Varietal resistance and susceptibility of oats to powdery mildew (Erysiphe graminis)

Jones, E. T.; Griffiths, D. J.

doi:10.1016/s0007-1536(52)80008-7

Cited by 17 publications

(3 citation statements)

References 5 publications

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“…The number of studies focusing on this problem with respect to Bga population is very small; moreover, the published data come from the second half of the 20th century. Jones and Griffiths (1952) made the first attempts to characterize oat powdery mildew virulence by examining the resistance level of oat cultivars. Further research regarding pathogenicity by Hayes and Catling (1963) and Hayes and Jones (1966) allowed the identification of five breeds of Bga with different levels of virulence in relation to control forms carrying equal resistance genes for this pathogen.…”

Section: Discussionmentioning

confidence: 99%

Virulence Structure of Blumeria graminis f. sp. avenae Populations in Poland across 2014-2015

et al. 2021

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The purpose of this study was to determine the virulence structure of oat powdery mildew ( Blumeria graminis f. sp. avenae , Bga ) populations in Poland collected in 2014 and 2015. Powdery mildew isolates were collected from 18 locations in Poland. In total, nine lines and cultivars of oat, with different mildew resistance genes, were used to assess virulence of 180 isolates. The results showed that a significant proportion of the Bga isolates found in Poland were virulent to differentials with Pm1 , Pm3 , Pm6 , and Pm3 + Pm8 genes. In contrast Pm4 , Pm5 , Pm2 , and Pm7 genes were classified as resistant to all pathogen isolates used in the experiment. Based on obtained results we can state that there are differences in virulence pattern and diversity parameters between sites and years, but clear trends are not deducible.

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Section: Discussionmentioning

confidence: 99%

Virulence Structure of Blumeria graminis f. sp. avenae Populations in Poland across 2014-2015

et al. 2021

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“…byzantina cv. ‘Red Algerian’ was used as a resistance source in the UK (Jones & Griffiths, ). The recessive resistance gene Pm6 , formerly oat mildew resistance group 1, is derived from A. byzantina cv.…”

Section: Discussionmentioning

confidence: 99%

Locating two novel genes for resistance to powdery mildew from Avena byzantina in the oat genome

Herrmann

Mohler

2018

Plant Breeding

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Powdery mildew of oats is a major threat to intensive oat farming under humid climate, and the use of resistant cultivars is the most environmentally friendly way of achieving safe yields. In this study, the genetic mapping of unexplored resistance genes from Avena byzantina accessions AVE2406 and AVE2925, designated Pm9 and Pm10, is described. Both accessions were crossed with susceptible cultivars, and monogenic segregation was established based on detached leaf segment tests.The two recombinant inbred line (RIL) populations RIL29 (with AVE2925) and RIL24 (with AVE2406) were phenotyped for powdery mildew resistance and genotyped with DArTseq. The genetic map of RIL24 had 2,516 markers in 30 linkage groups with a length of 2,641.5 cM; for RIL29, 921 markers were allocated to 30 linkage groups totalling to 1,378.2 cM. A major resistance QTL in RIL24 harbouring Pm9 was mapped to Mrg21 of the consensus map using BLASTn analysis. For RIL29, a QTL was found on Mrg03. The results support that at least Pm9 is different from the powdery mildew resistance genes mapped so far.

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“…Resistance breeding against PM has been quite successful in Europe over the last 30 years. Many used and unused sources of resistance within the different Avena species have been described by Jones and Griffiths (1951), Hayes and Jones (1966), Hoppe and Kummer (1991), Herrmann and Roderick (1996), Hsam et al (1997Hsam et al ( , 1998, Sánchez-Martín et al (2011), Okoń et al (2014Okoń et al ( , 2016Okoń et al ( , 2018Okoń et al ( , 2021, Okoń and Ociepa (2018) and Okoń and Kowalczyk (2020). So far, 13 BGA resistance genes have been catalogued and genetically mapped in oats (Admassu-Yimer et al, 2022;Herrmann and Mohler, 2018;Hsam et al, 2014;Ociepa et al, 2020;Ociepa and Okón, 2022).…”

Section: Introductionmentioning

confidence: 99%

Genetic mapping of the powdery mildew resistance gene Pm13 on oat chromosome 1D

Schurack,

Beuch,

Cowan

et al. 2024

Preprint

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Powdery mildew, caused by the biotrophic fungus Blumeria graminis DC. f. sp. avenae, is a widespread disease of oats, especially in the temperate regions of Western and Central Europe, and the use of resistant varieties is the most sustainable way to ensure stable yields. Therefore, the identification of robust and effective resistance to powdery mildew is of great interest for oat breeding. In contrast to race-specific resistance genes, adult plant resistance (APR) is generally considered to be more durable. The oat variety Firth, as well as related varieties such as Husky or Flamingstip, contains an unknown APR gene, which was previously located on chromosome 1D using DArT markers. The aim of this study was to confirm and refine the chromosomal location of this resistance gene, tentatively named Pm13. To this end, two independent experiments were carried out using different genetic material under natural infection conditions in the field: genome-wide association mapping (GWAS) in a diverse set of 250 oat lines grown in ten environments and QTL mapping in a HuskyxAVE1284 bi-parental population grown in three environments. Both approaches identified a QTL for powdery mildew resistance on the distal end of chromosome 1D in the hexaploid Sang oat genome. The locus explained up to 15 % of the phenotypic variance in GWAS and 64 % of the phenotypic variance in QTL mapping. Comparison of field data with results from laboratory leaf segment tests confirmed that Pm13 does indeed confer APR. The sequence information of the identified linked markers may allow the development of molecular markers useful for early selection of oat lines with high levels of APR.

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Varietal resistance and susceptibility of oats to powdery mildew (Erysiphe graminis)

Cited by 17 publications

References 5 publications

Virulence Structure of Blumeria graminis f. sp. avenae Populations in Poland across 2014-2015

Virulence Structure of Blumeria graminis f. sp. avenae Populations in Poland across 2014-2015

Locating two novel genes for resistance to powdery mildew from Avena byzantina in the oat genome

Genetic mapping of the powdery mildew resistance gene Pm13 on oat chromosome 1D

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