Abstract
Elymus trachycaulus is a perennial species highly resistant to stripe rust and leaf rust, two devastating diseases of wheat worldwide. The wheat– E. trachycaulus 1H t S·1BL Robertsonian translocation line TA5072 carries the leaf rust resistance gene Lr55 and an undesignated stripe rust resistance gene. In this study, we reduced the length of the 1H t S arm in the 1H t S·1BL centric translocation by homoeologous recombination induced by the Chinese Spring ph1b mutation, resulting in a new translocation line, designated TC282. This line was characterized using newly developed fluorescence in situ hybridization (FISH) probes and molecular markers specific to chromosome 1H t S. TC282 was highly resistant to stripe rust and leaf rust, indicating that the reduced segment of 1H t S still carries both rust resistance loci. Additionally, there is no significant difference in the number of spikelets and tillers of TC282 compared with the wheat variety Jimai 22, suggesting that this translocation line can be used for wheat improvement.
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Claims 7
Claim · model-written summary
Homoeologous recombination produced the reduced alien-chromatin translocation line TC282.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“we reduced the length of the 1H t S arm in the 1H t S·1BL centric translocation by homoeologous recombination induced by the Chinese Spring ph1b mutation, resulting in a new translocation line, designated TC282”
t0“Wheat”
Claim · model-written summary
TC282 was highly resistant to stripe rust.
- Taxon
- Wheat
Triticum aestivumt0 - Material
- TC282e0
- Interactor
- stripe ruste0pathogen
- Outcome
- highly resistant to stripe ruste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“TC282 was highly resistant to stripe rust and leaf rust”
t0“Wheat”
Claim · model-written summary
TC282 was highly resistant to leaf rust.
- Taxon
- WheatTriticum aestivumt0
- Material
- TC282e0
- Interactor
- leaf ruste0pathogen
- Outcome
- highly resistant to stripe rust and leaf ruste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“TC282 was highly resistant to stripe rust and leaf rust”
t0“Wheat”
Claim · model-written summary
The reduced alien segment retained both rust resistance loci.
- Taxon
- WheatTriticum aestivumt0
- Gene
- 1H t Se0
- Outcome
- both rust resistance locie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the reduced segment of 1H t S still carries both rust resistance loci”
t0“Wheat”
Claim · model-written summary
TC282 did not significantly differ from Jimai 22 in spikelet number.
- Taxon
- wheatTriticum aestivume0
- Material
- TC282e0
- Outcome
- number of spikeletse0
- Direction
- no significant differencee0
- Comparator
- Jimai 22e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there is no significant difference in the number of spikelets and tillers of TC282 compared with the wheat variety Jimai 22”
Claim · model-written summary
TC282 did not significantly differ from Jimai 22 in tiller number.
- Taxon
- wheatTriticum aestivume0
- Material
- TC282e0
- Outcome
- tillerse0
- Direction
- no significant differencee0
- Comparator
- Jimai 22e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there is no significant difference in the number of spikelets and tillers of TC282 compared with the wheat variety Jimai 22”
Claim · model-written summary
The authors suggest TC282 for wheat improvement.
- Taxon
- wheatTriticum aestivume0
- Material
- TC282e1
- Outcome
- used for wheat improvemente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this translocation line can be used for wheat improvement”
e1“TC282 was highly resistant to stripe rust and leaf rust”