QTL characterization of resistance to leaf rust and stripe rust in the spring wheat line Francolin#1

Lan, Caixia; Rosewarne, Garry M.; Singh, Ravi P.; Herrera-Foessel, Sybil A.; Espino, Julio Huerta; Basnet, Bhoja R.; Zhang, Yelun; Yang, Ennian

doi:10.1007/s11032-014-0075-6

Cited by 101 publications

(76 citation statements)

References 53 publications

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“…3). Moreover, the peak marker of our QTL IWA8581 co-segregated with csLV46G22, which has been reported to be in close linkage with Yr29 in several studies (Kolmer et al, 2012;Rosewarne et al, 2012;Lan et al, 2014;Calvo-Salazar et al, 2015;Ren et al, 2017;Dong et al, 2017;Ponce-Molina et al, 2018). Moreover, the peak marker of our QTL IWA8581 co-segregated with csLV46G22, which has been reported to be in close linkage with Yr29 in several studies (Kolmer et al, 2012;Rosewarne et al, 2012;Lan et al, 2014;Calvo-Salazar et al, 2015;Ren et al, 2017;Dong et al, 2017;Ponce-Molina et al, 2018).…”

Section: Qyrucw-1blsupporting

confidence: 60%

“…Several named Pst resistance genes, including Yr27, Yr31, Yr41, YrC51-YrP81, YrF, YrH9014, and YrKK, have been mapped on the short arm of chromosome 2B Lan et al, 2014;Maccaferri et al, 2015;Wu et al, 2017). Most of these genes confer all-stage, race-specific resistance and have been defeated by Chinese Pst races (Wu et al, 2017).…”

Section: Qyrucw-2bsmentioning

confidence: 99%

“…First, RILs carrying only QYr. Allelism tests will be required to determine if QYr.ucw-2BS is different from the overlapping YrF (from Francolin#1; Lan et al, 2014) and YrH9014 (from Psathyrotachys huashanica translocation line H9014-14-4-6-1; Ma et al, 2013) (Fig. In addition, in 2013 and 2017, when races virulent against Yr27 were detected in the field at relatively high frequency (70 and 54%, respectively, Supplemental Table S1), QYr.…”

Section: Qyrucw-2bsmentioning

confidence: 99%

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Mapping QTL for Resistance to New Virulent Races of Wheat Stripe Rust from Two Argentinean Wheat Cultivars

et al. 2018

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During the last two decades, new virulent and aggressive races of Puccinia striiformis Westend. f. sp. tritici (Pst) have spread worldwide, causing devastating epidemics and prompting the search for new sources of resistance in wheat (Triticum aestivum L.). Between 2012 and 2017, we mapped four stripe rust resistance quantitative trait loci (QTL) effective against the Pst races present in California, USA, using recombinant inbred lines (RILs) developed from the cross between the Argentinean cultivars ‘Klein Proteo’ and ‘Klein Chajá’. The RIL population showed transgressive segregation in all six growing seasons relative to the parental lines, which showed moderate levels of Pst resistance. Analyses by year detected QTL conferring adult plant resistance on chromosomes 1BL, 2BS, 3D centromeric (from Klein Chajá), and 4DL (from Klein Proteo). QYr.ucw‐1BL, mapped in the Yr29 resistance gene region, was significant in all seasons (P < 0.01) and explained on average 31.0 to 32.8% of the observed variation. QYr.ucw‐2BS showed a stronger effect than QYr.ucw‐1BL in 2013 but was ineffective in 2014 and 2016. This QTL also conferred seedling resistance, suggesting that it is an all‐stage resistance gene. Centromeric QYr.ucw‐3D and QYr.ucw‐4DL showed smaller effects than the previous QTL and were significant only in some of the experiments. No significant interactions were detected among QTL, indicating the absence of digenic epistatic effects. The molecular markers identified in this study can be used to combine these genes and accelerate their deployment in wheat breeding programs.

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Section: Qyrucw-1blsupporting

confidence: 60%

Section: Qyrucw-2bsmentioning

confidence: 99%

Section: Qyrucw-2bsmentioning

confidence: 99%

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Mapping QTL for Resistance to New Virulent Races of Wheat Stripe Rust from Two Argentinean Wheat Cultivars

et al. 2018

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“…These includes Yr29 (Rosewarne et al., 2012), YrExp1 (Lin & Chen, 2007), QYr . cim ‐ 1BL _ Francolin (Lan et al., 2014), QYr.tam‐1B_Quaiu (Basnet et al., 2014), QYr‐1B_Saar (Lillemo et al., 2008), QYr.sun‐1B_Wollaroi (Bansal, Kazi, Singh, Hare, & Bariana, 2014), QYr.sun‐1B_Kukri (Bariana et al., 2010), and QYr_Pavon76 (William, Singh, Huerta‐Espino, Palacios, & Suenaga, 2006). Additional research is needed to fully characterize chromosome 1B resistance and determine if IWA6831 is related to one of the previously mapped stripe rust resistance genes or QTLs.…”

Section: Discussionmentioning

confidence: 99%

Genome‐wide mapping of resistance to stripe rust caused by Puccinia striiformis f. sp. tritici in hexaploid winter wheat

2020

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Stripe rust, caused by the fungus Puccinia striiformis f. sp. tritici (Pst), is a widespread disease and major limit to wheat (Triticum aestivum L.) production worldwide. The USDA‐ARS National Small Grains Germplasm Collection has proven to be a rich source of genetic diversity to improve stripe rust resistance in wheat breeding programs. The objective of the present study was to investigate the genetic diversity and sources of resistance to stripe rust in 441 accessions from the collection representing globally sourced winter wheat germplasm, as a complement to a previous study. A genome‐wide association study was conducted to identify loci conferring resistance to Pst based on phenotypic data from four field experiments and greenhouse seedling resistance screening against three races of the pathogen. A total of 5831 single nucleotide polymorphism markers were used to investigate population structure, linkage disequilibrium, and marker–trait associations. Our results showed 12 and 7 genomic regions significantly associated with Pst resistance based on field adult‐plant and greenhouse seedling responses, respectively, at a false discovery rate adjusted P value of <0.1. Four of the significantly associated genomic regions were mapped far from previously identified Pst resistance genes and quantitative trait loci, indicating that they represent potentially new Pst resistance loci. The present study provides additional insight into the usefulness of wheat germplasm collections as an important resistance source that can be used to incorporate diverse resistance genes into adapted wheat cultivars. Further work should aim to validate the identified genomic regions and the associated molecular markers to enhance their utility in marker‐assisted breeding.

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“…The remaining lines were resistant at the seedling stage and remained so throughout the life of the plant, as assessed under field conditions. The latter loci have been characterized to carry pleiotropic APR genes (Fu et al, 2009;Herrera-Foessel et al, 2010;Lan et al, 2014;Yang et al, 2013). The presence of APR, despite the lack of seedling resistance, is likely to be conferred by minoreffect genes.…”

Section: Discussionmentioning

confidence: 99%

Seedling and Adult Plant Stripe Rust Resistance in Diverse Wheat–Alien Introgression Lines

Rahmatov

Hovmøller

Nazari³

et al. 2017

Crop Science

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Stripe rust, caused by Puccinia striiformis Westend. f. sp. tritici Eriks., is an important foliar disease of wheat (Triticum aestivum L.) worldwide. The use of genetic diversity, particularly from wild relatives, has made a significant contribution to improving wheat productivity. To identify new sources of seedling and adult plant resistance, we evaluated 263 wheat–alien introgression derivatives from Secale cereale L., Leymus mollis (Trin.) Plig., Leymus racemosus (Lam.) Tzevlev, and Thinopyrum junceiforme (Á.Löve & D.Löve) Á. Löve. Three resistance genes, Yr1+, Yr2+, and Yr9+ were postulated to be present in 7, 19, and 12% of wheat–alien introgression lines, respectively. In addition, the results suggested the gene combinations of Yr1–Yr2 (1%), Yr1–Yr32 (2%), Yr2–Yr9 (5.4%), Yr1–Yr2–Yr32 (11%), and the additional unknown resistance gene(s) being present in these materials in the respective percentages. The molecular markers Xwmc364 for Yr2 (36%), Xscm9 and Xiag95 for Yr9 (17%), and Xwmc198 for Yr32 (13%) were used to validate the presence of these Yr genes. Ninety‐eight (37%) of the lines possess unknown resistance genes that could not be determined with the isolates used in this study and six (2.3%) of the lines showed seedling resistance to all isolates. The lines with the putative new resistance gene(s) will be crossed to the adapted genotypes to develop a mapping population for determining the underlying genetic basis of resistance. If these resistance genes are validated as being new, they will enhance the genetic diversity for stripe rust resistance in wheat.

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QTL characterization of resistance to leaf rust and stripe rust in the spring wheat line Francolin#1

Cited by 101 publications

References 53 publications

Mapping QTL for Resistance to New Virulent Races of Wheat Stripe Rust from Two Argentinean Wheat Cultivars

Mapping QTL for Resistance to New Virulent Races of Wheat Stripe Rust from Two Argentinean Wheat Cultivars

Genome‐wide mapping of resistance to stripe rust caused by Puccinia striiformis f. sp. tritici in hexaploid winter wheat

Seedling and Adult Plant Stripe Rust Resistance in Diverse Wheat–Alien Introgression Lines

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