Summary
A method used to analyse Flor's M group of genes controlling specific resistance of flax to its rust is described. Using this method, three of seven genes reported so far have been brought together in pairs in coupling. The specific effects of each pair of genes in coupling is a simple sum of each individual gene and identical to the corresponding pair in repulsion, suggesting they are not functionally allelic. Segregational data show that four of these M genes represent closely linked sites separable by recombination and a possible linear order is suggested. Further analysis awaits the availability of appropriate strains of rust to discriminate M2, M5 and M6 individually and to further distinguish between M1 and M4.
Similar content being viewed by others
Article PDF
References
Cruickshank, I A M. 1956. A further note on the physiologic specialisation in Melampsora lini (Enrenb.) Lév. in New Zealand. New Zealand J Sci Tech B, 38, 85–88.
Flor, H H. 1935. Physiologic specialisation of Melampsora lini on Linum usitatissimum. USDA J Agric Res, 51, 819–837.
Flor, H H. 1955. Host-parasite interaction in flax rust—its genetics and other implications. Phytopath, 45, 680–685.
Flor, H H. 1956. The complementary genie systems in flax and flax rust. Adv Genet, 8, 29–54.
Flor, H H. 1965. Tests for allelism of rust-resistance genes in flax. Crop Sci, 5, 415–418.
Flor, H H. 1967. Preservation of urediospores of Melampsora lini. Phytopath, 57, 320–321.
Flor, H H, and Comstock, V E. 1972. Identification of rust conditioning genes in flax cultures. Crop Sci, 12, 800–804.
Hooker, A L, and Saxena, K M S. 1971. Genetics of disease resistance in plants. Ann Rev of Genetics, 5, 407–424.
Kerr, H B. 1951. The use of excised shoots in linseed investigations. Proc Linnean Soc of NSW, lxxvi, 183–187.
Kerr, H B. 1960. The inheritance of resistance of Linum usitatissimum L. to the Australian Melampsora lini (Pers.) Lév. race complex. Proc Linnean Soc of NSW, lxxxv, 273–321.
Lawrence, G J. 1977. Genetics of pathogenicity in flax rust. Ph.D. Thesis, The University of Adelaide.
Lawrence, G J, Mayo, G M E, and Shepherd, K W. 1979. Interactions between genes controlling pathogenicity. Phytopath. (in press).
Mather, K. 1951. The Measurement of Linkage in Heredity, 2nd Edition Rev. and Enlarged. 149 pp. Methuen and Co. Ltd., London.
Moseman, J G. 1971. Genes for specific resistance: powdery mildew of barley. Phytopath, 61, 617–626.
Person, C O. 1959. Gene-for-gene relationships in host-parasite systems. Canad J Bot, 37, 1101–1130.
Saxena, K M, and Hooker, A L. 1968. On the structure of a gene for disease resistance in Maize. PNAS, 61, 1300–1305.
Shepherd, K W. 1963. Genetics of host-pathogen interactions. Ph.D. Thesis, The University of Adelaide.
Shepherd, K W, and Mayo, G M E. 1972. Genes conferring specific plant disease resistance. Science, 175, 375–380.
Shepherd, K W, and Mayo, G M E. 1979. Studies of genes controlling specific host-parasite interactions in flax and its rust. II. Fine structure analysis of the L group in the host (in prep.).
Stevens, W L. 1942. Accuracy of mutation rates. J Genetics, 43, 301–307.
Wicks, Z W III, and Hammond, J J. 1978. Screening of flax species for new sources of genes resistant to Melampsora lini (Ehrenb.) Lév. Crop Sci, 18, 7–10.
Zimmer, D E, and Comstock, V E. 1973. New genes for rust resistance in flax. Phytopath, 63, 777–780.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Mayo, G., Shepherd, K. Studies of genes controlling specific host-parasite interactions in flax and its rust. Heredity 44, 211–227 (1980). https://doi.org/10.1038/hdy.1980.18
Received:
Issue date:
DOI: https://doi.org/10.1038/hdy.1980.18
This article is cited by
-
Construction of ‘compound’ rust resistance genes in maize
Euphytica (1996)
-
Segregation analysis and RFLP mapping of the R1 and R3 alleles conferring race-specific resistance to Phytophthora infestans in progeny of dihaploid potato parents
Molecular and General Genetics MGG (1994)
-
TheR1 gene conferring race-specific resistance toPhytophthora infestans in potato is located on potato chromosome V
Molecular and General Genetics MGG (1992)
-
Developing a transposon tagging system to isolate rust-resistance genes from flax
Theoretical and Applied Genetics (1992)
-
Present status of genetics of rust resistance in flax
Euphytica (1991)
