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Genetic Dissection of Resistance to the Three Fungal Plant Pathogens Blumeria graminis, Zymoseptoria tritici, and Pyrenophora tritici-repentis Using a Multiparental Winter Wheat Population.
G3 (Bethesda). 2019 05 07; 9(5):1745-1757.G

Abstract

Bread wheat (Triticum aestivum L.) is one of the world's most important crop species. The development of new varieties resistant to multiple pathogens is an ongoing task in wheat breeding, especially in times of increasing demand for sustainable agricultural practices. Despite this, little is known about the relations between various fungal disease resistances at the genetic level, and the possible consequences for wheat breeding strategies. As a first step to fill this gap, we analyzed the genetic relations of resistance to the three fungal diseases - powdery mildew (PM), septoria tritici blotch (STB), and tan spot (TS) - using a winter wheat multiparent advanced generation intercross population. Six, seven, and nine QTL for resistance to PM, STB, and TS, respectively, were genetically mapped. Additionally, 15 QTL were identified for the three agro-morphological traits plant height, ear emergence time, and leaf angle distribution. Our results suggest that resistance to STB and TS on chromosome 2B is conferred by the same genetic region. Furthermore, we identified two genetic regions on chromosome 1AS and 7AL, which are associated with all three diseases, but not always in a synchronal manner. Based on our results, we conclude that parallel marker-assisted breeding for resistance to the fungal diseases PM, STB, and TS appears feasible. Knowledge of the genetic co-localization of alleles with contrasting effects for different diseases, such as on chromosome 7AL, allows the trade-offs of selection of these regions to be better understood, and ultimately determined at the genic level.

Authors+Show Affiliations

Bavarian State Research Center for Agriculture, Institute for Crop Science and Plant Breeding, Freising 85354, Germany melanie.stadlmeier@mytum.de. Technical University of Munich, TUM School of Life Sciences Weihenstephan, Freising 85354, Germany.Aarhus University, Department of Agroecology, Slagelse 4200, Denmark.John Bingham Laboratory, NIAB, Huntingdon Road, Cambridge CB3 0LE, United Kingdom.John Bingham Laboratory, NIAB, Huntingdon Road, Cambridge CB3 0LE, United Kingdom.Bavarian State Research Center for Agriculture, Institute for Crop Science and Plant Breeding, Freising 85354, Germany.Bavarian State Research Center for Agriculture, Institute for Crop Science and Plant Breeding, Freising 85354, Germany. Technical University of Munich, TUM School of Life Sciences Weihenstephan, Freising 85354, Germany.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

30902891

Citation

Stadlmeier, Melanie, et al. "Genetic Dissection of Resistance to the Three Fungal Plant Pathogens Blumeria Graminis, Zymoseptoria Tritici, and Pyrenophora Tritici-repentis Using a Multiparental Winter Wheat Population." G3 (Bethesda, Md.), vol. 9, no. 5, 2019, pp. 1745-1757.
Stadlmeier M, Jørgensen LN, Corsi B, et al. Genetic Dissection of Resistance to the Three Fungal Plant Pathogens Blumeria graminis, Zymoseptoria tritici, and Pyrenophora tritici-repentis Using a Multiparental Winter Wheat Population. G3 (Bethesda). 2019;9(5):1745-1757.
Stadlmeier, M., Jørgensen, L. N., Corsi, B., Cockram, J., Hartl, L., & Mohler, V. (2019). Genetic Dissection of Resistance to the Three Fungal Plant Pathogens Blumeria graminis, Zymoseptoria tritici, and Pyrenophora tritici-repentis Using a Multiparental Winter Wheat Population. G3 (Bethesda, Md.), 9(5), 1745-1757. https://doi.org/10.1534/g3.119.400068
Stadlmeier M, et al. Genetic Dissection of Resistance to the Three Fungal Plant Pathogens Blumeria Graminis, Zymoseptoria Tritici, and Pyrenophora Tritici-repentis Using a Multiparental Winter Wheat Population. G3 (Bethesda). 2019 05 7;9(5):1745-1757. PubMed PMID: 30902891.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Genetic Dissection of Resistance to the Three Fungal Plant Pathogens Blumeria graminis, Zymoseptoria tritici, and Pyrenophora tritici-repentis Using a Multiparental Winter Wheat Population. AU - Stadlmeier,Melanie, AU - Jørgensen,Lise Nistrup, AU - Corsi,Beatrice, AU - Cockram,James, AU - Hartl,Lorenz, AU - Mohler,Volker, Y1 - 2019/05/07/ PY - 2019/3/25/pubmed PY - 2019/11/30/medline PY - 2019/3/24/entrez KW - MAGIC KW - MPP KW - Multiparent Advanced Generation Inter-Cross (MAGIC) KW - Powdery mildew KW - QTL analysis KW - Septoria tritici blotch KW - Tan spot KW - multiparental populations SP - 1745 EP - 1757 JF - G3 (Bethesda, Md.) JO - G3 (Bethesda) VL - 9 IS - 5 N2 - Bread wheat (Triticum aestivum L.) is one of the world's most important crop species. The development of new varieties resistant to multiple pathogens is an ongoing task in wheat breeding, especially in times of increasing demand for sustainable agricultural practices. Despite this, little is known about the relations between various fungal disease resistances at the genetic level, and the possible consequences for wheat breeding strategies. As a first step to fill this gap, we analyzed the genetic relations of resistance to the three fungal diseases - powdery mildew (PM), septoria tritici blotch (STB), and tan spot (TS) - using a winter wheat multiparent advanced generation intercross population. Six, seven, and nine QTL for resistance to PM, STB, and TS, respectively, were genetically mapped. Additionally, 15 QTL were identified for the three agro-morphological traits plant height, ear emergence time, and leaf angle distribution. Our results suggest that resistance to STB and TS on chromosome 2B is conferred by the same genetic region. Furthermore, we identified two genetic regions on chromosome 1AS and 7AL, which are associated with all three diseases, but not always in a synchronal manner. Based on our results, we conclude that parallel marker-assisted breeding for resistance to the fungal diseases PM, STB, and TS appears feasible. Knowledge of the genetic co-localization of alleles with contrasting effects for different diseases, such as on chromosome 7AL, allows the trade-offs of selection of these regions to be better understood, and ultimately determined at the genic level. SN - 2160-1836 UR - https://www.unboundmedicine.com/medline/citation/30902891/Genetic_Dissection_of_Resistance_to_the_Three_Fungal_Plant_Pathogens_Blumeria_graminis_Zymoseptoria_tritici_and_Pyrenophora_tritici_repentis_Using_a_Multiparental_Winter_Wheat_Population_ L2 - http://www.g3journal.org/cgi/pmidlookup?view=long&pmid=30902891 DB - PRIME DP - Unbound Medicine ER -