International Database for Barley Genes and Barley Genetic Stocks

BGS 707, Required for Puccinia graminis resistance 1, rpr1

BGN  42:757
Stock number: BGS 707
Locus name: Required for Puccinia graminis resistance 1
Locus symbol: rpr1

Previous nomenclature and gene symbolization:



Monofactorial recessive (1).
Located in chromosome 4H (1); rpr1.a is between the markers Adh4 and ABA003 and co-segregating with markers Contig4901_s_at, Contig7061_s_at, and HU03D17U_s_at (1), in 4H bin 05.


Susceptible mutant plants of Morex, when challenged with Puccinia graminis f. sp. tritici race MCCF, exhibited infection types 3 to 3+ similar to the highly susceptible cv. Steptoe as compared with infection types 0;1 to 10 for the resistant parent cv. Morex (1). The rpr1.a mutant line still has a functional Rpg1 gene as demonstrated by expression of an Rpg1 speciWc mRNA and Rpg1 protein, but it has a deletion that removed the markers Contig4901_s_at, Contig7061_s_at, and HU03D17U_s_at (1). These are candidate for the Rpr1 gene (1).
No images

Origin of mutant:

A fast neutron induced mutant in Morex (CIho 15773) (1).

Mutational events:

rpr1.a (FN559a) in Morex (CIho 15773) (1).

Mutant used for description and seed stocks:

rpr1.a (FN559a) in Morex.


1. Zhang, L., T. Fetch, J. Nirmala, D. Schmierer, R. Brueggeman, B. Steffenson, and A. Kleinhofs. 2006. Rpr1, a gene required for Rpg1-dependent resistance to stem rust in barley. Theor. Appl. Genet. 113:847-855.


A. Kleinhofs 2012. Barley Genet. Newsl. 42:752.