First report of apothecia of <i>Tapesia yallundae</i> occurring on the wild grass <i>Holcus lanatus</i> (Yorkshire Fog) in New Zealand

Dyer, Paul S.; Bradshaw, Rosie E.

doi:10.1046/j.1365-3059.2002.00774.x

Cited by 4 publications

(2 citation statements)

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“…Furthermore, these data suggest that ryegrasses could potentially be a reservoir of R. commune inoculum able to initiate barley leaf blotch epidemics. Similar roles for wild grasses as potential sources of inoculum have been suggested previously for the wheat pathogens Pyrenophora tritici-repentis (cause of tan spot), Oculimacula yallundae (synonym Tapesia yallundae , cause of eyespot) and Colletotrichum species (cause of anthracnose disease) [41], [42], [39]. Further work is now required to investigate the worldwide frequency and distribution of R. commune on ryegrass species.…”

Section: Discussionmentioning

confidence: 67%

Evolutionary Relationships between Rhynchosporium lolii sp. nov. and Other Rhynchosporium Species on Grasses

et al. 2013

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The fungal genus Rhynchosporium (causative agent of leaf blotch) contains several host-specialised species, including R. commune (colonising barley and brome-grass), R. agropyri (couch-grass), R. secalis (rye and triticale) and the more distantly related R. orthosporum (cocksfoot). This study used molecular fingerprinting, multilocus DNA sequence data, conidial morphology, host range tests and scanning electron microscopy to investigate the relationship between Rhynchosporium species on ryegrasses, both economically important forage grasses and common wild grasses in many cereal growing areas, and other plant species. Two different types of Rhynchosporium were found on ryegrasses in the UK. Firstly, there were isolates of R. commune that were pathogenic to both barley and Italian ryegrass. Secondly, there were isolates of a new species, here named R. lolii, that were pathogenic only to ryegrass species. R. lolii was most closely related to R. orthosporum, but exhibited clear molecular, morphological and host range differences. The species was estimated to have diverged from R. orthosporum ca. 5735 years before the present. The colonisation strategy of all of the different Rhynchosporium species involved extensive hyphal growth in the sub-cuticular regions of the leaves. Finally, new species-specific PCR diagnostic tests were developed that could distinguish between these five closely related Rhynchosporium species.

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Section: Discussionmentioning

confidence: 67%

Evolutionary Relationships between Rhynchosporium lolii sp. nov. and Other Rhynchosporium Species on Grasses

et al. 2013

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“…Sexual reproduction of O. yallundae can occur on some wild grasses [e.g. Bromus diandrus , Hordeum leporinum (Wallwork 1987) or Holcus lanatus (Dyer and Bradshaw 2002)], which may provide a reservoir of primary inoculum to infect cultivated fields. Significant damages due to eyespot are observed on winter wheat and fall‐sown spring wheat in temperate regions of the world with cool and wet climates where fall‐sown cereals predominate (Lucas et al.…”

Section: Introductionmentioning

confidence: 99%

Advances and Prospects in Wheat Eyespot Research: Contributions from Genetics and Molecular Tools

Wei

Muranty

Zhang

2011

Journal of Phytopathology

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Eyespot disease caused by the soil-borne facultative fungi Oculimacula yallundae and O. acuformis is the major component of the stem-base disease complex of wheat in temperate regions of the world with a cool and wet climate. In this review, we focus on results of genetic studies concerning both partners of the host-pathogen interaction. This comprises analyses of genetic diversity of the pathogen and identification of particular genes within it, evaluation and screening methods for host resistance, resistance sources and genetics of these resistances, breeding of resistant cultivars in wheat, and application of genetic markers in tagging and tracking of eyespot resistance genes. We also attempt to foresee some of the key issues and developments that may occur in future. The identification of markers tightly linked to eyespot resistance genes is the important research focus opening the door to marker-assisted selection of resistant varieties.

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Oculimacula yallundae (eyespot)

2022

CABI Compendium

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First report of apothecia of Tapesia yallundae occurring on the wild grass Holcus lanatus (Yorkshire Fog) in New Zealand

Cited by 4 publications

References 5 publications

Evolutionary Relationships between Rhynchosporium lolii sp. nov. and Other Rhynchosporium Species on Grasses

Evolutionary Relationships between Rhynchosporium lolii sp. nov. and Other Rhynchosporium Species on Grasses

Advances and Prospects in Wheat Eyespot Research: Contributions from Genetics and Molecular Tools

Oculimacula yallundae (eyespot)

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