Martin John Barbetti

Learn More
Phoma stem canker is an internationally important disease of oilseed rape (Brassica napus, canola, rapeseed), causing serious losses in Europe, Australia and North America. UK losses of €56M per season are estimated using national disease survey data and a yield loss formula. Phoma stem canker pathogen populations comprise two main species, Leptosphaeria(More)
ABSTRACT Leptosphaeria maculans, the causal agent of stem canker of oilseed rape, develops gene-for-gene interactions with its hosts. To date, eight L. maculans avirulence (Avr) genes, AvrLm1 to AvrLm8, have been genetically characterized. An additional Avr gene, AvrLm9, that interacts with the resistance gene Rlm9, was genetically characterized here(More)
ABSTRACT A simple model has been developed to predict the onset of pseudothecia maturity and seasonal ascospore showers in relation to blackleg disease in canola, caused by the fungus Leptosphaeria maculans. The model considers a combination of two weather factors, daily mean temperature and daily total rainfall, to drive progress of maturity of(More)
Necrotrophic pathogens of the cool season food legumes (pea, lentil, chickpea, faba bean and lupin) cause wide spread disease and severe crop losses throughout the world. Environmental conditions play an important role in the development and spread of these diseases. Form of inoculum, inoculum concentration and physiological plant growth stage all affect(More)
a Centre for Cropping Systems, Department of Agriculture and Food, Western Australia, PO Box 483, Northam, WA 6401, Australia; b Rothamsted Research, Harpenden, Hertfordshire, AL5 2QJ, UK; c UMR d’Agronomie INRA/INA P-G, BP 1, 78850 Thiverval-Grignon, France; d Department of Agriculture and Food, Western Australia, Locked Bag 4, Bentley Delivery Centre, WA(More)
Stem canker of crucifers is caused by an ascomycete species complex comprising of two main species, Leptosphaeria maculans and L. biglobosa. These are composed of at least seven distinct subclades based on biochemical data or on sequences of internal transcribed spacer (ITS), the mating type MAT1-2 or fragments of actin or beta-tubulin genes. In the course(More)
Leptosphaeria maculans, a dothideomycete fungus causing stem canker on oilseed rape, develops gene-for-gene interactions with its host plants. It has the ability to rapidly adapt to selection pressure exerted by cultivars harbouring novel resistance genes as exemplified recently by the 3-year evolution towards virulence at the AvrLm1 locus in French(More)
Burning of fossil fuel, large scale clearing of forests and other human activities have changed global climate. Atmospheric concentration of radiatively active CO2, methane, nitrous oxide and chlorofluorocarbons has increased to cause global warming. In Australia temperature is projected to rise between 1 and 3°C by 2100. This review is the result of a(More)
Strawberry (Fragaria×ananassa) is one of the most important berry crops in the world. Root rot of strawberry caused by Rhizoctonia spp. is a serious threat to commercial strawberry production worldwide. However, there is no information on the genetic diversity and phylogenetic status of Rhizoctonia spp. associated with root rot of strawberry in Australia.(More)
Sclerotinia stem rot, caused by Sclerotinia sclerotiorum, is a serious problem in oilseed rape in China and Australia. Locating effective sources of host resistance offers the best long-term prospects for improved management of this disease. For these reasons, 93 genotypes of Brassica napus and B. juncea from China and Australia were screened in the field(More)