International Database for Barley Genes and Barley Genetic Stocks
BGS 149, Reaction to Puccinia coronata var. hordei 1, Rpc1
Stock number: BGS 149
Locus name: Reaction to Puccinia coronata var. hordei 1
Locus symbol: Rpc1
Previous nomenclature and gene symbolization:
None.
Inheritance:
Monofactorial dominant (3).
Located in chromosome 3H centromeric region (1); approximately 2.5 cM from RAPD marker OPO08-700 (1).
Description:
Crown rust of barley was identified as a new disease of barley in North America (2). In seedling tests, resistant cultivars exhibited necrotic or chlorotic flecks (0; to ; infection types) at infection sites and no sporulation (3). Adult plant reactions of Hor2596 were resistant to moderately resistant (3). Hor 2596 is one of the differential lines for barley leaf rust (caused by Puccinia hordei), see BGS 032, Rph9.i (reaction to Puccinia hordei 9). The F1 plants from the Bowman/Hor2596 cross exhibited slightly higher infection types (1,2 reaction) than the resistant parent (3).
No images
Origin of mutant:
Natural occurrence in Abyssinian (Hor 2596, CIho 1234) (3).
Mutational events:
Rpc1.a in Hor 2596 (GSHO 1601) (3).
Mutant used for description and seed stocks:
Rpc1.a in Hor 2596 (GSHO 1601) (3).
References:
1. Agrama, H.A., L. Dahleen, M. Wentz, Y, Jin, and B. Steffenson. 2004. Molecular mapping of the crown rust resistance gene Rpc1 in barley. Phytopathology 94:858-861.
2. Jin, Y., and B. Steffenson. 1999. Puccinia coronata var. hordei nov.: morphology and pathogenicity. Mycologia 91:877-884.
3. Jin, Y., and B. Steffenson. 2002. Sources and genetics of crown rust resistance in barley. Phytopathology 92:1064-1067.
Prepared:
Y. Jin and J.D. Franckowiak. 2007. Barley Genet. Newsl. 37:232.
