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Browsing by Author "Lucas, J. A."
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Analyses of air samples for ascospores of Leptosphaeria maculans and L.biglobosa by light microscopy and molecular techniques
Kaczmarek, J.; Jedryczka, M.; Fitt, Bruce D.L.; Lucas, J. A.; Latunde-Dada, A. O. (2009)Spores of many fungal pathogens are dispersed by wind. Detection of these airborne inocula is important in forecasting both the onset and the risk of epiphytotics. Species-specific primers targeted at the internal transcribed ... -
Asymptomatic infection of winter and spring barley by Rhynchosporium secalis: effects and implications for epidemiology and host resistance
Atkins, Simon D.; Stonard, J. F.; Fraaije, B. A.; Lucas, J. A.; Fitt, Bruce D.L.; Newton, A. C. (ICARDA, 2010) -
Comparative analyses of the abundance of Leptosphaeria maculans and L. biglobosa ascospores in air samples using traditional PCR and Real-Time PCR
Kaczmarek, J.; Jedryczka, M.; Irzykowski, W.; Fitt, Bruce D.L.; Lucas, J. A.; Latunde-Dada, A. O. (Institute of Plant genetics PAS in Poznan, 2009) -
The dynamics of Rhynchosporium secalis in winter and spring barley and the role of inoculum sources
Atkins, Simon D.; Fraaije, B. A.; Lucas, J. A.; Fitt, Bruce D.L. (2008-08) -
Germination of Alternaria linicola conidia on linseed : effects of temperature, incubation time, leaf wetness and light regime
Vloutoglou, I.; Fitt, Bruce D.L.; Lucas, J. A. (1996-06)Conidia of Alternaria linicola germinated on both water agar and linseed leaves (detached or attached) over a wide range of temperatures (5-25 degrees C) by producing one to several germ tubes. At temperatures between 10 ... -
Infection of linseed by Alternaria linicola : Effects of inoculum density, temperature, leaf wetness and light regime
Vloutoglou, I.; Fitt, Bruce D.L.; Lucas, J. A. (1999-09)Controlled environment studies were conducted to determine the effects of inoculum density, temperature, leaf wetness and light regime on the infection of linseed by Alternaria linicola. The % cotyledons and leaves with ... -
Leptosphaeria biglobosa can induce higher resistance of Brassica napus to Phoma stem canker by triggering earlier JA/ET pathway and stronger SA pathway both locally and systematically
Liu, R.; Liu, S. Y.; Fitt, Bruce D.L.; Cool, Hans J.; Latunde-Dada, A. O.; Huang, Yongju; Li, Z.; Lucas, J. A. (2004) -
Periodicity and gradients in dispersal of Alternaria linicola in linseed crops
Vloutoglou, I.; Fitt, Bruce D.L.; Lucas, J. A. (1995-11)Conidia of Alternaria linicola produced on infected linseed crops were mainly dispersed by wind. The numbers of conidia in the air above linseed crops collected by a Burkard spore sampler were greatest between 12:00 h and ... -
Population structures of global isolate collections of Leptosphaeria maculans and L. biglobosa, the causal organsims of phoma stem canker and stem lesions on oilseed rape [P18]
Latunde-Dada, A.O.; Liu, Z.; Downes, K.; Fitt, Bruce D.L.; Lucas, J. A.; Crute, I. R. (2008) -
Resistance to Leptosphaeria maculans (phoma stem canker) in Brassica napus (oilseed rape) induced by Leptosphaeria biglobosa and chemical defence activators in field and controlled environments
Liu, S. Y.; Liu, Z.; Fitt, Bruce D.L.; Evans, Neal; Foster, S. J.; Huang, Y. J.; Latunde-Dada, A. O.; Lucas, J. A. (2006-06)Effects of pretreatment of Brassica napus leaves with ascospores of Leptosphaeria biglobosa or chemical defence activators [acibenzolar-S-methyl (ASM) or menadione sodium bisulphite (MSB)] on infection by ascospores of ... -
Survival and seed to seedling transmission of Alternaria linicola on linseed
Vloutoglou, I.; Fitt, Bruce D.L.; Lucas, J. A. (1995-08)Alternaria linicola survived as thick-walled chlamydospores in hyphal or conidial cells on infected linseed stem debris, either on the soil surface or buried in the soil, during the period between the harvest of linseed ... -
Symptomless infection by Rhynchosporium commune in relation to control of barley leaf blotch
Atkins, Simon D.; Newton, A. C.; Fraaije, B. A.; Lucas, J. A.; Fitt, Bruce D.L. (2011)Rhynchosporium leaf blotch (caused by Rhynchosporium commune) is the most economically important disease of barley in the UK, but epidemics can be difficult to control with fungicides and the basis of cultivar resistance ...