Incidence of crown rust and virulence ofpuccinia coronata cda. f.sp. avenaeeriks. and the effectiveness ofpcgenes for resistance in europe, middle east and north africa: Inzidenz von kronenrost und virulenz vonpuccinia coronata cda. f.sp. avenaeeriks. und die wirksamkeit von pc-genen für resistenz in europa, nahost und nordafrika

Sebesta, J.; Zwatz, B.; Roderick, H. W.; Corazza, L.; Manisterski, J.; Stojanović, Slobodan

doi:10.1080/03235400310001604071

Cited by 18 publications

(4 citation statements)

References 4 publications

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“…Loskutov [49] also drew attention to the fact that effective sources of resistance should be sought among genotypes originating from the area of Avena origin, i.e., the Mediterranean region. This thesis was confirmed by Gnanesh et al [20] and Sebesta et al [50], who identified A. sterils genotypes resistant to crown rust from this region. Okoń et al [51] identified effective sources of resistance to powdery mildew among A. sterilis genotypes from the Mediterranean region.…”

Section: Discussionsupporting

confidence: 73%

Is Every Wild Species a Rich Source of Disease Resistance? Avena fatua L.—Potential Donor of Resistance to Powdery Mildew

Okoń

Ociepa

Nucia

et al. 2021

Plants

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Identifying effective sources of disease resistance is an important aspect of an effective plant protection strategy. Wild species related to cultivars constitute a rich reservoir of resistance genes. Studies conducted in oat have shown that wild species are donors of resistance genes to crown and stem rust, powdery mildew or fusarium head blight. The aim of the present study was to prove whether A. fatua could be a source of effective resistance genes to powdery mildew. This species is widespread all over the world due to its very good adaptability and can be regarded as a potential source of resistance to fungal diseases, including powdery mildew. The conducted research has shown that A. fatua is a species with a low level of resistance to powdery mildew when compared to other wild species of the genus Avena L. A total of 251 accessions were evaluated, and only 23 were identified as resistant to the individual isolates used in the host-pathogen tests. It follows that resistance to powdery mildew is not common among wild Avena species, and its good environmental adaptation is not associated to resistance to powdery mildew.

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Section: Discussionsupporting

confidence: 73%

Is Every Wild Species a Rich Source of Disease Resistance? Avena fatua L.—Potential Donor of Resistance to Powdery Mildew

Okoń

Ociepa

Nucia

et al. 2021

Plants

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“…(Pca), is a serious threat to oats grown in North America [1][2][3][4]. The disease also affects oat production in most oat producing countries [5,6]. Crown rust affects the photosynthetic ability of the plants by the formation of uredinia on leaves and leaf sheaths, thereby reducing grain filling and lowering grain yield [7,8].…”

Section: Introductionmentioning

confidence: 99%

Mapping crown rust resistance in the oat diploid accession PI 258731 (Avena strigosa)

Chowdhury,

Gordon,

Babar

et al. 2024

PLoS ONE

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Oat crown rust, caused by Puccinia coronata Corda f. sp. avenae Eriks. (Pca), is a major biotic impediment to global oat production. Crown rust resistance has been described in oat diploid species A. strigosa accession PI 258731 and resistance from this accession has been successfully introgressed into hexaploid A. sativa germplasm. The current study focuses on 1) mapping the location of QTL containing resistance and evaluating the number of quantitative trait loci (QTL) conditioning resistance in PI 258731; 2) understanding the relationship between the original genomic location in A. strigosa and the location of the introgression in the A. sativa genome; 3) identifying molecular markers tightly linked with PI 258731 resistance loci that could be used for marker assisted selection and detection of this resistance in diverse A. strigosa accessions. To achieve this, A. strigosa accessions, PI 258731 and PI 573582 were crossed to produce 168 F5:6 recombinant inbred lines (RILs) through single seed descent. Parents and RILs were genotyped with the 6K Illumina SNP array which generated 168 segregating SNPs. Seedling reactions to two isolates of Pca (races TTTG, QTRG) were conditioned by two genes (0.6 cM apart) in this population. Linkage mapping placed these two resistant loci to 7.7 (QTRG) to 8 (TTTG) cM region on LG7. Field reaction data was used for QTL analysis and the results of interval mapping (MIM) revealed a major QTL (QPc.FD-AS-AA4) for field resistance. SNP marker assays were developed and tested in 125 diverse A. strigosa accessions that were rated for crown rust resistance in Baton Rouge, LA and Gainesville, FL and as seedlings against races TTTG and QTRG. Our data proposed SNP marker GMI_ES17_c6425_188 as a candidate for use in marker-assisted selection, in addition to the marker GMI_ES02_c37788_255 suggested by Rine’s group, which provides an additional tool in facilitating the utilization of this gene in oat breeding programs.

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“…Moreover, 66% of A. sterilis accessions originate from Israel, a relatively small representative of the species' geographical range. A. sterilis genotypes collected from Israel and other Mediterranean countries were the sources of forty-four crown rust resistance genes [7,[12][13][14][15]. Some of these genes were introduced into North American, European, and Australian oat cultivars.…”

Section: Introductionmentioning

confidence: 99%

“…Some of these genes were introduced into North American, European, and Australian oat cultivars. Accessions originating from Israel provided Pc39, Pc48, Pc58, Pc59, Pc60, and Pc61; accessions from Algeria provided Pc38 and Pc68; and the Pc50 gene donor was from Tunisia [7,[12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Hidden Diversity of Crown Rust Resistance within Genebank Resources of Avena sterilis L.

et al. 2021

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The most widespread and damaging fungal disease of the oat plant is crown rust. Resistance to the crown rust pathogen, Puccinia coronata Cda. f. sp. avenae (Pca), at the seedling stage of Avena sterilis accessions from the Polish national genebank was characterised by five North American and Polish pathotypes of Pca of diverse pathogenicity. Pca pathogenicity was determined on a series of 34 differential lines carrying known seedling resistance genes. Seventy-five percent of studied accessions showed a heterogeneous infection pattern, 17% behaved as homogenous susceptibles, and 7% of tested genotypes could be unambiguously described as resistant. This study proved that A. sterilis accessions preserved in a genebank as complex populations could be a very valuable source of resistance to crown rust. The complexity of analysed populations was ascertained by a detailed variance analysis of transformed resistance/susceptibility data. We demonstrate here that hidden sources of resistance may be discovered in accessions with general susceptibility.

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Cited by 18 publications

References 4 publications

Is Every Wild Species a Rich Source of Disease Resistance? Avena fatua L.—Potential Donor of Resistance to Powdery Mildew

Is Every Wild Species a Rich Source of Disease Resistance? Avena fatua L.—Potential Donor of Resistance to Powdery Mildew

Mapping crown rust resistance in the oat diploid accession PI 258731 (Avena strigosa)

Hidden Diversity of Crown Rust Resistance within Genebank Resources of Avena sterilis L.

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