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Identification and genetic mapping of PmAF7DS a powdery mildew resistance gene in bread wheat (Triticum aestivum L.).
Theor Appl Genet. 2016 Jun; 129(6):1127-37.TA

Abstract

KEY MESSAGE

Gene PmAF7DS confers resistance to wheat powdery mildew (isolate Bgt#211); it was mapped to a 14.6-cM interval (Xgwm350 a- Xbarc184) on chromosome 7DS. The flanking markers could be applied in MAS breeding. Wheat powdery mildew (Pm) is caused by the biotrophic pathogen Blumeria graminis tritici (DC.) (Bgt). An ongoing threat of breakdown of race-specific resistance to Pm requires a continuous effort to discover new alleles in the wheat gene pool. Developing new cultivars with improved disease resistance is an economically and environmentally safe approach to reduce yield losses. To identify and characterize genes for resistance against Pm in bread wheat we used the (Arina × Forno) RILs population. Initially, the two parental lines were screened with a collection of 61 isolates of Bgt from Israel. Three Pm isolates Bgt#210 , Bgt#211 and Bgt#213 showed differential reactions in the parents: Arina was resistant (IT = 0), whereas Forno was moderately susceptible (IT = -3). Isolate Bgt#211 was then used to inoculate the RIL population. The segregation pattern of plant reactions among the RILs indicates that a single dominant gene controls the conferred resistance. A genetic map of the region containing this gene was assembled with DNA markers and assigned to the 7D physical bin map. The gene, temporarily designated PmAF7DS, was located in the distal region of chromosome arm 7DS. The RILs were also inoculated with Bgt#210 and Bgt#213. The plant reactions to these isolates showed high identity with the reaction to Bgt#211, indicating the involvement of the same gene or closely linked, but distinct single genes. The genomic location of PmAF7DS, in light of other Pm genes on 7DS is discussed.

Authors+Show Affiliations

Department of Vegetables and Field Crops, Institute of Plant Sciences, Agricultural Research Organization (ARO)-Volcani Center, 5025000, Bet Dagan, Israel.Department of Vegetables and Field Crops, Institute of Plant Sciences, Agricultural Research Organization (ARO)-Volcani Center, 5025000, Bet Dagan, Israel.Department of Vegetables and Field Crops, Institute of Plant Sciences, Agricultural Research Organization (ARO)-Volcani Center, 5025000, Bet Dagan, Israel.Department of Plant Pathology and Microbiology, Robert H. Smith Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, 7610001, Rehovot, Israel.Institute of Plant Biology, University of Zurich, Zollikerstrasse 107, 8008, Zurich, Switzerland.Department of Vegetables and Field Crops, Institute of Plant Sciences, Agricultural Research Organization (ARO)-Volcani Center, 5025000, Bet Dagan, Israel. roib@volcani.agri.gov.il.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

26934890

Citation

Bheema Lingeswara Reddy, I N., et al. "Identification and Genetic Mapping of PmAF7DS a Powdery Mildew Resistance Gene in Bread Wheat (Triticum Aestivum L.)." TAG. Theoretical and Applied Genetics. Theoretische Und Angewandte Genetik, vol. 129, no. 6, 2016, pp. 1127-37.
Bheema Lingeswara Reddy IN, Chandrasekhar K, Zewdu Y, et al. Identification and genetic mapping of PmAF7DS a powdery mildew resistance gene in bread wheat (Triticum aestivum L.). Theor Appl Genet. 2016;129(6):1127-37.
Bheema Lingeswara Reddy, I. N., Chandrasekhar, K., Zewdu, Y., Dinoor, A., Keller, B., & Ben-David, R. (2016). Identification and genetic mapping of PmAF7DS a powdery mildew resistance gene in bread wheat (Triticum aestivum L.). TAG. Theoretical and Applied Genetics. Theoretische Und Angewandte Genetik, 129(6), 1127-37. https://doi.org/10.1007/s00122-016-2688-0
Bheema Lingeswara Reddy IN, et al. Identification and Genetic Mapping of PmAF7DS a Powdery Mildew Resistance Gene in Bread Wheat (Triticum Aestivum L.). Theor Appl Genet. 2016;129(6):1127-37. PubMed PMID: 26934890.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Identification and genetic mapping of PmAF7DS a powdery mildew resistance gene in bread wheat (Triticum aestivum L.). AU - Bheema Lingeswara Reddy,I N, AU - Chandrasekhar,K, AU - Zewdu,Y, AU - Dinoor,A, AU - Keller,B, AU - Ben-David,R, Y1 - 2016/03/02/ PY - 2015/12/16/received PY - 2016/01/30/accepted PY - 2016/3/4/entrez PY - 2016/3/5/pubmed PY - 2017/1/20/medline SP - 1127 EP - 37 JF - TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik JO - Theor Appl Genet VL - 129 IS - 6 N2 - KEY MESSAGE: Gene PmAF7DS confers resistance to wheat powdery mildew (isolate Bgt#211); it was mapped to a 14.6-cM interval (Xgwm350 a- Xbarc184) on chromosome 7DS. The flanking markers could be applied in MAS breeding. Wheat powdery mildew (Pm) is caused by the biotrophic pathogen Blumeria graminis tritici (DC.) (Bgt). An ongoing threat of breakdown of race-specific resistance to Pm requires a continuous effort to discover new alleles in the wheat gene pool. Developing new cultivars with improved disease resistance is an economically and environmentally safe approach to reduce yield losses. To identify and characterize genes for resistance against Pm in bread wheat we used the (Arina × Forno) RILs population. Initially, the two parental lines were screened with a collection of 61 isolates of Bgt from Israel. Three Pm isolates Bgt#210 , Bgt#211 and Bgt#213 showed differential reactions in the parents: Arina was resistant (IT = 0), whereas Forno was moderately susceptible (IT = -3). Isolate Bgt#211 was then used to inoculate the RIL population. The segregation pattern of plant reactions among the RILs indicates that a single dominant gene controls the conferred resistance. A genetic map of the region containing this gene was assembled with DNA markers and assigned to the 7D physical bin map. The gene, temporarily designated PmAF7DS, was located in the distal region of chromosome arm 7DS. The RILs were also inoculated with Bgt#210 and Bgt#213. The plant reactions to these isolates showed high identity with the reaction to Bgt#211, indicating the involvement of the same gene or closely linked, but distinct single genes. The genomic location of PmAF7DS, in light of other Pm genes on 7DS is discussed. SN - 1432-2242 UR - https://www.unboundmedicine.com/medline/citation/26934890/Identification_and_genetic_mapping_of_PmAF7DS_a_powdery_mildew_resistance_gene_in_bread_wheat__Triticum_aestivum_L___ L2 - https://dx.doi.org/10.1007/s00122-016-2688-0 DB - PRIME DP - Unbound Medicine ER -