Genetic mapping of the powdery mildew resistance gene Pm7 on oat chromosome 5D

Abstrakt

Resistance of oat to Blumeria graminis DC. f. sp. avenae is an important breeding goal in Central and Western Europe. In this study, the position of the effective and widely used resistance gene Pm7 in the oat genome was determined based on three independent experiments with different genetic backgrounds: genome-wide association mapping in a diverse set of inbred oat lines and binary phenotype mapping in two bi-parental populations. Powdery mildew resistance was assessed in the field as well as by detached leaf tests in the laboratory. Genotyping-by-sequencing was conducted to establish compre- hensive genetic fingerprints for subsequent genetic mapping experiments. All three mapping approaches located the gene to the distal part of the long arm of chromosome 5D in the hexaploid oat genome sequences of OT3098 and ‘Sang.’ Markers from this region were homologous to a region of chromosome 2Ce of the C-genome species, Avena eriantha, the donor of Pm7, which appears to be the ancestral source of a translocated region on the hexaploid chromosome 5D.

Autorzy

Sophie Brodführer
Sophie Brodführer
Volker Mohler
Volker Mohler
Melanie Stadlmeier
Melanie Stadlmeier
Steffen Beuch
Steffen Beuch
Martin Mascher
Martin Mascher
Nicholas A. Tinker
Nicholas A. Tinker
Wubishet A. Bekele
Wubishet A. Bekele
Bernd Hackauf
Bernd Hackauf
Matthias Heinrich Herrmann
Matthias Heinrich Herrmann
artykuł
THEORETICAL AND APPLIED GENETICS
Angielski
2023
136
53
otwarte czasopismo
CC BY 4.0 Uznanie autorstwa 4.0
ostateczna wersja opublikowana
w momencie opublikowania
2023-03-13
100
4,4
0
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