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Wildermuth, G. B.; Mcnamara, R. B.; Quick, J. S.

doi:10.1023/a:1012947516161

Cited by 42 publications

(7 citation statements)

References 11 publications

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“…Although FCR management in the PNW has focused on cultural practices including time of planting, fertilizer rates, and residue management, host plant resistance has been postulated as the most feasible approach to reducing wheat yield loss due to soil-borne diseases like crown rot (Cook and Veseth 1991; Cook 2001; Paulitz et al 2002; Smiley and Yan 2009). Due to a lack of documented resistance in PNW cultivars, our approach has been to introgress FCR resistance from Australian cultivars, including Gluyas Early, Gala, Kukri, 2-49 and Sunco, into adapted PNW germplasm (Burgess et al 2001; Kammholz et al 2001; Wildermuth et al 2001; Wallwork et al 2004; Bovill et al 2010). The cultivar Sunco, released from the University of Sydney Plant Breeding Institute in 1986, has partial adult plant resistance to FCR (Woolston 2000; Wildermuth et al 2001; Wallwork et al 2004) and has been utilized in crosses with PNW breeding lines to improve resistance.…”

Section: Introductionmentioning

confidence: 99%

“…Due to a lack of documented resistance in PNW cultivars, our approach has been to introgress FCR resistance from Australian cultivars, including Gluyas Early, Gala, Kukri, 2-49 and Sunco, into adapted PNW germplasm (Burgess et al 2001; Kammholz et al 2001; Wildermuth et al 2001; Wallwork et al 2004; Bovill et al 2010). The cultivar Sunco, released from the University of Sydney Plant Breeding Institute in 1986, has partial adult plant resistance to FCR (Woolston 2000; Wildermuth et al 2001; Wallwork et al 2004) and has been utilized in crosses with PNW breeding lines to improve resistance.…”

Section: Introductionmentioning

confidence: 99%

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Identification of quantitative trait loci (QTL) for resistance to Fusarium crown rot (Fusarium pseudograminearum) in multiple assay environments in the Pacific Northwestern US

et al. 2012

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Fusarium crown rot (FCR), caused by Fusarium pseudograminearum and F. culmorum, reduces wheat (Triticum aestivum L.) yields in the Pacific Northwest (PNW) of the US by as much as 35%. Resistance to FCR has not yet been discovered in currently grown PNW wheat cultivars. Several significant quantitative trait loci (QTL) for FCR resistance have been documented on chromosomes 1A, 1D, 2B, 3B, and 4B in resistant Australian cultivars. Our objective was to identify QTL and tightly linked SSR markers for FCR resistance in the partially resistant Australian spring wheat cultivar Sunco using PNW isolates of F. pseudograminerarum in greenhouse and field based screening nurseries. A second objective was to compare heritabilities of FCR resistance in multiple types of disease assaying environments (seedling, terrace, and field) using multiple disease rating methods. Two recombinant inbred line (RIL) mapping populations were derived from crosses between Sunco and PNW spring wheat cultivars Macon and Otis. The Sunco/Macon population comprised 219 F6:F7 lines and the Sunco/Otis population comprised 151 F5:F6 lines. Plants were inoculated with a single PNW F. pseudograminearum isolate (006-13) in growth room (seedling), outdoor terrace (adult) and field (adult) assays conducted from 2008 through 2010. Crown and lower stem tissues of seedling and adult plants were rated for disease severity on several different scales, but mainly on a numeric scale from 0 to 10 where 0 = no discoloration and 10 = severe disease. Significant QTL were identified on chromosomes 2B, 3B, 4B, 4D, and 7A with LOD scores ranging from 3 to 22. The most significant and consistent QTL across screening environments was located on chromosome 3BL, inherited from the PNW cultivars Macon and Otis, with maximum LOD scores of 22 and 9 explaining 36 and 23% of the variation, respectively for the Sunco/Macon and Sunco/Otis populations. The SSR markers Xgwm247 and Xgwm299 flank these QTL and are being validated for use in marker-assisted selection for FCR resistance. This is the first report of QTL associated with FCR resistance in the USElectronic supplementary materialThe online version of this article (doi:10.1007/s00122-012-1818-6) contains supplementary material, which is available to authorized users.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Identification of quantitative trait loci (QTL) for resistance to Fusarium crown rot (Fusarium pseudograminearum) in multiple assay environments in the Pacific Northwestern US

et al. 2012

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“…Breeding for crown rot resistance is difficult due to time-consuming, technically laborious and expensive methods for phenotypic screening (Wildermuth and McNamara 1994;Wildermuth et al 2001) in which disease expression is strongly influenced by environmental factors (Beddis and Burgess 1992). Selection for this trait would be greatly assisted by the development of closely linked molecular markers suitable for deployment in a marker assisted selection (MAS) program.…”

Section: Introductionmentioning

confidence: 99%

Confirmation of QTL mapping and marker validation for partial seedling resistance to crown rot in wheat line '2-49'

Collard

Jolley

Bovill

et al. 2006

Aust. J. Agric. Res.

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Abstract. We have tested the efficacy of putative microsatellite single sequence repeat (SSR) markers, previously identified in a 2-49 (Gluyas Early/Gala) × Janz doubled haploid wheat (Triticum aestivum) population, as being linked to partial seedling resistance to crown rot disease caused by Fusarium pseudograminearum. The quantitative trait loci (QTLs) delineated by these markers have been tested for linkage to resistance in an independent Gluyas Early × Janz doubled haploid population. The presence of a major QTL on chromosome 1DL (QCr.usq-1D1) and a minor QTL on chromosome 2BS (QCr.usq-2B1) was confirmed. However, a putative minor QTL on chromosome 2A was not confirmed. The QTL on 1D was inherited from Gluyas Early, a direct parent of 2-49, whereas the 2B QTL was inherited from Janz. Three other putative QTLs identified in 2-49 × Janz (on 1AL, 4BL, and 7BS) were inherited by 2-49 from Gala and were not able to be confirmed in this study. The screening of SSR markers on a small sample of elite wheat genotypes indicated that not all of the most tightly linked SSR markers flanking the major QTLs on 1D and 1A were polymorphic in all backgrounds, indicating the need for additional flanking markers when backcrossing into some elite pedigrees. Comparison of SSR haplotypes with those of other genotypes exhibiting partial crown rot resistance suggests that additional, novel sources of crown rot resistance are available.

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“…En otro estudio similar, et al (2006) al evaluar diferentes genotipos de trigo en un ensayo en invernadero, contra estas dos especies del hongo, determinaron que los genotipos ʻSuncoʼ, ʻLangʼ, ʻ22397ʼ, ʻRowanʼ, ʻSunstateʼ, ʻBaxerʼ, ʻSunbriʼ y ʻSunvaleʼ fueron los que presentaron el menor índice de severidad de la enfermedad. Wallwork et al (2004) y Wildermuth et al (2001) evaluaron diferentes líneas de trigos harineros, trigos sintéticos y trigos duros confrontados contra F. pseudograminearum.…”

Section: Fuentes Genéticas Para La Mejora De Resistencia En Trigosunclassified

Resistencia a Fusarium causante de pudriciones en trigo: actualidad y perspectivas para su uso en México

Franco

Fuente

Moya

et al. 2020

Remexca

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Las pudriciones de raíz, corona y tallo en trigo se consideran una amenaza seria para este cereal en diversas partes del mundo ya que las pérdidas que ocasionan en el rendimiento y calidad de grano llegan hasta 89% y pueden ser comparables con las causadas por las royas, además de que los hongos asociados a estas pudriciones sintetizan micotoxinas que pueden contaminar productos alimenticios. Esta problemática en México ha sido poco estudiada; sin embargo, en los últimos años, estas enfermedades en trigos de riego y temporal han sido más incidentes lo que está causando preocupación en los productores de este cereal en el país. Esta revisión resume aspectos actuales de la enfermedad, las fuentes de resistencia disponibles a nivel mundial, así como la forma de cómo opera dicha resistencia en el patosistema Fusarium-trigo. Las bases genéticas de la resistencia a pudriciones de raíz, tallo y corona de los trigos hexaploides se ha examinado; a través, del mapeo de Quantitative Trait Loci (QTL). Hasta la fecha, 44 QTL han sido identificados en 14 cromosomas con alelos que inducen la resistencia a esta enfermedad y que derivan de trigos hexaploides y de parientes cercanos. El mejoramiento genético para esta enfermedad mediante la introgresión de los alelos con estos QTL es la estrategia más factible y la piramidación de estos QTL parece ser la estrategia más viable en los programas de mejoramiento genético. Paso importante para el manejo de la problemática en las zonas productores de trigo en México.

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Cited by 42 publications

References 11 publications

Identification of quantitative trait loci (QTL) for resistance to Fusarium crown rot (Fusarium pseudograminearum) in multiple assay environments in the Pacific Northwestern US

Identification of quantitative trait loci (QTL) for resistance to Fusarium crown rot (Fusarium pseudograminearum) in multiple assay environments in the Pacific Northwestern US

Confirmation of QTL mapping and marker validation for partial seedling resistance to crown rot in wheat line '2-49'

Resistencia a Fusarium causante de pudriciones en trigo: actualidad y perspectivas para su uso en México

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