Identification of new sources of resistance to powdery mildew in oat

Okoń, Sylwia; Chrzastek, M.; Kowalczyk, Krzysztof; Koroluk, Aneta

doi:10.1007/s10658-013-0367-4

Cited by 11 publications

(10 citation statements)

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“…Eleven major genes for resistance to powdery mildew in cultivated oats have been catalogued so far (Pm1-Pm11; Hsam et al 2014;Herrmann and Mohler 2018;Ociepa et al 2020), but many more sources, as yet uncharacterized, for resistance to powdery mildew do exist in oat landraces and wild relatives of different ploidy levels (Herrmann and Roderick 1996;Okoń et al 2014Okoń et al , 2016Okoń et al , 2018Okoń and Kowalczyk 2020). Although the access to genes from lower ploidy levels for enhancing cultivated oat germplasm is challenging (e.g., Aung et al 1977Aung et al , 2010Thomas et al 1980), agriculture will finally benefit from this work.…”

Section: Introductionmentioning

confidence: 99%

Allocation of the oat powdery mildew resistance gene Pm3 to oat chromosome 1A

Mohler

2021

CEREAL RESEARCH COMMUNICATIONS

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Besides the mode of inheritance, the knowledge of the chromosome location and allelic relationships are the essentials towards a successful deployment and stacking of divergent disease resistance genes for a given pathogen in breeding programs. Powdery mildew of oats, to which 11 major resistance genes in the host Avena sativa L. have been characterized so far, is a prevalent fungal disease of the crop in Northwestern Europe. In the present study, the resistance gene Pm3 was mapped by linkage analysis relative to molecular markers from oat consensus linkage group Mrg18 which was recently determined to represent oat chromosome 1A. Pm3 was located at 67.7–72.6 cM on Mrg18 of the oat consensus map, a position at which also stem and crown rust resistance genes Pg13 and Pc91 and a large cluster of resistance gene analogs have been previously mapped. The closely linked marker GMI_ES03_c2277_336 was found to be useful for the prediction of Pm3 in gene postulation studies. Although the major effect of the widespread gene got lost over time, the known genome location with associated markers will assist revealing in future genetic studies whether there is a possible residual effect of the gene contributing to adult plant resistance.

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Section: Introductionmentioning

confidence: 99%

Allocation of the oat powdery mildew resistance gene Pm3 to oat chromosome 1A

Mohler

2021

CEREAL RESEARCH COMMUNICATIONS

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“…Genotypes AVE 270, AVE1322 and AVE2804 were also tested in the present work, and two of them (AVE 270 and AVE2804) were susceptible to the applied B. graminis f.sp avenae isolates. Genotype AVE1322 showed resistance to two isolates and moderate resistance to one of them, while in the study by Okoń et al [ 47 ] it was moderately resistant to one isolate used in the tests. These results indicate that this genotype may be of interest in programs aimed at increasing resistance to powdery mildew.…”

Section: Discussionmentioning

confidence: 93%

“…The obtained results allowed for the identification of resistant genotypes; however, none of them were characterized by a broad spectrum of resistance to six different isolates used in the experiment. Okoń et al [ 47 ] analyzed the resistance of selected genotypes of the genus Avena . Among others, they analyzed 11 genotypes of A. fatua .…”

Section: Discussionmentioning

confidence: 99%

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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“…Среди выделившихся форм A. sterilis наиболее интересны образцы CN67383 и CN113536, которые, видимо, имеют новые гены устойчивости [106]. Показано, что образцы тетраплоидных видов A. magna и A. murphyi могут быть эффективными донорами устойчивости к болезни, причем все выделенные формы происходят из стран Средиземноморья (Марокко и Испания) [107,108].…”

Section: гены контролирующиеunclassified

Genetic diversity of cereal crops for powdery mildew resistance

Radchenko

Абдуллаев

Anisimova

2020

Ecological genetics

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Powdery mildew (causal agent Blumeria graminis) is a widespread and harmful fungi disease of cereal crops especially in the regions with humid climate. The pathogen is differentially interacting with plant host genotypes. Growing cereal crop varieties protected with different resistance genes is the most rational, costly and ecologically safe way of combating powdery mildew. The supply of effective genes can be increased due to studies of crop genetic resources collection, introgression of resistance from wild relatives, and also at the expense of mutant forms created with the use of traditional (induced mutagenesis) and biotechnological methods including genome editing. This causes the increasing interest to searching and identifying resistance genes, elucidation of their structural and functional organization, and analysis of molecular mechanisms of the character development. The review summarizes modern information on the identified genes of powdery mildew resistance of the main cereal crops wheat, barley and oat. The list of wheat and barley genes identified at the molecular level is presented. It includes genes encoding NLR and CNL proteins (Pm2, Pm3, Pm8, TaMla2, TaMla3 genes of wheat, barley Mla gene), receptor-like proteins (barley Mlo gene), transport proteins and receptor-like kinases (Lr34, Lr67, Pm21 of wheat).

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Identification of new sources of resistance to powdery mildew in oat

Abstract: Powdery mildew caused by Blumeria graminis DC.

Cited by 11 publications

References 13 publications

Allocation of the oat powdery mildew resistance gene Pm3 to oat chromosome 1A

Allocation of the oat powdery mildew resistance gene Pm3 to oat chromosome 1A

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

Genetic diversity of cereal crops for powdery mildew resistance

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