Abstract
Stripe rust is one of the most destructive diseases of wheat. Breeding for resistance is the most economical and environmentally acceptable means to control stripe rust. Genetic studies on resistance sources are very important. Previous inheritance studies on Triticum aestivum subsp. spelta cv. album and wheat cultivar Lee showed that each possessed a single dominant gene for stripe rust resistance, i.e., Yr5 and Yr7, respectively. Both were located on the long arm of chromosome 2B, but due to the complexities caused by genetic background effects there was no clear evidence on the allelism or linkage status of these genes. Our study, involving an intercross of Avocet S near-isogenic lines possessing the genes, provided clear evidence for allelism or extremely close linkage of Yr5 and Yr7 based on phenotypic and molecular studies.
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References
Chen XM, Moore M, Milus EA, Long D, Marshall D, Line RF, Jackson L (2002) Wheat stripe rust epidemics and races of Puccinia striiformis f. sp. tritici in the United States in 2000. Plant Dis 86:39–46
Chen X, Soria MA, Yan G, Sun J, Dubcovsky J (2003) Development of sequence tagged site and cleaved amplified polymorphic sequence markers for wheat stripe rust resistance gene Yr5. Crop Sci 43:2058–2064
Dyck PL, Samborski DJ (1970) The genetics of two alleles for leaf rust resistance at the Lr14 locus in wheat. Can J Genet Cytol 12:689–694
Guan H, Guo Y, Wang Y, Liu T, Lin R, Xu S (2005) Microsatellite marker of the resistance gene YrSpP to wheat stripe rust. Scientia Agricultura Sinica 38:1574–1577
Johnson R, Dyck PL (1984) Resistance to yellow rust in Triticum spelta var. album and bread wheat cultivars Thatcher and Lee. In: Auriau P (ed) Proc of the 6th European and Mediterranean Cereal Rusts Conf., Grignon, France, pp 71-74
Johnson R, Wolfe MS, Scott PR (1969) Plant Breeding Institute, Cambridge, Annual Report 1968, pp 113–123
Kema GHJ, Lange W, van Silfhout CH (1995) Differential suppression of stripe rust resistance in synthetic wheat hexaploids derived from Triticum turgidum subsp. dicoccoides and Aegilops squarrosa. Phytopathology 85:425–429
Law CN (1976) Genetic control of yellow rust resistance in T. spelta album. Plant Breeding Institute, Cambridge, Annual Report 1975, pp 108-109
Ma H, Singh RP, Mujeeb-Kazi A (1995) Suppression/expression of resistance to stripe rust in synthetic hexaploid wheat (Triticum turgidum × T. tauschii). Euphytica 83:87–93
Macer RCF (1966) The formal and monosomic genetic analysis of stripe rust (Puccinia striiformis) resistance in wheat. In: Mackey J (ed) Proceedings of the 2nd international wheat genetics symposium, Lund, Sweden 1963. Hereditas Suppl 2, pp 127–142
McDonald DB (1996) Studies of stripe rust resistance genes located on chromosome 2B (XIII) of wheat. MSc Dissertation, University of Sydney, Australia
McIntosh RA, Dyck PL (1975) Cytogenical studies in wheat VII. Gene Lr23 for reaction to Puccinia recondita in Gabo and related cultivars. Aust J Biol Sci 28:201–211
McIntosh RA, Luig NH, Johnson R, Hare RA (1981) Cytogenetical studies in wheat. XI. Sr9g for reaction to Puccinia graminis tritici. Z Pflanzenzüchtg 87:274–289
McIntosh RA, Wellings CR, Park RF (1995) Wheat rusts: an atlas of resistance genes. CSIRO Publishing, Melbourne
Milus EA, Kristensen K, Hovmoller MS (2009) Evidence for increased aggressiveness in a recent widespread strain of Puccinia striiformis f. sp. tritici causing stripe rust of wheat. Phytopathology 99:89–94
Nagarajan S, Nayar SK, Bahadur P (1986) Race 13 (67 S8) virulent on Triticum spelta var. album in India. Plant Dis 70:173
Pretorius ZA, Boshoff WHP, Kema GHJ (1997) First report of Puccinia striiformis f. sp. tritici on wheat in South Africa. Plant Dis 81:424
The TT (1973) Transference of resistance to stem rust from Triticum monococcum L. to hexaploid wheat. PhD Thesis. University of Sydney, Australia
Wan A, Zhao Z, Chen X, He Z, Jin S, Jia Q, Yao G, Yang J, Wang B, Li G, Bi Y, Yuan Z (2004) Wheat stripe rust epidemic and virulence of Puccinia striiformis f. sp. tritici in China in 2002. Plant Dis 88:896–904
Wellings CR, McIntosh RA (1990) Puccinia striiformis f. sp. tritici in Australia: pathogenic changes during the first 10 years. Plant Pathol 39:316–325
Wellings CR, McIntosh RA (1998) Host-pathogen studies of wheat stripe rust in Australia. In: Slinkard AE (ed) Proceedings of the 9th international wheat genetics symposium, vol 3. Uni of Saskatchewan Extension Press, Saskatoon, Canada, pp 336–338
Wellings CR, Wright DG, Keiper F, Loughman R (2003) First detection of wheat stripe rust in Western Australia: evidence for a foreign incursion. Aust Plant Pathol 32:321–322
Williams ND, Miller JD, Klindworth DL (1992) Induced mutations of a genetic suppressor of resistance to wheat stem rust. Crop Sci 32:612–616
Acknowledgments
We thank Drs. Colin Wellings and Wanquan Chen for beneficial discussions and providing AVS NILs (CW). This research was supported by the Grains Research and Development Corporation, Australia.
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Communicated by F. Ordon.
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Zhang, P., McIntosh, R.A., Hoxha, S. et al. Wheat stripe rust resistance genes Yr5 and Yr7 are allelic. Theor Appl Genet 120, 25–29 (2009). https://doi.org/10.1007/s00122-009-1156-5
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DOI: https://doi.org/10.1007/s00122-009-1156-5