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GrainGenes Reference Report: GNM-37-823

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Reference
GNM-37-823
Title
Restriction fragment length polymorphisms linked to genes for resistance to crown rust (Puccinia coronata) in near-isogenic lines of hexaploid oat (Avena sativa)
Journal
Genome
Year
1994
Volume
37
Pages
823-831
Author
Bush AL
Wise RP
Rayapati PJ
Lee M
Type
Article
Abstract
Crown rust, perhaps the most important fungal disease of oat, is caused by Puccinia coronata. An examination of near-isogenic lines (NILs) of hexaploid oat (Avena sativa) was conducted to identify markers linked to genes for resistance to crown rust. These lines were created such that a unique resistance gene is present in each of the two recurrent parent backgrounds. The six NILs of the current study, X434-II, X466-I, and Y345 (recurrent parent C237-89) and D486, D494, and D526 (recurrent parent Lang), thus provide a pair of lines to study each of three resistance genes. Restriction fragment length polymorphisms and resistance loci were mapped using the BC1F2 populations. Three markers were found linked to a locus for resistance to crown rust race 203, the closest at 1.9 cM in line D494 and 3.8 cM in line X466-I. In lines D526 and Y345 a marker was placed 1.0 and 1.9 cM, respectively, from the locus conferring resistance to crown rust race 345, and in D486 and X434-II a marker mapped at 8.0 and 10.2 cM from the locus for resistance to rust race 264B.
Allele
R264B (Avena)
R203 (Avena)
Pc71 (Avena)
Gene
R264B (Avena)
R203 (Avena)
Pc71 (Avena)
Germplasm
Lang CIav9257
[ Show all 8 ]
Map Data
Oat, D486 x Lang
Oat, X434-II x C237-89
Oat, D494 x Lang
Oat, X466-I x C237-89
Oat, Y345 x C237-89
Polymorphism
OG41 EcoRV
ISU1719 EcoRV
ISU1774 EcoRI
ISU1410 KpnI
2 Point Data
R264B/Xog41A#1
[ Show all 8 ]
Keyword
disease resistance
genetics
monocots
Image
Crown rust genes, diploid vs. hexaploid oat
Crown rust resistance markers