Tags

Type your tag names separated by a space and hit enter

Genetic Analysis Using a Multi-Parent Wheat Population Identifies Novel Sources of Septoria Tritici Blotch Resistance.
Genes (Basel). 2020 08 04; 11(8)G

Abstract

Zymoseptoria tritici is the causative fungal pathogen of septoria tritici blotch (STB) disease of wheat (Triticum aestivum L.) that continuously threatens wheat crops in Ireland and throughout Europe. Under favorable conditions, STB can cause up to 50% yield losses if left untreated. STB is commonly controlled with fungicides; however, a combination of Z. tritici populations developing fungicide resistance and increased restrictions on fungicide use in the EU has led to farmers relying on fewer active substances. Consequently, this serves to drive the emergence of Z. tritici resistance against the remaining chemistries. In response, the use of resistant wheat varieties provides a more sustainable disease management strategy. However, the number of varieties offering an adequate level of resistance against STB is limited. Therefore, new sources of resistance or improved stacking of existing resistance loci are needed to develop varieties with superior agronomic performance. Here, we identified quantitative trait loci (QTL) for STB resistance in the eight-founder "NIAB Elite MAGIC" winter wheat population. The population was screened for STB response in the field under natural infection for three seasons from 2016 to 2018. Twenty-five QTL associated with STB resistance were identified in total. QTL either co-located with previously reported QTL or represent new loci underpinning STB resistance. The genomic regions identified and the linked genetic markers serve as useful resources for STB resistance breeding, supporting rapid selection of favorable alleles for the breeding of new wheat cultivars with improved STB resistance.

Authors+Show Affiliations

Teagasc, Crop Science Department, Oak Park, R93 XE12 Carlow, Ireland.Teagasc, Crop Science Department, Oak Park, R93 XE12 Carlow, Ireland.Teagasc, Crop Science Department, Oak Park, R93 XE12 Carlow, Ireland.Teagasc, Crop Science Department, Oak Park, R93 XE12 Carlow, Ireland. AgResearch, Invermay Agricultural Centre, Private Bag, Mosgiel 50034, New Zealand. Department of Mathematics and Statistics, University of Otago, Dunedin 9016, New Zealand.Teagasc, Crop Science Department, Oak Park, R93 XE12 Carlow, Ireland.The John Bingham Laboratory, NIAB, Cambridge CB3 0LE, UK.Teagasc, Crop Science Department, Oak Park, R93 XE12 Carlow, Ireland.Teagasc, Crop Science Department, Oak Park, R93 XE12 Carlow, Ireland.Teagasc, Crop Science Department, Oak Park, R93 XE12 Carlow, Ireland.Teagasc, Crop Science Department, Oak Park, R93 XE12 Carlow, Ireland.

Pub Type(s)

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

Language

eng

PubMed ID

32759792

Citation

Riaz, Adnan, et al. "Genetic Analysis Using a Multi-Parent Wheat Population Identifies Novel Sources of Septoria Tritici Blotch Resistance." Genes, vol. 11, no. 8, 2020.
Riaz A, KockAppelgren P, Hehir JG, et al. Genetic Analysis Using a Multi-Parent Wheat Population Identifies Novel Sources of Septoria Tritici Blotch Resistance. Genes (Basel). 2020;11(8).
Riaz, A., KockAppelgren, P., Hehir, J. G., Kang, J., Meade, F., Cockram, J., Milbourne, D., Spink, J., Mullins, E., & Byrne, S. (2020). Genetic Analysis Using a Multi-Parent Wheat Population Identifies Novel Sources of Septoria Tritici Blotch Resistance. Genes, 11(8). https://doi.org/10.3390/genes11080887
Riaz A, et al. Genetic Analysis Using a Multi-Parent Wheat Population Identifies Novel Sources of Septoria Tritici Blotch Resistance. Genes (Basel). 2020 08 4;11(8) PubMed PMID: 32759792.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Genetic Analysis Using a Multi-Parent Wheat Population Identifies Novel Sources of Septoria Tritici Blotch Resistance. AU - Riaz,Adnan, AU - KockAppelgren,Petra, AU - Hehir,James Gerard, AU - Kang,Jie, AU - Meade,Fergus, AU - Cockram,James, AU - Milbourne,Dan, AU - Spink,John, AU - Mullins,Ewen, AU - Byrne,Stephen, Y1 - 2020/08/04/ PY - 2020/07/13/received PY - 2020/07/31/revised PY - 2020/07/31/accepted PY - 2020/8/8/entrez PY - 2020/8/8/pubmed PY - 2021/3/18/medline KW - MAGIC population KW - SNP genotyping array KW - genetic disease resistance KW - quantitative trait locus (QTL) mapping KW - r/qtl2 KW - septoria tritici blotch KW - wheat JF - Genes JO - Genes (Basel) VL - 11 IS - 8 N2 - Zymoseptoria tritici is the causative fungal pathogen of septoria tritici blotch (STB) disease of wheat (Triticum aestivum L.) that continuously threatens wheat crops in Ireland and throughout Europe. Under favorable conditions, STB can cause up to 50% yield losses if left untreated. STB is commonly controlled with fungicides; however, a combination of Z. tritici populations developing fungicide resistance and increased restrictions on fungicide use in the EU has led to farmers relying on fewer active substances. Consequently, this serves to drive the emergence of Z. tritici resistance against the remaining chemistries. In response, the use of resistant wheat varieties provides a more sustainable disease management strategy. However, the number of varieties offering an adequate level of resistance against STB is limited. Therefore, new sources of resistance or improved stacking of existing resistance loci are needed to develop varieties with superior agronomic performance. Here, we identified quantitative trait loci (QTL) for STB resistance in the eight-founder "NIAB Elite MAGIC" winter wheat population. The population was screened for STB response in the field under natural infection for three seasons from 2016 to 2018. Twenty-five QTL associated with STB resistance were identified in total. QTL either co-located with previously reported QTL or represent new loci underpinning STB resistance. The genomic regions identified and the linked genetic markers serve as useful resources for STB resistance breeding, supporting rapid selection of favorable alleles for the breeding of new wheat cultivars with improved STB resistance. SN - 2073-4425 UR - https://www.unboundmedicine.com/medline/citation/32759792/Genetic_Analysis_Using_a_Multi_Parent_Wheat_Population_Identifies_Novel_Sources_of_Septoria_Tritici_Blotch_Resistance_ L2 - https://www.mdpi.com/resolver?pii=genes11080887 DB - PRIME DP - Unbound Medicine ER -