Contrasting complexity of two rust resistance loci in flax.
DNA probes from the L6 rust resistance gene of flax (Linum usitatissimum) hybridize to resistance genes at the unlinked M locus, indicating sequence similarities between genes at the two loci. Genetic and molecular data indicate that the L locus is simple and contains a single gene with 13 alleles and that the M locus is complex and contains a tandem array of genes of similar sequence. Thus the evolution of these two related loci has been different. The consequence of the contrasting structures of the L and M loci on the evolution of different rust resistance specificities can now be investigated at the molecular level
Ellis
J G
JG
Commonwealth Scientific and Industrial Research Organization, Division of Plant Industry, Canberra, Australia.
Lawrence
G J
GJ
Finnegan
E J
EJ
Anderson
P A
PA