אסיף מאגר המחקר החקלאי

Genetic duplication in Fusarium oxysporum

Year:

1995

Source of publication :

Authors :

Volume :

28

Co-Authors:

Kistler, H.C., Program in Plant Molecular and Cellular Biology, Plant Pathology Department, University of Florida, Gainesville, 32611-0680, FL, United States
Benny, U., Program in Plant Molecular and Cellular Biology, Plant Pathology Department, University of Florida, Gainesville, 32611-0680, FL, United States
Boehm, E.W.A., Volcani Center, Agricultural Research Organization, PO Box 6, Bet Dagan, 50250, Israel
Katan, T., Volcani Center, Agricultural Research Organization, PO Box 6, Bet Dagan, 50250, Israel

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Abstract:

Genomic clones hybridizing to anonymous, single-copy sequences were used to probe chromosomesized DNAs of Fusarium oxysporum f. sp. cubense separated by pulsed-field gel electrophoresis. As expected, most clones hybridized to single chromosome bands. However, two of eight "single-copy" clones hybridized to two chromosomes in some, but not all, of 14 isolates examined. This observation suggests a degree of genetic duplication in the fungus and is consistent with recent electrophoretic karyotype analysis indicating that intraspecific differences in genome size and chromosome number may be explained, at least in part, by persistent genetic duplication. © 1995 Springer-Verlag.

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