 kb. All plasmids were highly homologous to each other as shown by DNA-DNA hybridization and comparison of restriction enzyme sites. Variability in the size of the plasmid was found to be due to differences within a central region of the plasmid. No homology between the plasmid and mitochondrial or nuclear DNA was found, but the mitochondrial origin of the plasmid was confirmed.

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