Journal article
Development and characterization of a compensating wheat-Thinopyrum intermedium Robertsonian translocation with Sr44 resistance to stem rust (Ug99)
Theoretical and applied genetics, Vol.126(5), pp.1167-1177
05/2013
Handle:
https://hdl.handle.net/2376/112693
PMID: 23358862
Abstract
The emergence of the highly virulent Ug99 race complex of the stem rust fungus (Puccinia graminis Pers. f. sp. tritici Eriks. and Henn.) threatens wheat (Triticum
aestivum L.) production worldwide. One of the effective genes against the Ug99 race complex is Sr44, which was derived from Thinopyrum intermedium (Host) Barkworth and D.R. Dewey and mapped to the short arm of 7J (designated 7J#1S) present in the noncompensating T7DS-7J#1L∙7J#1S translocation. Noncompensating wheat-alien translocations are known to cause genomic duplications and deficiencies leading to poor agronomic performance, precluding their direct use in wheat improvement. The present study was initiated to produce compensating wheat-Th. intermedium Robertsonian translocations with Sr44 resistance. One compensating RobT was identified consisting of the wheat 7DL arm translocated to the Th. intermedium 7J#1S arm resulting in T7DL∙7J#1S. The T7DL∙7J#1S stock was designated as TA5657. The 7DL∙7J#1S stock carries Sr44 and has resistance to the Ug99 race complex. This compensating RobT with Sr44 resistance may be useful in wheat improvement. In addition, we identified an unnamed stem rust resistance gene located on the 7J#1L arm that confers resistance not only to Ug99, but also to race TRTTF, which is virulent to Sr44. However, the action of the second gene can be modified by the presence of suppressors in the recipient wheat cultivars.
Metrics
11 Record Views
Details
- Title
- Development and characterization of a compensating wheat-Thinopyrum intermedium Robertsonian translocation with Sr44 resistance to stem rust (Ug99)
- Creators
- Wenxuan Liu - Laboratory of Cell and Chromosome Engineering, College of Life Sciences Henan Agricultural University Zhengzhou Henan 450002 People’s Republic of ChinaTatiana Danilova - Wheat Genetic and Genomic Resources Center, Department of Plant Pathology, Throckmorton Plant Sciences Center Kansas State University Manhattan KS 66506-5502 USAMatthew Rouse - USDA-ARS Cereal Disease Laboratory University of Minnesota St. Paul MN 55108 USARobert Bowden - USDA-ARS, Hard Winter Wheat Genetics Research Unit Kansas State University, Throckmorton Plant Sciences Center Manhattan KS 66506-5502 USABernd Friebe - Wheat Genetic and Genomic Resources Center, Department of Plant Pathology, Throckmorton Plant Sciences Center Kansas State University Manhattan KS 66506-5502 USABikram Gill - Wheat Genetic and Genomic Resources Center, Department of Plant Pathology, Throckmorton Plant Sciences Center Kansas State University Manhattan KS 66506-5502 USAMichael Pumphrey - Spring Wheat Breeding and Genetics, Department of Crop and Soil Sciences Washington State University 291D Johnson Hall Pullman WA 99164-6420 USA
- Publication Details
- Theoretical and applied genetics, Vol.126(5), pp.1167-1177
- Academic Unit
- Crop and Soil Sciences, Department of
- Publisher
- Springer-Verlag; Berlin/Heidelberg
- Identifiers
- 99900548284101842
- Language
- English
- Resource Type
- Journal article