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GrainGenes Marker Report: Sr25^A^

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Locus	Sr25^A^
Type	Gene
Chromosome	7D
Chromosome Arm	7DL
Map	Triticum-Genes-7D 24.5
	[ Show Nearby Loci ]
Map Data	Wheat genes
Associated Gene	Sr25 (Triticum)
Gene Class	Reaction to Puccinia graminis Pers.
Remark	Superscript^A^ indicates that the gene mapped was transferred from an alien source, for which the map location is that of the wheat-alien chromosome break-point.
Possible Orthologs	Sr25
Gene Associated with Locus	Sr25 (Triticum)
Gene Class	Reaction to Puccinia graminis Pers.
Locus	Sr25 Sr25^A^
Reference	[ Hide all but 1 of 10 ] Yu L et al. (2014) A consensus map for Ug99 stem rust resistance loci in wheat. Theoretical and Applied Genetics 127:1561-1581. Liu S et al. (2010) Diagnostic and co-dominant PCR markers for wheat stem rust resistance genes Sr25 and Sr26 Theoretical and Applied Genetics 120:691-697. Yu LX et al. (2010) Haplotype diversity of stem rust resistance loci in uncharacterized wheat lines Molecular Breeding 26:667-680. Marais GF (1992) Gamma irradiation induced deletions in an alien chromosome segment of the wheat 'Indis' and their use in gene mapping. Genome 35:225-229. Marais GF (1992) The modification of a common wheat - Thinopyrum distichum translocated chromosome with a locus homoeoalletic to Lr19. Theoretical and Applied Genetics 85:73-78. Knott DR (1984) The genetic nature of mutations of a gene for yellow pigment linked to Lr19 in 'Agatha' wheat. Canadian Journal of Genetics and Cytology 26:392-393. McIntosh RA et al. (1977) Inheritance of leaf rust and stem rust resistances in wheat cultivars Agent and Agatha. Australian Journal of Agricultural Research 28:37-45. Sharma D and Knott DR (1966) The transfer of leaf rust resistance from Agropyron to Triticum by irradiation. Canadian Journal of Genetics and Cytology 8:137-143. Soria MA and Dubcovsky J MAS Wheat. Bringing Genomics to the Wheat Fields. Quality traits. Semolina color / Leaf and stem rust resistance. Sears ER WGS-95-1333-Ref#916.
URL	Protocol at MASwheat for rusts resistance genes Lr19, Sr25 and color gene Y
Chromosome	7A Eizenga GC (1987) Locating the Agropyron segment in wheat - Agropyron transfer no. 12. Genome 29:365-366. 7D Dvorak J and Knott DR (1977) Homoeologous chromatin exchange in a radiation-induced gene transfer. Canadian Journal of Genetics and Cytology 19:125-131. McIntosh RA et al. (1977) Inheritance of leaf rust and stem rust resistances in wheat cultivars Agent and Agatha. Australian Journal of Agricultural Research 28:37-45.
Chromosome Arm	7AL Eizenga GC (1987) Locating the Agropyron segment in wheat - Agropyron transfer no. 12. Genome 29:365-366. 7DL Dvorak J and Knott DR (1977) Homoeologous chromatin exchange in a radiation-induced gene transfer. Canadian Journal of Genetics and Cytology 19:125-131. McIntosh RA et al. (1977) Inheritance of leaf rust and stem rust resistances in wheat cultivars Agent and Agatha. Australian Journal of Agricultural Research 28:37-45.
Germplasm	Alien chromosome substitution line Chinese Spring 7Ag(7D) Sears ER WGS-95-1333-Ref#916. Hexaploid stock AGATHA McIntosh RA et al. (1977) Inheritance of leaf rust and stem rust resistances in wheat cultivars Agent and Agatha. Australian Journal of Agricultural Research 28:37-45. Near isogenic stock Sears' T7A-7Ag#12 Eizenga GC (1987) Locating the Agropyron segment in wheat - Agropyron transfer no. 12. Genome 29:365-366. Sr25/9*LMPG Knott DR (1990) Near-isogenic lines of wheat carrying genes for stem rust resistance. Crop Science 30:901-905.
Comment	Gene was derived from Ag. elongatum and is present in hexaploid stocks in a translocated chromosome, either T7A-7Ag or T7D-7Ag. Agatha carries T7D-7Ag. Hexaploid stocks: Knott (489) obtained two mutants of Agatha with reduced levels of yellow pigment in the flour. One of these mutants lacked Sr25. Marais (639) reported that a gene very similar to Sr25, designated Sr25d, was present in the Inia 66 x Thinopyrum distichum derivative, Indis. Marais (639, 641) also obtained mutants with reduced yellow pigment in Indis derivatives and some of these lacked Sr25d. Near-isogenic stocks: Sears' 7D-7Ag translocations (679, 926). Completely linked in coupling with Lr19 (679). Sears' T7D-7Ag#11 carries neither Sr25 nor Lr19 (660). The MASWheat protocols characterize the semolina color gene Y, the leaf rust resistance gene Lr19 and stem rust resistance gene Sr25. All three genes originate from the distal region of 7EL from Lophopyrum ponticum.
Image	C-bands and GISH for Lr19/Sr25
Wheat Gene Catalog Reference	639 Marais GF (1992) Gamma irradiation induced deletions in an alien chromosome segment of the wheat 'Indis' and their use in gene mapping. Genome 35:225-229. [ Show all 6 ]
Info Source	McIntosh RA et al. (1995) Catalogue of gene symbols for wheat. Proceedings of the 8th International Wheat Genetics Symposium 1333-1500.
Data Curator	Hart, Gary E. 95.08.24

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