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Discovery, characterization and exploitation of Mlo powdery mildew resistance in barley

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Breeding for Disease Resistance

Part of the book series: Developments in Plant Pathology ((DIPP,volume 1))

Summary

Mlo resistance to barley powdery mildew is a relatively new kind of resistance. It was originally described in a powdery mildew resistant barley mutant in 1942 and has been mutagen-induced repeatedly since then. About 1970 it was also recognized in barley landraces collected in Ethiopia in the 1930s. It is unique in that 1) Mlo resistance does not conform to the gene-for-gene system; 2) mlo genes originating from different mutational events map as non-complementing recessive alleles in one locus; 3) all alleles confer the same phenotype, though with small quantitative differences; 4) it is effective against all isolates of the pathogen; and 5) the resistance is caused by rapid formation of large cell wall appositions at the encounter sites preventing penetration by the fungus. Powdery mildew isolates with elevated Mlo aggressiveness have been produced on barley in the laboratory, but have not been found in nature. Mlo resistance is considered very durable. The exploitation of Mlo resistance has been hampered by pleiotropic effects of the mlo genes, viz. necrotic leaf spotting and reduced grain yield, but they have been overcome by recent breeding work. During the 1980s Mlo-resistant spring barley varieties have become cultivated extensively in several European countries, in 1990 on about 700,000 ha.

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References

  • Aist, J.R. and R.E. Gold, 1987. Prevention of fungal ingress: The role of papillae and calcium. Japan Sci. Soc. Press, Tokyo/ Springer-Verlag, Berlin, pp. 47–58.

    Google Scholar 

  • Aist, J.R., R.E. Gold, C.J. Bayles, G.H. Morrison, S. Chandra and H.W. Israel, 1988. Evidence that molecular components of papillae may be involved in Ml-o resistance to barley powdery mildew. Physiol. Mol. Plant Pathol. 33: 17–32.

    Article  CAS  Google Scholar 

  • Andersen, L., 1991. Mlo aggressiveness in European barley powdery mildew. In: J. Helms Jorgensen (Ed.), Integrated Control of Cereal Mildews: Virulence Patterns and Their Change. Riso National Laboratory, Roskilde, pp. 187–196.

    Google Scholar 

  • Andersen, L. and J.H. Jorgensen, 1992. Mlo aggressiveness of barley powdery mildew. Norwegian J. Agric. Sci. Suppl. No. 7: 77–87.

    Google Scholar 

  • Bayles, C.J. and J.R. Aist, 1987. Apparent calcium mediation of resistance of an ml-o barley mutant to powdery mildew. Physiol. Mol. Plant Pathol. 30: 337–345.

    Article  CAS  Google Scholar 

  • Bayles, C.J., M.S. Ghemawat and J.R. Aist, 1990. Inhibition by 2-deoxy-D-glucose of callose formation, papilla deposition, and resistance to powdery mildew in an ml-o barley mutant. Physiol. Mol. Plant Pathol. 36: 63–72.

    Article  CAS  Google Scholar 

  • Bjornstad, A. and K. Aastveit, 1990. Pleiotropic effects on the ml-o mildew resistance gene in barley in different genetical backgrounds. Euphytica 46: 217–226.

    Article  Google Scholar 

  • Czembor, H.J. and E. Gacek, 1991. Development of high-yielding and disease-resistant barley cultivars through combination of mutagenesis with conventional cross-breeding. Cereal Res. Comm. 19: 43–49.

    Google Scholar 

  • Fischbeck, G., 1992. Barley cultivar development in Europe–success in the past and possible changes in the future. In: L. Munck (Ed.), Barley Genetics VI, vol. 2, Munksgärd Intern Publ., Copenhagen, pp. 885–901.

    Google Scholar 

  • Gabler, J. and H. Fritsche, 1991. Ergebnisse der Virulenzanalyse 1987–1990 bei Gerstenmehltau auf dem Teritorium der östlichen Bundesländer. Vortr. Pflanzenzüchtg. 19: 317–318.

    Google Scholar 

  • Giessen, J.E., W. Hoffmann and R. Schottenloher, 1956. Die Gersten Äthiopiens and Erythräas. Z. Pflanzenzüchtg. 35: 377–440.

    Google Scholar 

  • Hänsel, H., 1971. Experience with a mildew-resistant mutant (mut. 3502) of `Volkorn’ barley induced in 1952. In: Mutation Breeding for Disease Resistance, IAEA-PL-412/13, pp. 125129.

    Google Scholar 

  • Hentrich, W., 1979. Multiple Allelie, Pleiotropie and züchterische Nutzung mehltauresistenter Mutanten des mlo-Locus der Gerste. Tag-Ber., Akad. Landwirtsch.-Wiss., DDR, Berlin 175: 191–202.

    Google Scholar 

  • Hentrich, W. and A. Habekuss, 1991. Untersuchungen an heteroallelen mehltauresistenten Mutanten des mlo-Locus der Sommergerste. Vortr. Pflanzenzüchtg. 19: 311–312.

    Google Scholar 

  • Hinze, K., R.D. Thompson, E. Ritter, F. Salamini and P. Schulze-Lefert, 1991. RFLP-mediated targeting of the ml-o resistance locus in barley (Hordeum vulgare). Proc. Nat. Acad. Sci. USA 88: 3691–3695.

    Article  PubMed  CAS  Google Scholar 

  • Hoffmann, W. and I. Nover, 1959. Ausgangsmaterial für die Züchtung mehltauresistenter Gersten. Z. Pflanzenzüchtg. 42: 68–78.

    Google Scholar 

  • Jorgensen, J.H., 1971. Comparison of induced mutant genes with spontaneous genes in barley conditioning resistance to powdery mildew. In: Mutation Breeding for Disease Resistance, IAEA-PL-412/12, pp. 117–124.

    Google Scholar 

  • Jorgensen, J.H., 1976. Identification of powdery mildew resistant barley mutants and their allelic relationship. In: Barley Genetics III, Karl Thiemig, München, pp. 446–455.

    Google Scholar 

  • Jorgensen, J.H.,1977. Spectrum of resistance conferred by ml-o powdery mildew resistance genes in barley. Euphytica 26: 55–62.

    Google Scholar 

  • Jorgensen, J.H., 1984. Durability of the ml-o powdery mildew resistance genes in barley. Vortr. Pflanzenzüchtg. 6: 22–31.

    Google Scholar 

  • Jorgensen, J.H., 1987. Three kinds of powdery mildew resistance in barley. In: Barley Genetics V, Okayama Univ. Press, 583–592.

    Google Scholar 

  • Jorgensen, J.H., 1988. Screening of Hordeum vulgare for powdery mildew resistance. Nordisk Jordbrugsforsk. 70: 529.

    Google Scholar 

  • Jorgensen, J.H., 1991. Mechanism of Mlo resistance to barley powdery mildew. Sveriges Utsädesförenings Tidsskrift 2: 4550.

    Google Scholar 

  • Jorgensen, J.H. and H.P. Jensen, 1979. Inter-allelic recombination in the ml-o locus in barley. Barley Genet. Newsl. 9: 37–39.

    Google Scholar 

  • Jorgensen, J.H. and K. Mortensen, 1977. Primary infection by Erysiphe graminis f. sp. hordei of barley mutants with resistance genes in the ml-o locus. Phytopathol. 67: 678–685.

    Article  Google Scholar 

  • Kjær, B., H.P. Jensen, J. Jensen and J.H. Jorgensen, 1990. Associations between three ml-o powdery mildew resistance genes and agronomic traits in barley. Euphytica 46: 185–193.

    Article  Google Scholar 

  • Lundqvist, U., 1991. Swedish mutation research in barley with plant breeding aspects. A historical review. In: Plant Mutation Breeding for Crop Improvement, IAEA-SM-311/25, pp. 135–147.

    Google Scholar 

  • Meyer, H. and C.O. Lehmann, 1979. Resistenzeigenschaften im Gersten-and Weizensortiment Gatersleben. 22. Prüfung von Sommergersten auf ihr Verhalten gegen zwei neue Rassen von Mehltau (Erysiphe graminis DC. f. sp. hordei Marchai). Kulturpflanze 27: 181–188.

    Article  Google Scholar 

  • Negassa, M., 1985a. Geographic distribution and genotypic diversity of resistance to powdery mildew of barley in Ethiopia. Hereditas 102: 113–121.

    Article  Google Scholar 

  • Negassa, M., 1985b. Patterns of phenotypic diversity in an Ethiopian barley collection, and the Arussi-Bale Highland as a center of origin of barley. Hereditas 102: 139–150.

    Article  Google Scholar 

  • Nover, I., 1968. Eine neue, für die Resistenzzüchtung bedeutungsvolle Rasse von Erysiphe graminis DC. f. sp. hordei Marchai. Phytopath. Z. 62: 199–201.

    Google Scholar 

  • Nover, I., 1972. Untersuchungen mit einer für den Resistenzträger ‘Lyallpur 3645’ virulenten Rasse von Erysiphe graminis DC. f. sp. hordei Marchai. Arch. Pflanzenschutz 8: 439–445.

    Google Scholar 

  • Nover, I. and E. Schwarzbach, 1971. Inheritance studies with a mildew resistant barley mutant. Barley Genet. Newsl. 1: 36–37.

    Google Scholar 

  • Pedersen, L.H., 1990. 1,3-ß-glucansynthetase activity and callose synthesis in barley mlo mutants and mother varieties. (Abstract no 582) Plant Physiol. 79: 102.

    Google Scholar 

  • Russo, V.M. and W.R. Bushnell, 1989. Responses of barley cells to puncture by microneedles and to attempted penetration by Erysiphe graminis f. sp. hordei. Can. J. Bot. 67: 2912–2921.

    Article  Google Scholar 

  • Röbbelen, G. and M. Heun, 1991. Genetic analysis of partial resistance against powdery mildew in induced mutants of barley. In: Plant Mutation Breeding for Crop Improvement, IAEA-SM-311/157, pp. 93–105.

    Google Scholar 

  • Schwarzbach, E., 1976. The pleiotropic effects of the ml-o gene and their implications in breeding. In: Barley Genetics III, Karl Thiemig, München, pp. 440–445.

    Google Scholar 

  • Schwarzbach, E., 1979. Response to selection for virulence against the ml-o based mildew resistance in barley, not fitting the gene-for-gene hypothesis. Barley Genet. Newsl. 9: 85–88.

    Google Scholar 

  • Schwarzbach, E., 1987. Shifts to increased pathogenecity on ml-o varieties. In: M.S. Wolfe and E. Limpert (Eds.), Integrated Control of Cereal Mildews: Monitoring the Pathogen. Martinus Nijhoff Publishers, Dordrecht, pp. 5–7.

    Google Scholar 

  • Skou, J.P., 1985. On the enhanced callose deposition in barley with mio powdery mildew resistance genes. Phytopath. Z. 112: 207–216.

    Google Scholar 

  • Skou, J.P., J.H. Jorgensen and U. Lilholt, 1984. Comparative studies on callose formation in powdery mildew compatible and incompatible barley. Phytopath. Z. 109: 147–168.

    Article  Google Scholar 

  • Wolfe, M.S., 1992. Barley diseases: maintaining the value of our varieties. In: L. Munck (Ed.), Barley Genetics VI, vol. 2. Munksgârd Intern. Publ., Copenhagen, pp. 1055–1067.

    Google Scholar 

  • Yamaguchi, I. and A. Yamashita, 1985. Induction of mutation for powdery mildew resistance in two-rowed barley. JARQ 18: 171–175.

    Google Scholar 

  • Yokoyama, K., J.R. Aist and C.J. Bayles, 1991. A papilla-regulating extract that induces resistance to barley powdery mildew. Physiol. and Mol. Plant Pathol. 39: 71–78.

    Article  Google Scholar 

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Authors and Affiliations

  1. Plant Biology Section, Environmental Science and Technology Department, Risø National Laboratory, DK-4000, Roskilde, Denmark

    J. Helms Jørgensen

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  1. J. Helms Jørgensen
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Editors and Affiliations

  1. Cambridge Laboratory, Norwich, UK

    R. Johnson

  2. Plant Breeding International Cambridge, Cambridge, UK

    G. J. Jellis

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© 1992 Springer Science+Business Media Dordrecht

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Jørgensen, J.H. (1992). Discovery, characterization and exploitation of Mlo powdery mildew resistance in barley. In: Johnson, R., Jellis, G.J. (eds) Breeding for Disease Resistance. Developments in Plant Pathology, vol 1. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-0954-5_12

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  • DOI: https://doi.org/10.1007/978-94-017-0954-5_12

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-90-481-4124-1

  • Online ISBN: 978-94-017-0954-5

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