Transferred to wheat as a translocation on chromosome 6D. Previously known as SrB. Effective against all stem rust pathypes in Australia. The genes has been cloned and available as a non-recombogenic fragment which harbours Sr61 and Sr26
Key Information
Crop
Wheat
Disease resistance(s)
Wheat stem rust
Resistance type
All stage resistance
Source
Thinopyrum ponticum
First reported
Singh RP, McIntosh RA (1987) Genetics and cytogenetics of resistance to Puccinia graminis tritici in three South African wheats. Genome 29:664–670
Chromosomal location
6D
Genomic Sequence
Genbank accession number MN531844.1
Known/other genes in the region
Sr26
Additional Information
Previously known as SrB. Sr61 provides resistance against all Pgt races in Australia but, has been used in varities yet.
Markers
PCR
| Marker Type | Marker Name | Forward Primer | Reverse Primer | Annealing temperature (°C) | Size (bp): Resistant allele/Susceptible allele | Published location |
|---|---|---|---|---|---|---|
| PCR | S61GM | AACCAACAATTCGATGACACAAGG | CGATATCTACGTGCATTTGATTTACG | 62 | 278bp | Zhang, J., Hewitt, T.C., Boshoff, W.H.P. et al. A recombined Sr26 and Sr61 disease resistance gene stack in wheat encodes unrelated NLR genes. Nat Commun 12, 3378 (2021). https://doi.org/10.1038/s41467-021-23738-0 |
SNP-KASP
| Marker Type | Marker Name | Allele 1 Primer (resistant) | Allele 2 Primer (susceptible) | Common Primer | Published location |
|---|---|---|---|---|---|
| SNP-KASP | CsSrB | TCCTTGGCTCTCAGCCGA | TCCTTGGCTCTCAGCCGC | TCAATCTTGAGCTTATGTGC | Mago, R., Zhang, P., Xia, X. et al. Transfer of stem rust resistance gene SrB from Thinopyrum ponticum into wheat and development of a closely linked PCR-based marker. Theor Appl Genet 132, 371–382 (2019). https://doi.org/10.1007/s00122-018-3224-1 |
History
m
mago_rohit@hotmail.com
8 November, 2024
- Updated genomic sequence - genbank accession number mn531844.1