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Ascospores as primary inoculum for epidemics of white leaf spot (Mycosphaerella capsellae) in winter oilseed rape in the UK


, : Ascospores as primary inoculum for epidemics of white leaf spot (Mycosphaerella capsellae) in winter oilseed rape in the UK. Plant Pathology 48(3): 308-319

In the UK, conidia of Pseudocercosporella capsellae, the anamorph of M. capsellae, were observed on white leaf spot lesions on rape leaves throughout the growing season.

Accession: 003046787

DOI: 10.1046/j.1365-3059.1999.00350.x

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Related references

Inman, A.J.; Sivanesan, A.; Fitt, B.D.L.; Evans, R.L., 1991: The biology of Mycosphaerella capsellae sp. nov., the teleomorph of Pseudocercosporella capsellae, cause of white leaf spot of oilseed rape. M. capsellae sp. nov. is reported as the teleomorph of P. capsellae. Spermogonia and protoascomata were observed in white leaf spot lesions on oilseed rape pods in Jun. 1990. Ascomata were mature by Oct. and ascospores were dispersed in response t...

Inman A.J.; Sivanesan A.; Fitt B.D.L.; Evans R.L., 1991: The biology of mycosphaerella capsellae new species the teleomorph of pseudocercosporella capsellae cause of white leaf spot of oilseed rape. Mycosphaerella capsellae sp. nov. is reported as the teleomorph of Pseudoceresporella capsellae, the cause of white leaf spot on oilseed rape and other crucifers. Spermogonia and protoascomata were observed in white leaf spot lesions on oilseed ra...

Inman, A.J.; Fitt, B.D.L.; Evans, R.L., 1992: Epidemiology in relation to control of white leaf spot (Mycosphaerella capsellae) on oilseed rape. Evidence is presented that airborne ascospores of M. capsellae in the autumn are responsible for initiating epidemics of white leaf spot in winter oilseed rape in the UK. Subsequent disease spread and development is by splash-dispersed conidia. Da...

Inman, A.J.; Fitt, B.D.L.; Welham, S.J.; Evans, R.L.; Murray, D.A., 1997: Effects of temperature, cultivar and isolate on the incubation period of white leaf spot (Mycosphaerella capsellae) on oilseed rape (Brassica napus). When leaves of oilseed rape (cv. Cobra) were inoculated with conidial suspensions of M. capsellae (white leaf spot) and incubated in controlled environments, the lag period from inoculation to the appearance of the first lesions decreased, and the...

Gilles, T.; Fitt, B.D.L.; McCartney, H.A.; Papastamati, K.; Steed, J.M., 2001: The roles of ascospores and conidia of Pyrenopeziza brassicae in light leaf spot epidemics on winter oilseed rape (Brassica napus) in the UK. Ascospores of Pyrenopeziza brassicae were produced in apothecia (cup-shaped ascomata) on oilseed rape debris. The conidia, which were morphologically identical to the ascospores, were produced in acervular conidiomata on the surface of living oils...

Fitt, B.; Dhua, U.L.cey, M.; Mccartney, H., 1989: Effects of leaf age and position on splash dispersal of Pseudocercosporella capsellae, cause of white leaf spot on oilseed rape. Aspects of applied biology 3) 457-464

Papastamati, K.; Van-Den-Bosch, F.; Welham, S.J.; Fitt, B.D.L.; Evans, N.; Steed, J.M., 2002: Modelling the daily progress of light leaf spot epidemics on winter oilseed rape (Brassica napus), in relation to Pyrenopeziza brassicae inoculum concentrations and weather factors. The progress of light leaf spot (Pyrenopeziza brassicae) epidemics on winter oilseed rape was monitored in 1998/99 and 1999/2000 at Rothamsted, and weather factors and P. brassicae ascospore concentrations were recorded daily. The data sets, which...

Fitt B.D.L.; Inman A.J.; Lacey M.E.; Mccartney H.A., 1992: Splash dispersal of spores of pseudocercosporella capsellae white leaf spot from oilseed rape leaves of different inclination flexibility and age. Spore dispersal gradients were fitted well by exponential models in three experiments when simulated rain fell on to oilseed rape leaves infected by Pseudocercosporella capsellae (white leaf spot). Regressions of number (ln) of spores on distance...

Amelung, D.; Daebeler, F., 1988: White leaf spot (Pseudocercosporella capsellae (Ell. et Ev.) Deighton), a disease of winter rape new to the GDR. The first occurrence of P. capsellae on rape in the GDR (autumn 1986) is reported. Symptoms, morphology and nomenclature of the pathogen, transmission, host range, geographical distribution, environmental conditions favouring infection and control...

Sutherland, K.G.; Fitt, B.D.L.; Steed, J.M.; Welham, S.J.; Gladders, P.; Turner, J.A., 1998: Development and control of light leaf spot (Pyrenopeziza brassicae) epidemics in winter oilseed rape in the UK. Field trials were conducted to investigate the development and control of light leaf spot (Pyrenopeziza brassicae) epidemics in winter oilseed rape in different parts of the UK. Oilseed rape debris was applied to crops at Boxworth and Rothamsted,...