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Catalogue: GRDC Final Reports
The project has made excellent progress in identifying key genes linked to oxidative stress that, when mutated, make the model plant Arabidopsis highly susceptible to AG8... The project has also identified other genes whose expression is highly induced following R. solani infection in Arabidopsis and wheat... The exciting results were further supported by large scale analysis of gene expression that revealed the resistance to AG8 was associated with the activity of a number of genes linked to the generation of ROS and similar induction of ROS related genes was seen in wheat after AG8 infection using microarrays...
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Catalogue: GRDC Publications
Overall, barley diseases have the potential to cause very significant costs for farmers... Incidence is 30 per_cent frequency in 30 per_cent of the area, so that the average incidence of the disease affecting the crop is 9 per_cent... Overall, breeding contributes more than 25 per cent of the control for 14 diseases, cultural methods for 32 diseases, and pesticides for six barley diseases...
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Catalogue: Ground Cover
"Of the 27 crop pathogens studied so far using growth cabinets with temperature and CO 2 controls, disease severity was found to increase for a majority of pathogens under high temperatures and CO 2 ," Dr Chakraborty says... We can expect new pathogen strains to emerge after fewer infection cycles.".. Dr Chakraborty states that our current knowledge is inadequate to deal with plant disease impacts and that the kind of experiment he favours is called 'FACE' - free to air CO 2 enrichment - in which communities of plants and pathogens are studied under field conditions but with artificially raised levels of CO2...
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Catalogue: Grains Notes DEPI VIC
Without appropriate management, diseases can severely impact on the yield and quality of wheat crops in the Wimmera region of Victoria... The Information Note first discusses the integrated management strategies that are required to protect crops from losses due to disease, and then discusses the important diseases of wheat in more detail... For some diseases, a single management strategy is effective, while for others a number of approaches need to be utilised together to ensure effective management...
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Catalogue: GRDC Final Reports
" Reducing the impact of pulse diseases in the northern region (incorporating DAQ00073) DAQ00108 Start Date: 01/07/2006.. The previous year, in collaboration with Pulse Australia, this project had provided many local agronomists with information on recognition of ascochyta blight at a certified chickpea agronomist course at Emerald, and a pre-season chickpea Update attended by over 70 people... Despite the focus on IDM for individual pathogen-host combinations, there is a need to understand the impact of IDM packages on a whole farming system scale on the interrelatedness between all of the plant pathogens in that system...
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Catalogue: GRDC Research Summaries
Necrotrophic diseases are caused by fungal pathogens that benefit from causing damage to the plant, in contrast to biotrophs that benefit from maintaining the host cells in a living state... The most important necrotrophic foliar diseases in Australia are Stagonospora nodorum blotch and tan spot on wheat, two net-blotch diseases of barley, diseases of legumes caused by the Ascochyta group and canola blackleg... A series of studies by us and our collaborator Friesen have shown that different isolates of S. nodorum can be placed in different races depending on which of up to 17 different effectors are produced...
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Catalogue: GRDC Final Reports
The aim of the project was to define the plant pathogen incursion risk posed by travellers returning from overseas and interstate... An additional aim of the project was to increase awareness and education of international and domestic travellers who have been working in field crops, or visiting farms, about the risks of spreading plant pathogens on hair, clothing and footwear if these are not cleaned appropriately... Published PCR methods were evaluated for use in identification of the fungal spores...
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Catalogue: Grains Notes DEPI VIC
Without appropriate management, diseases can severely impact on the yield and quality of wheat crops in the Wimmera region of Victoria... The Information Note first discusses the integrated management strategies that are required to protect crops from losses due to disease, and then discusses the important diseases of wheat in more detail... For some diseases, a single management strategy is effective, while for others a number of approaches need to be utilised together to ensure effective management...
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Catalogue: Ground Cover
By Emma Leonard With her roots in a family farm and her research career branching across the globe for more than 30 years, Professor Barbara Howlett brings a wealth of experience to the Southern Panel... Her visit to Stanford University in 1988, where she studied the genetics of the model fungus Neurospora crassa, laid the foundation for her research tackling the genetics of the blackleg fungus back in Australia... One of Professor Howlett's career highlights was in collaboration with colleagues in Versailles, France, successfully winning a grant from the French government to acquire the genome sequence of the blackleg fungus...
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Catalogue: GRDC Final Reports
Disease is one of the major yield constraints in pulse crops in Australian cropping systems... From the information strategic management practices can be developed to reduce the level of disease in crops making them more reliable and profitable... Studies on aerial spore release were conducted using trap plants at a number of sites over the growing season, and results were linked to environmental data collected via automatic weather stations...
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