TY - JOUR
T1 - Characterisation of barley landraces from Syria and Jordan for resistance to rhynchosporium and identification of diagnostic markers for Rrs1Rh4
AU - Looseley, Mark E.
AU - Griffe, Lucie L.
AU - Büttner, Bianca
AU - Wright, Kathryn M.
AU - Bayer, Micha M.
AU - Coulter, Max
AU - Thauvin, Jean-Noël
AU - Middlefell-Williams, Jill
AU - Maluk, Marta
AU - Okpo, Aleksandra
AU - Kettles, Nicola
AU - Werner, Peter
AU - Byrne, Ed
AU - Avrova, Anna
PY - 2020/4
Y1 - 2020/4
N2 - Rhynchosporium or barley scald, caused by the destructive fungal pathogen Rhynchosporium commune, is one of the most economically important diseases of barley in the world. Barley landraces from Syria and Jordan demonstrated high resistance to rhynchosporium in the field. Genotyping of a wide range of barley cultivars and landraces, including known sources of different Rrs1 genes/alleles, across the Rrs1 interval, followed by association analysis of this genotypic data with resistance phenotypes to R. commune isolates recognised by Rrs1, allowed the identification of diagnostic markers for Rrs1 Rh4. These markers are specific to Rrs1 Rh4 and do not detect other Rrs1 genes/alleles. The Rrs1 Rh4 diagnostic markers represent a resource that can be exploited by breeders for the sustainable deployment of varietal resistance in new cultivars. Thirteen out of the 55 most resistant Syrian and Jordanian landraces were shown to contain markers specific to Rrs1 Rh4. One of these lines came from Jordan, with the remaining 12 lines from different locations in Syria. One of the Syrian landraces containing Rrs1 Rh4 was also shown to have Rrs2. The remaining landraces that performed well against rhynchosporium in the field are likely to contain other resistance genes and represent an important novel resource yet to be exploited by European breeders.
AB - Rhynchosporium or barley scald, caused by the destructive fungal pathogen Rhynchosporium commune, is one of the most economically important diseases of barley in the world. Barley landraces from Syria and Jordan demonstrated high resistance to rhynchosporium in the field. Genotyping of a wide range of barley cultivars and landraces, including known sources of different Rrs1 genes/alleles, across the Rrs1 interval, followed by association analysis of this genotypic data with resistance phenotypes to R. commune isolates recognised by Rrs1, allowed the identification of diagnostic markers for Rrs1 Rh4. These markers are specific to Rrs1 Rh4 and do not detect other Rrs1 genes/alleles. The Rrs1 Rh4 diagnostic markers represent a resource that can be exploited by breeders for the sustainable deployment of varietal resistance in new cultivars. Thirteen out of the 55 most resistant Syrian and Jordanian landraces were shown to contain markers specific to Rrs1 Rh4. One of these lines came from Jordan, with the remaining 12 lines from different locations in Syria. One of the Syrian landraces containing Rrs1 Rh4 was also shown to have Rrs2. The remaining landraces that performed well against rhynchosporium in the field are likely to contain other resistance genes and represent an important novel resource yet to be exploited by European breeders.
UR - http://www.scopus.com/inward/record.url?scp=85078297196&partnerID=8YFLogxK
U2 - 10.1007/s00122-020-03545-9
DO - 10.1007/s00122-020-03545-9
M3 - Article
C2 - 31965232
SN - 0040-5752
VL - 133
SP - 1243
EP - 1264
JO - Theoretical and Applied Genetics
JF - Theoretical and Applied Genetics
IS - 4
ER -