Occurrence, role and pathogenic traits of a distinct pathotype of Pseudocercosporella herpotrichoides

Cunningham, P. C.

doi:10.1016/s0007-1536(81)80002-2

Cited by 25 publications

(7 citation statements)

References 12 publications

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“…These results support the hypothesis that genetic control of resistance to O. yallundae and O. acuformis is different in some lines. Uslu ) were more virulent to wheat than to rye, whereas Rtype isolates (O. acuformis) were almost equally virulent to both rye and wheat (12). Although these pathogens coexist in the same fields and cause similar symptoms, their infection processes are slightly different.…”

Section: Discussionmentioning

confidence: 93%

Identifying New Sources of Resistance to Eyespot of Wheat in Aegilops longissima

Sheng

Murray

2013

Plant Disease

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Section: Discussionmentioning

confidence: 93%

Identifying New Sources of Resistance to Eyespot of Wheat in Aegilops longissima

Sheng

Murray

2013

Plant Disease

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“…(Fitt et al 1988), rye and perennial grasses (Cunningham 1981) in temperate regions, causing up to 50% yield losses (Fitt et al 1988). In Finland this disease was frequently found in spring wheat throughout the country in 1946-1953(Hårdh 1953.…”

Section: Examples Of Possible Increased Plant Disease Risksmentioning

confidence: 99%

Pests and diseases in a changing climate a major challenge for Finnish crop production

Hakala¹,

Hannukkala²,

Huusela-Veistola³

2008

AFSci

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A longer growing season and higher accumulated effective temperature sum (ETS) will improve crop production potential in Finland. The production potential of new or at present underutilised crops (e.g. maize (Zea mays L.), oilseed rape (Brassica napus L.), lucerne (Medicago sativa L.)) will improve and it will be possible to grow more productive varieties of the currently grown crops (spring wheat (Triticum aestivum L.), barley (Hordeum vulgare L.), oats (Avena sativa L.)). Also cultivation of autumn sown crops could increase if winters become milder and shorter, promoting overwintering success. Climatic conditions may on the other hand become restrictive in many ways. For example, early season droughts could intensify because of higher temperatures and consequent higher evaporation rates. Current low winter temperatures and short growing season help restrict the development and spread of pests and pathogens, but this could change in the future. Longer growing seasons, warmer autumns and milder winters may initiate new problems with higher occurrences of weeds, pests and pathogens, including new types of viruses and virus vectors. Anoxia of overwintering crops caused by ice encasement, and physical damage caused by freezing and melting of water over the fields may also increase. In this study we identify the most likely changes in crop species and varieties in Finland and the pest and pathogen species that are most likely to create production problems as a result of climate change during this century.

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“…Two additional pathotypes have been described amongst isolates which conform, morphologically, to W-type isolates. One, termed C-type (Cunningham, 1965(Cunningham, , 1981, is pathogenic on wheat, Aegilops squarrosa and Elymus repens (formerly Agropyron repens) and the second, termed S-type, is pathogenic on wheat and A. squarrosa (Scott et al, 1976;Scott & Hollins, 1980). The W-and R-type groupings have also been differentiated on the basis of polymorphisms of nuclear DNA (Thomas et al, 1992), mitochondrial DNA (Nicholson et al, 1993;Takeuchi & Kuninaga, 1996), random amplified polymorphic DNA (RAPD) markers (Nicholson & Rezanoor, 1994), ribosomal ITS region sequences (Poupard et al, 1993) and isozymes (Julian & Lucas, 1990).…”

Section: Introductionmentioning

confidence: 99%

Differentiation and quantification of the cereal eyespot fungi Tapesia yallundae and Tapesia acuformis using a PCR assay

et al. 1997

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Isolates of Tapesia yallundae and Tapesia acuformis were subjected to Random Amplified Polymorphic DNA (RAPD) assay. Amplification products common to isolates of either species were cloned and primers were generated from each sequence for use in conventional PCR. The primer pair derived from a T. yallundae specific RAPD marker amplified a product only from DNA of T. yallundae isolates and not from DNA of a range of other fungal species associated with the stem base disease complex of cereals. Similarly, the primer pair generated from a T. acuformis-specific RAPD marker amplifed a product only from DNA of T. acuformis isolates. Quantitative assays were developed for both species of Tapesia from these primer pairs, using competitive PCR. Competitive PCR was used to determine the level of colonization of seedlings by each species in glasshouse-and field-inoculated cereal hosts and results compared to those for conventional seedling disease assessment.

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Occurrence, role and pathogenic traits of a distinct pathotype of Pseudocercosporella herpotrichoides

Cited by 25 publications

References 12 publications

Identifying New Sources of Resistance to Eyespot of Wheat in Aegilops longissima

Identifying New Sources of Resistance to Eyespot of Wheat in Aegilops longissima

Pests and diseases in a changing climate a major challenge for Finnish crop production

Differentiation and quantification of the cereal eyespot fungi Tapesia yallundae and Tapesia acuformis using a PCR assay

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