TY - JOUR
T1 - QTL Mapping of Stem Rust Resistance in Populations of Durum Wheat
AU - Marone, Daniela
AU - Mazzucotelli, Elisabetta
AU - Matny, Oadi
AU - Desiderio, Francesca
AU - Sciara, Giuseppe
AU - Maccaferri, Marco
AU - Marcotuli, Ilaria
AU - Gadaleta, Agata
AU - Steffenson, Brian
AU - Mastrangelo, Anna Maria
N1 - Funding Information:
This research was funded by MUR (Ministero dell’Università e della Ricerca), grant “CerealMed”—Enhancing diversity in Mediterranean cereal farming systems, in the frame of PRIMA Section 2—Multi-topic 2019.
Publisher Copyright:
© 2022 by the authors.
PY - 2022/10
Y1 - 2022/10
N2 - Stem rinfectionust, caused by the fungus Puccinia graminis f. sp. tritici (Pgt), is one of the most devastating fungal diseases of durum and common wheat worldwide. The identification of sources of resistance and the validation of QTLs identified through genome-wide association studies is of paramount importance for reducing the losses caused by this disease to wheat grain yield and quality. Four segregating populations whose parents showed contrasting reactions to some Pgt races were assessed in the present study, and 14 QTLs were identified on chromosomes 3A, 4A, 6A, and 6B, with some regions in common between different segregating populations. Several QTLs were mapped to chromosomal regions coincident with previously mapped stem rust resistance loci; however, their reaction to different Pgt races suggest that novel genes or alleles could be present on chromosomes 3A and 6B. Putative candidate genes with a disease-related functional annotation have been identified in the QTL regions based on information available from the reference genome of durum cv. ‘Svevo’.
AB - Stem rinfectionust, caused by the fungus Puccinia graminis f. sp. tritici (Pgt), is one of the most devastating fungal diseases of durum and common wheat worldwide. The identification of sources of resistance and the validation of QTLs identified through genome-wide association studies is of paramount importance for reducing the losses caused by this disease to wheat grain yield and quality. Four segregating populations whose parents showed contrasting reactions to some Pgt races were assessed in the present study, and 14 QTLs were identified on chromosomes 3A, 4A, 6A, and 6B, with some regions in common between different segregating populations. Several QTLs were mapped to chromosomal regions coincident with previously mapped stem rust resistance loci; however, their reaction to different Pgt races suggest that novel genes or alleles could be present on chromosomes 3A and 6B. Putative candidate genes with a disease-related functional annotation have been identified in the QTL regions based on information available from the reference genome of durum cv. ‘Svevo’.
KW - resistance loci
KW - stem rust
KW - tetraploid wheat
UR - http://www.scopus.com/inward/record.url?scp=85140765964&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85140765964&partnerID=8YFLogxK
U2 - 10.3390/genes13101793
DO - 10.3390/genes13101793
M3 - Article
C2 - 36292678
AN - SCOPUS:85140765964
SN - 2073-4425
VL - 13
JO - Genes
JF - Genes
IS - 10
M1 - 1793
ER -