Next Article in Journal
Defining a Characteristic Gene Expression Set Responsible for Cancer Stem Cell-Like Features in a Sub-Population of Ewing Sarcoma Cells CADO-ES1
Previous Article in Journal
NAD Metabolome Analysis in Human Cells Using 1H NMR Spectroscopy
Article Menu
Issue 12 (December) cover image

Export Article

Open AccessArticle

Genetic Mapping of Loci for Resistance to Stem Rust in a Tetraploid Wheat Collection

1
Council for Agricultural Research and Economics, Research Centre for Cereal and Industrial Crops, 71122 Foggia (FG), Italy
2
Department of Plant Pathology, University of Minnesota, Saint Paul, MN 55108, USA
3
Council for Agricultural Research and Economics, Research Centre for Genomics and Bioinfomatics, 29017 Fiorenzuola d’Arda (PC), Italy
4
Department of Agricultural & Environmental Science, Research Unit of “Genetics and Plant Biotechnology”, University of Bari, 70126 Bari, Italy
5
Council for Agricultural Research and Economics, Research Centre for Cereal and Industrial Crops, 24126 Bergamo (BG), Italy
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Int. J. Mol. Sci. 2018, 19(12), 3907; https://doi.org/10.3390/ijms19123907
Received: 7 November 2018 / Revised: 4 December 2018 / Accepted: 4 December 2018 / Published: 6 December 2018
(This article belongs to the Section Molecular Genetics and Genomics)
  |  
PDF [1831 KB, uploaded 6 December 2018]
  |  

Abstract

Stem rust, caused by Puccinia graminis f. sp. tritici (Pgt), is a major biotic constraint to wheat production worldwide. Disease resistant cultivars are a sustainable means for the efficient control of this disease. To identify quantitative trait loci (QTLs) conferring resistance to stem rust at the seedling stage, an association mapping panel consisting of 230 tetraploid wheat accessions were evaluated for reaction to five Pgt races under greenhouse conditions. A high level of phenotypic variation was observed in the panel in response to all of the races, allowing for genome-wide association mapping of resistance QTLs in wild, landrace, and cultivated tetraploid wheats. Twenty-two resistance QTLs were identified, which were characterized by at least two marker-trait associations. Most of the identified resistance loci were coincident with previously identified rust resistance genes/QTLs; however, six regions detected on chromosomes 1B, 5A, 5B, 6B, and 7B may be novel. Availability of the reference genome sequence of wild emmer wheat accession Zavitan facilitated the search for candidate resistance genes in the regions where QTLs were identified, and many of them were annotated as NOD (nucleotide binding oligomerization domain)-like receptor (NLR) genes or genes related to broad spectrum resistance. View Full-Text
Keywords: tetraploid wheat; stem rust; resistant loci tetraploid wheat; stem rust; resistant loci
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Supplementary material

SciFeed

Share & Cite This Article

MDPI and ACS Style

Saccomanno, A.; Matny, O.; Marone, D.; Laidò, G.; Petruzzino, G.; Mazzucotelli, E.; Desiderio, F.; Blanco, A.; Gadaleta, A.; Pecchioni, N.; De Vita, P.; Steffenson, B.; Mastrangelo, A.M. Genetic Mapping of Loci for Resistance to Stem Rust in a Tetraploid Wheat Collection. Int. J. Mol. Sci. 2018, 19, 3907.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Int. J. Mol. Sci. EISSN 1422-0067 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top