Powdery mildew resistance of Nordic spring wheat cultivars grown in Estonia

Peusha, Hilma; Enno, T.; Jakobson, Irena; mbalova, Jelena Ts; Ingver, Anne; Järve, Kadri

doi:10.1080/09064710701706242

Cited by 8 publications

(9 citation statements)

References 25 publications

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“…The Pm3d allele was detected in the Swedish cultivars ‘Tjalve’ and ‘Zebra’. Identical results were recently reported in a study of wheat cultivars grown in Estonia, by use of the same markers (Peusha et al. 2008).…”

Section: Discussionsupporting

confidence: 86%

“…The Pm3d allele was detected in the Swedish cultivars ÔTjalveÕ and ÔZebraÕ. Identical results were recently reported in a study of wheat cultivars grown in Estonia, by use of the same markers (Peusha et al 2008). ÔZebraÕ could have inherited this allele from ÔRalleÕ, and ÔKolibriÕ is a likely source of Pm3d in ÔTjalveÕ, as both these parental lines are known to carry Pm3d (Heun and Fischbeck 1987).…”

Section: Discussionsupporting

confidence: 77%

“…Until recently Pm3f was considered a rare allele and was not known to have been used in European wheat breeding (Tommasini et al. 2006), but it was recently detected in spring wheat cultivars cultivated in Estonia (‘Satu’, ‘Helle’, ‘Mahti’ and ‘Polkka’) by use of the allele‐specific PCR primers (Peusha et al. 2008).…”

Section: Discussionmentioning

confidence: 99%

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Race specific resistance to powdery mildew in Scandinavian wheat cultivars, breeding lines and introduced genotypes with partial resistance

Lillemo¹,

Skinnes²,

Brown

2010

Plant Breeding

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Powdery mildew, caused by Blumeria graminis f. sp. tritici, is an important bread wheat (Triticum aestivum L.) disease that is favoured by the temperate Scandinavian climate. A total of 38 lines, comprising the current spring and winter wheat cultivars in Norway, various breeding lines and introduced sources of partial resistance were evaluated for race-specific resistance at the seedling stage. Various resistance genes were postulated from the reaction patterns of lines with known genes tested against 20 differential isolates in detached leaf assays. Detection of the Pm8 gene and alleles at the Pm3 locus were further aided by specific PCR primers. The most frequently present resistance genes were Pm8, followed by Pm5a, Pm3d, Pm3f, Pm3b and Pm2. Several lines were susceptible to all isolates at the seedling stage, but were known to possess high levels of partial resistance in the field; these included the German spring wheats ÔNaxosÕ and ÔParosÕ and the Swedish winter wheats ÔFolkeÕ and ÔMjølnerÕ. These lines represent highly valuable sources of partial and potentially durable resistance to powdery mildew.

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Section: Discussionsupporting

confidence: 86%

Section: Discussionsupporting

confidence: 77%

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Race specific resistance to powdery mildew in Scandinavian wheat cultivars, breeding lines and introduced genotypes with partial resistance

Lillemo¹,

Skinnes²,

Brown

2010

Plant Breeding

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“…According to the nucleotide polymorphisms of coding sequences and adjacent untranslated regions of Pm3 resistance alleles, seven allele-specific molecular markers were designed, and successfully discriminated allelic variants at the Pm3 locus (Tommasini et al 2006). These markers were used to identify desirable alleles in the US and European wheat cultivars (Peusha et al 2008;Chen et al 2009;Lillemo et al 2010;Mohler et al 2011), but they are not used in Chinese wheat breeding because all the seven Pm3 alleles are susceptible to the prevalent Chinese Blumeria graminis f. sp. tritici races.…”

Section: Functional Markers For Disease Resistance Genesmentioning

confidence: 99%

“…FMs for Pm3 locus were employed to identify different alleles in the US and European wheat cultivars (Peusha et al 2008;Chen et al 2009;Lillemo et al 2010;Mohler et al 2011).…”

Section: Application Of Functional Markers In Wheat Breedingmentioning

confidence: 99%

Functional markers in wheat: current status and future prospects

et al. 2012

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Functional markers (FM) are developed from sequence polymorphisms present in allelic variants of a functional gene at a locus. FMs accurately discriminate alleles of a targeted gene, and are ideal molecular markers for marker-assisted selection in wheat breeding. In this paper, we summarize FMs developed and used in common wheat. To date, more than 30 wheat loci associated with processing quality, agronomic traits, and disease resistance, have been cloned, and 97 FMs were developed to identify 93 alleles based on the sequences of those genes. A general approach is described for isolation of wheat genes and development of FMs based on in silico cloning and comparative genomics. The divergence of DNA sequences of different alleles that affect gene function is summarized. In addition, 14 molecular markers specific for alien genes introduced from common wheat relatives were also described. This paper provides updated information on all FMs and gene-specific STS markers developed so far in wheat and should facilitate their application in wheat breeding programs.

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Powdery Mildews

Ridout

2009

Encyclopedia of Life Sciences

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Powdery mildews are an important group of parasitic fungi causing disease in over 7600 species of host plants. They are obligate biotrophic parasites, obtaining their nutrients from the host through intracellular feeding structures known as haustoria. Many species of powdery mildews have a high degree of host specialization, infecting only one or a few closely related host genera. Some powdery mildews have well‐documented gene‐for‐gene (GFG) resistance interactions with their host plant, revealing information about the nature of host specificity. This article focuses on the interactions between powdery mildews and the host plant. Events in the establishment of haustoria and biotrophy are reviewed and their influence of infection on host metabolism described. GFG, durable mlo and nonhost‐resistance mechanisms are also described. Key Concepts Importance of powdery mildews : Powdery mildews are extremely successful fungal parasites. Over 700 species have been described infecting over 7600 species of host plants, many of which are important crops species. Chemicals (fungicides) and resistance genes are used against them, but powdery mildews have the ability to rapidly adapt and defeat these control measures. Obligate biotrophy : All powdery mildews are obligate biotrophs, requiring a living host to grow and reproduce. Haustoria : The feeding structures produced by powdery mildews to obtain nutrients from epidermal cells of the host plants. Host specificity : Many powdery mildews have a high degree of host specialization, and can only grow on one or a few closely related plant genera. Infection can even be restricted to single genotypes of a specific host, as typified by gene‐for‐gene (GFG) resistance. GFG resistance : GFG resistance has been extensively investigated in the interaction between barley powdery mildew ( Blumeria graminis f. sp. hordei ) and the host plant, barley. In GFG resistance, an avirulence ( avr ) gene in the parasite matches a resistance ( R ) gene in the host causing a recognition event that triggers defence responses and prevents infection by the parasite. If either the avr gene or the R gene is lacking, the parasite is not recognized and can become established as a parasite. In barley, over 85 powdery mildew R genes have been described, and over 25 avr gene loci have been mapped in Bgh. mlo resistance : A loss‐of‐function mutation in the barley MLO protein results in failure of Bgh to establish a successful infection. mlo resistance has been widely used in barley breeding, and has so far proved to be durable. Nonhost resistance : Plants are resistant to most invading pathogens, a feature described as nonhost resistance (NHR). Only those adapted microbes that are able to overcome this NHR are able to infect and become pathogens. The extreme specificity of some powdery mildew/host interactions has enabled investigation into the basis of NHR. A series of pen Arabidopsis mutants with enhanced penetration by nonadapted Bgh have been defined. Genes coding for pen1‐pen3 have been identified, enabling key proteins required for NHR to be identified.

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Powdery mildew resistance of Nordic spring wheat cultivars grown in Estonia

Cited by 8 publications

References 25 publications

Race specific resistance to powdery mildew in Scandinavian wheat cultivars, breeding lines and introduced genotypes with partial resistance

Race specific resistance to powdery mildew in Scandinavian wheat cultivars, breeding lines and introduced genotypes with partial resistance

Functional markers in wheat: current status and future prospects

Powdery Mildews

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