Abstract
The rust diseases of wheat pose a constant threat to sustainable wheat production and thus food security in Asia. If susceptible wheat cultivars are grown, approximately 60 and 40 million hectares could experience periodic epidemics of leaf rust and stripe rust, respectively. Avoiding major rust epidemics in the region is a complex challenge, given that fewer cultivars are being cultivated over large areas, that several of those cultivars are protected by the same resistance genes, and that there is free movement of new virulent races in most of west and south Asia. Monitoring the evolution and movement of new rust races and diversifying cultivars sown in the region based on genetic information could help reduce losses, provided newly susceptible cultivars are withdrawn quickly. Using race-specific resistance genes in combinations could enhance their longevity. Linked DNA markers show promise for achieving such combinations; however, a national and regional deployment strategy is necessary to achieve long-term success. The most promising long-term control strategy is to breed and deploy cultivars carrying durable resistance based on minor, slow rusting genes with additive effects. CIMMYT studies show that combining 4-5 such genes results in a high level of resistance, comparable to immunity. Traditional genetic and molecular mapping studies have demonstrated high genetic diversity for such minor genes, but significant
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Claims 9
Claim · model-written summary
The review estimates that susceptible wheat cultivars could face periodic leaf rust epidemics across about 60 million hectares.
- Taxon
- wheat
Triticum aestivume0 - Material
- susceptible wheat cultivarse0
- Outcome
- epidemics of leaf ruste0
- Direction
- could experiencee0
- Value
- 60e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“If susceptible wheat cultivars are grown, approximately 60 and 40 million hectares could experience periodic epidemics of leaf rust and stripe rust, respectively.”
Claim · model-written summary
The review estimates that susceptible wheat cultivars could face periodic stripe rust epidemics across about 40 million hectares.
- Taxon
- wheatTriticum aestivume0
- Material
- susceptible wheat cultivarse0
- Outcome
- epidemics of leaf rust and stripe ruste0
- Direction
- could experiencee0
- Value
- 40 million hectarese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“If susceptible wheat cultivars are grown, approximately 60 and 40 million hectares could experience periodic epidemics of leaf rust and stripe rust, respectively.”
Claim · model-written summary
Monitoring rust races and diversifying cultivars by genetic information could reduce wheat losses if newly susceptible cultivars are withdrawn quickly.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- reduce lossese0
- Qualifier
- provided newly susceptible cultivars are withdrawn quicklye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Monitoring the evolution and movement of new rust races and diversifying cultivars sown in the region based on genetic information could help reduce losses, provided newly susceptible cultivars are withdrawn quickly.”
t0“Wheat Rust in Asia”
Claim · model-written summary
Combining race-specific resistance genes could enhance their longevity.
- Taxon
- WheatTriticum aestivumt0
- Gene
- race-specific resistance genese0
- Outcome
- enhance their longevitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Using race-specific resistance genes in combinations could enhance their longevity.”
t0“Wheat Rust in Asia”
Claim · model-written summary
Linked DNA markers show promise for combining race-specific resistance genes.
- Taxon
- WheatTriticum aestivumt0
- Gene
- DNA markerse0
- Outcome
- achieving such combinationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Linked DNA markers show promise for achieving such combinations; however, a national and regional deployment strategy is necessary to achieve long-term success.”
t0“Wheat Rust in Asia”
Claim · model-written summary
The review recommends a national and regional deployment strategy for long-term resistance success.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- deployment strategye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a national and regional deployment strategy is necessary to achieve long-term success”
t0“Wheat Rust in Asia”
Claim · model-written summary
The review recommends breeding cultivars with durable resistance from additive minor, slow rusting genes.
- Taxon
- WheatTriticum aestivumt0
- Gene
- minor, slow rusting genese0
- Outcome
- breed and deploy cultivars carrying durable resistancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The most promising long-term control strategy is to breed and deploy cultivars carrying durable resistance based on minor, slow rusting genes with additive effects.”
t0“Wheat Rust in Asia”
Claim · model-written summary
CIMMYT studies report that combining four to five minor genes gives resistance comparable to immunity.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CIMMYT studies show that combining 4-5 such genes results in a high level of resistance, comparable to immunity.”
t0“Wheat Rust in Asia”
Claim · model-written summary
Mapping studies demonstrated high genetic diversity for minor rust resistance genes.
- Taxon
- WheatTriticum aestivumt0
- Gene
- minor genese0
- Outcome
- genetic diversitye0
- Direction
- highe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Traditional genetic and molecular mapping studies have demonstrated high genetic diversity for such minor genes”
t0“Wheat Rust in Asia”