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GrainGenes Gene Report: Lr19 (Triticum)

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Gene
Lr19 (Triticum)  [ Marker Report ]
Gene Class
Reaction to Puccinia recondita Rob. ex Desm.
Pathology
Leaf Rust
Locus
Lr19
Lr19^A^
Reference
ReferenceMarais GF (1992) The modification of a common wheat - Thinopyrum distichum translocated chromosome with a locus homoeoalletic to Lr19. Theoretical and Applied Genetics 35:73-78.
ReferenceMarais 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.
ReferenceEizenga GC (1987) Locating the Agropyron segment in wheat - Agropyron transfer no. 12. Genome 29:365-366.
ReferenceKnott 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.
ReferenceBrowder LE (1972) Designation of two genes for resistance to Puccinia recondita in Triticum aestivum. Crop Science 12:705-706.
URL
Protocol at MASwheat
Chromosome
7A
ReferenceEizenga GC (1987) Locating the Agropyron segment in wheat - Agropyron transfer no. 12. Genome 29:365-366.
7D
ReferenceDvorak J and Knott DR (1977) Homoeologous chromatin exchange in a radiation-induced gene transfer. Canadian Journal of Genetics and Cytology 19:125-131.
ReferenceMcIntosh 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.
ReferenceSharma 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.
Chromosome Arm
7AL
ReferenceEizenga GC (1987) Locating the Agropyron segment in wheat - Agropyron transfer no. 12. Genome 29:365-366.
7DL
ReferenceDvorak J and Knott DR (1977) Homoeologous chromatin exchange in a radiation-induced gene transfer. Canadian Journal of Genetics and Cytology 19:125-131.
ReferenceMcIntosh 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.
ReferenceSharma 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.
Germplasm
Hexaploid stockSears' T7A-7Ag#12
ReferenceEizenga GC (1987) Locating the Agropyron segment in wheat - Agropyron transfer no. 12. Genome 29:365-366.
Homologous chromosome substitution lineAGRUS
Near isogenic stockAGATHA
ReferenceMcIntosh 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.
AGATHA
ReferenceSharma 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.
Comment
Gene was derived from 7AgL of Ag. elongatum. It is present in 7A in T7A-7Ag and in 7D in T7D-7Ag.
Knott (489) obtained two mutants of Agatha possessing Lr19, but with reduced levels of yellow pigment in the flour. Marais (639) reported that a gene very similar to Lr19, designated Lr19d, was present in the Inia 66 x Thinopyrum distichum derivative, Indis. Marais (639, 641) obtained mutants and recombinant lines with intermediate levels of, or no, yellow pigment. He showed (641) that in the lines lacking yellow pigment, Lr19d was transferred to a chromosome other than 7D.
Hexaploid stocks: see Sr25.
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
2 Point Data
Lr19/Xcdo775
Wheat Gene Catalog Reference
639
ReferenceMarais 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.
641
ReferenceMarais GF (1992) The modification of a common wheat - Thinopyrum distichum translocated chromosome with a locus homoeoalletic to Lr19. Theoretical and Applied Genetics 35:73-78.
231
ReferenceEizenga GC (1987) Locating the Agropyron segment in wheat - Agropyron transfer no. 12. Genome 29:365-366.
489
ReferenceKnott 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.
Info Source
ReferenceMcIntosh 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