Abstract
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
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Selected References
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- Ausubel F. M., Katagiri F., Mindrinos M., Glazebrook J. Use of Arabidopsis thaliana defense-related mutants to dissect the plant response to pathogens. Proc Natl Acad Sci U S A. 1995 May 9;92(10):4189–4196. doi: 10.1073/pnas.92.10.4189. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Bent A. F., Kunkel B. N., Dahlbeck D., Brown K. L., Schmidt R., Giraudat J., Leung J., Staskawicz B. J. RPS2 of Arabidopsis thaliana: a leucine-rich repeat class of plant disease resistance genes. Science. 1994 Sep 23;265(5180):1856–1860. doi: 10.1126/science.8091210. [DOI] [PubMed] [Google Scholar]
- Dickinson M. J., Jones D. A., Jones J. D. Close linkage between the Cf-2/Cf-5 and Mi resistance loci in tomato. Mol Plant Microbe Interact. 1993 May-Jun;6(3):341–347. doi: 10.1094/mpmi-6-341. [DOI] [PubMed] [Google Scholar]
- Dinesh-Kumar S. P., Whitham S., Choi D., Hehl R., Corr C., Baker B. Transposon tagging of tobacco mosaic virus resistance gene N: its possible role in the TMV-N-mediated signal transduction pathway. Proc Natl Acad Sci U S A. 1995 May 9;92(10):4175–4180. doi: 10.1073/pnas.92.10.4175. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Lawrence G., Finnegan J., Ellis J. Instability of the L6 gene for rust resistance in flax is correlated with the presence of a linked Ac element. Plant J. 1993 Oct;4(4):659–669. doi: 10.1046/j.1365-313x.1993.04040659.x. [DOI] [PubMed] [Google Scholar]
- Sudupak M. A., Bennetzen J. L., Hulbert S. H. Unequal exchange and meiotic instability of disease-resistance genes in the Rp1 region of maize. Genetics. 1993 Jan;133(1):119–125. doi: 10.1093/genetics/133.1.119. [DOI] [PMC free article] [PubMed] [Google Scholar]