Genome-Wide Mapping of Adult Plant Resistance to Leaf Rust and Stripe Rust in CIMMYT Wheat Line Arableu#1

Leaf (brown) rust (LR) and stripe (yellow) rust (YR), caused by Puccinia triticina and P. striiformis f. sp. tritici, respectively, significantly reduce wheat production worldwide. Disease-resistant wheat varieties offer farmers one of the most effective ways to manage these diseases. The common whe...

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Veröffentlicht in:Plant disease. - 1997. - 104(2020), 5 vom: 02. Mai, Seite 1455-1464
1. Verfasser: Yuan, Chan (VerfasserIn)
Weitere Verfasser: Singh, Ravi P, Liu, Demei, Randhawa, Mandeep S, Huerta-Espino, Julio, Lan, Caixia
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2020
Zugriff auf das übergeordnete Werk:Plant disease
Schlagworte:Journal Article adult plant resistance genome-wide mapping leaf rust quantitative trait loci stripe rust wheat wheat rust
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520 |a Leaf (brown) rust (LR) and stripe (yellow) rust (YR), caused by Puccinia triticina and P. striiformis f. sp. tritici, respectively, significantly reduce wheat production worldwide. Disease-resistant wheat varieties offer farmers one of the most effective ways to manage these diseases. The common wheat (Triticum aestivum L.) Arableu#1, developed by the International Maize and Wheat Improvement Center and released as Deka in Ethiopia, shows susceptibility to both LR and YR at the seedling stage but a high level of adult plant resistance (APR) to the diseases in the field. We used 142 F5 recombinant inbred lines (RILs) derived from Apav#1 × Arableu#1 to identify quantitative trait loci (QTLs) for APR to LR and YR. A total of 4,298 genotyping-by-sequencing markers were used to construct a genetic linkage map. The study identified four LR resistance QTLs and six YR resistance QTLs in the population. Among these, QLr.cim-1BL.1/QYr.cim-1BL.1 was located in the same location as Lr46/Yr29, a known pleiotropic resistance gene. QLr.cim-1BL.2 and QYr.cim-1BL.2 were also located on wheat chromosome 1BL at 37 cM from Lr46/Yr29 and may represent a new segment for pleiotropic resistance to both rusts. QLr.cim-7BL is likely Lr68 given its association with the tightly linked molecular marker cs7BLNLRR. In addition, QLr.cim-3DS, QYr.cim-2AL, QYr.cim-4BL, QYr.cim-5AL, and QYr.cim-7DS are probably new resistance loci based on comparisons with published QTLs for resistance to LR and YR. Our results showed the diversity of minor resistance QTLs in Arableu#1 and their role in conferring near-immune levels of APR to both LR and YR, when combined with the pleiotropic APR gene Lr46/Yr29 
650 4 |a Journal Article 
650 4 |a adult plant resistance 
650 4 |a genome-wide mapping 
650 4 |a leaf rust 
650 4 |a quantitative trait loci 
650 4 |a stripe rust 
650 4 |a wheat 
650 4 |a wheat rust 
700 1 |a Singh, Ravi P  |e verfasserin  |4 aut 
700 1 |a Liu, Demei  |e verfasserin  |4 aut 
700 1 |a Randhawa, Mandeep S  |e verfasserin  |4 aut 
700 1 |a Huerta-Espino, Julio  |e verfasserin  |4 aut 
700 1 |a Lan, Caixia  |e verfasserin  |4 aut 
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773 1 8 |g volume:104  |g year:2020  |g number:5  |g day:02  |g month:05  |g pages:1455-1464 
856 4 0 |u http://dx.doi.org/10.1094/PDIS-10-19-2198-RE  |3 Volltext 
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