Genetic Dissection of Resistance to the Three Fungal Plant Pathogens Blumeria graminis, Zymoseptoria tritici, and Pyrenophora tritici-repentis Using a Multiparental Winter Wheat Population
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...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Oxford University Press
2019-05-01
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| Series: | G3: Genes, Genomes, Genetics |
| Subjects: | |
| Online Access: | http://g3journal.org/lookup/doi/10.1534/g3.119.400068 |
| _version_ | 1818622184579399680 |
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| author | Melanie Stadlmeier Lise Nistrup Jørgensen Beatrice Corsi James Cockram Lorenz Hartl Volker Mohler |
| author_facet | Melanie Stadlmeier Lise Nistrup Jørgensen Beatrice Corsi James Cockram Lorenz Hartl Volker Mohler |
| author_sort | Melanie Stadlmeier |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-16T18:21:08Z |
| format | Article |
| id | doaj.art-e729ad6b6b13464aa66c9280d4147b19 |
| institution | Directory Open Access Journal |
| issn | 2160-1836 |
| language | English |
| last_indexed | 2024-12-16T18:21:08Z |
| publishDate | 2019-05-01 |
| publisher | Oxford University Press |
| record_format | Article |
| series | G3: Genes, Genomes, Genetics |
| spelling | doaj.art-e729ad6b6b13464aa66c9280d4147b192022-12-21T22:21:34ZengOxford University PressG3: Genes, Genomes, Genetics2160-18362019-05-01951745175710.1534/g3.119.40006841Genetic Dissection of Resistance to the Three Fungal Plant Pathogens Blumeria graminis, Zymoseptoria tritici, and Pyrenophora tritici-repentis Using a Multiparental Winter Wheat PopulationMelanie StadlmeierLise Nistrup JørgensenBeatrice CorsiJames CockramLorenz HartlVolker MohlerBread 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.http://g3journal.org/lookup/doi/10.1534/g3.119.400068QTL analysisMAGICPowdery mildewSeptoria tritici blotchTan spotMultiparent Advanced Generation Inter-Cross (MAGIC)multiparental populationsMPP |
| spellingShingle | Melanie Stadlmeier Lise Nistrup Jørgensen Beatrice Corsi James Cockram Lorenz Hartl Volker Mohler 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: Genes, Genomes, Genetics QTL analysis MAGIC Powdery mildew Septoria tritici blotch Tan spot Multiparent Advanced Generation Inter-Cross (MAGIC) multiparental populations MPP |
| title | Genetic Dissection of Resistance to the Three Fungal Plant Pathogens Blumeria graminis, Zymoseptoria tritici, and Pyrenophora tritici-repentis Using a Multiparental Winter Wheat Population |
| title_full | Genetic Dissection of Resistance to the Three Fungal Plant Pathogens Blumeria graminis, Zymoseptoria tritici, and Pyrenophora tritici-repentis Using a Multiparental Winter Wheat Population |
| title_fullStr | Genetic Dissection of Resistance to the Three Fungal Plant Pathogens Blumeria graminis, Zymoseptoria tritici, and Pyrenophora tritici-repentis Using a Multiparental Winter Wheat Population |
| title_full_unstemmed | Genetic Dissection of Resistance to the Three Fungal Plant Pathogens Blumeria graminis, Zymoseptoria tritici, and Pyrenophora tritici-repentis Using a Multiparental Winter Wheat Population |
| title_short | Genetic Dissection of Resistance to the Three Fungal Plant Pathogens Blumeria graminis, Zymoseptoria tritici, and Pyrenophora tritici-repentis Using a Multiparental Winter Wheat Population |
| title_sort | genetic dissection of resistance to the three fungal plant pathogens blumeria graminis zymoseptoria tritici and pyrenophora tritici repentis using a multiparental winter wheat population |
| topic | QTL analysis MAGIC Powdery mildew Septoria tritici blotch Tan spot Multiparent Advanced Generation Inter-Cross (MAGIC) multiparental populations MPP |
| url | http://g3journal.org/lookup/doi/10.1534/g3.119.400068 |
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