Molecular tools for controlling pathogenic viruses in the seed potato industry. In this project, molecular diagnostic tools will be generated that will improve the ability of testing laboratories to deliver cost-effective virus diagnostic services to seed potato certification authorities in Australia. There will be economic benefits from increased yields of fresh and processing potatoes, higher prices in domestic and export markets, expansion of current and development of new markets, and licen ....Molecular tools for controlling pathogenic viruses in the seed potato industry. In this project, molecular diagnostic tools will be generated that will improve the ability of testing laboratories to deliver cost-effective virus diagnostic services to seed potato certification authorities in Australia. There will be economic benefits from increased yields of fresh and processing potatoes, higher prices in domestic and export markets, expansion of current and development of new markets, and licensing of tests. There will also be economic and social returns to the broader rural community by better management and control of virus pathogens, and less reliance on environmentally undesirable chemical control measures. The project will provide expert training of two PhD students in practical and molecular plant virology. Read moreRead less
Detection and elimination of resting spores of Olpidium vectoring lettuce big-vein disease in lettuce seedling nursery production. This project will devise nucleic acid and serology methods for detection of Olpidium brassicae, vector of lettuce big-vein disease (LBVD), during various phases of lettuce seedling production in nursery environments. It will be the first study to develop sustainable and environmentally responsible nursery best-practice protocols for integrated management of O. brass ....Detection and elimination of resting spores of Olpidium vectoring lettuce big-vein disease in lettuce seedling nursery production. This project will devise nucleic acid and serology methods for detection of Olpidium brassicae, vector of lettuce big-vein disease (LBVD), during various phases of lettuce seedling production in nursery environments. It will be the first study to develop sustainable and environmentally responsible nursery best-practice protocols for integrated management of O. brassicae in routine seedling production and for management within the lettuce industry. These protocols will ensure that the spread of LBVD from contaminated lettuce nurseries to farms is prevented. It will also be a unique study of the establishment of a disease in new land with different soils and agricultural practices.Read moreRead less
Regulation of principal components of the antioxidant system in table grapes. An expanded ?health-claims? system will likely be enacted by Food Standards Australia New Zealand within two years. Horticultural industries are attracted to the promotional ?point of difference? this offers. Many health-promoting compounds are antioxidants, including polyphenols that are abundant in fruit such as grape and citrus. Antioxidants are also involved in the plant's defences against abiotic and biotic stres ....Regulation of principal components of the antioxidant system in table grapes. An expanded ?health-claims? system will likely be enacted by Food Standards Australia New Zealand within two years. Horticultural industries are attracted to the promotional ?point of difference? this offers. Many health-promoting compounds are antioxidants, including polyphenols that are abundant in fruit such as grape and citrus. Antioxidants are also involved in the plant's defences against abiotic and biotic stress. Here, the WA Table Grape industry has committed funds for an APAI to study regulation of antioxidants in relation to nutritional and postharvest qualities. Effects of preconditioning with mild oxidative stresses will be assayed, postharvest, using molecular and biochemical techniques.Read moreRead less
Expression profiling of giant cells induced in host plant roots by root-knot nematodes. Root-knot nematodes cause crop losses of over $400 million per annum in Australia. Control by toxic chemical nematicodes is expensive and can pollute groundwater. Benefits from this research for the Australian community are: (i) it will ensure that Australian researchers stay at the forefront of research in plant nematology, (ii) it provides significant local and international linkages that will stimulate res ....Expression profiling of giant cells induced in host plant roots by root-knot nematodes. Root-knot nematodes cause crop losses of over $400 million per annum in Australia. Control by toxic chemical nematicodes is expensive and can pollute groundwater. Benefits from this research for the Australian community are: (i) it will ensure that Australian researchers stay at the forefront of research in plant nematology, (ii) it provides significant local and international linkages that will stimulate research outputs, and (iii) new knowledge will be generated on how plants respond to attack by nematodes - this will generate new intellectual property, leading to better control methods and reduced costs that will support rural communities, and reduce environmental pollution.Read moreRead less
Influence of high temperature on phenology, metabolism and the fate of axillary buds and inflorescences in grapevine. Subtropical regions in Australia, due to a warm climate, land and water availability, have the potential to produce a variety of agricultural produce, particularly fruit, to meet market demand. However adoption of fruit crops, many of which, including table grape, have temperate origins, requires intensive management. Despite years of agronomic R&D, production remains variable du ....Influence of high temperature on phenology, metabolism and the fate of axillary buds and inflorescences in grapevine. Subtropical regions in Australia, due to a warm climate, land and water availability, have the potential to produce a variety of agricultural produce, particularly fruit, to meet market demand. However adoption of fruit crops, many of which, including table grape, have temperate origins, requires intensive management. Despite years of agronomic R&D, production remains variable due to a lack of fundamental knowledge on how climate impacts on the development cycle, particularly flowering, required to produce fruit. This proposal will carry out basic research to provide knowledge that will enable consistent production and expansion of table grape and other temperate crop industries.Read moreRead less
Understanding disease resistance gene evolution across the Brassicaceae. Pan genomes represent the diversity of a species, including structural and sequence variation, which cannot be provided by a reference genome alone. In this project we will characterise resistance gene diversity across the Brassicaceae pan genomes. Through comparison with resistance gene diversity in cultivated Brassica species we will understand selection underlying resistance gene evolution in wild species and subsequent ....Understanding disease resistance gene evolution across the Brassicaceae. Pan genomes represent the diversity of a species, including structural and sequence variation, which cannot be provided by a reference genome alone. In this project we will characterise resistance gene diversity across the Brassicaceae pan genomes. Through comparison with resistance gene diversity in cultivated Brassica species we will understand selection underlying resistance gene evolution in wild species and subsequent domestication and breeding. Knowledge on how variation affects disease susceptibility, especially to the devastating fungal pathogen blackleg, and contributes to phenotypic variation, will lead to improved plant protection strategies and increased crop resilience.Read moreRead less
Genome editing to improve the dietary quality of potato. The project aims to develop non-genetically modified (non-GM) potato varieties with lower glycaemic index (GI) but good agronomic and culinary traits. Potato is the world's fourth-most important food. It is integral to the western diet and consumption is rising rapidly in Asia. However, the starch in cooked potato is readily digestible causing a rapid elevation of blood sugar levels on eating (i.e. it has a high GI). Long-term consumption ....Genome editing to improve the dietary quality of potato. The project aims to develop non-genetically modified (non-GM) potato varieties with lower glycaemic index (GI) but good agronomic and culinary traits. Potato is the world's fourth-most important food. It is integral to the western diet and consumption is rising rapidly in Asia. However, the starch in cooked potato is readily digestible causing a rapid elevation of blood sugar levels on eating (i.e. it has a high GI). Long-term consumption of meals with high GI is associated with increased risk of obesity, type-2 diabetes and cardiovascular disease. This project aims to use new genome editing methods to silence key genes that influence starch composition and thus develop non-GM potato varieties with lower GI to reduce these risks.Read moreRead less
The More the Merrier? Investigating copy number variation in Brassicas. This project intends to develop an understanding of how gene copy number variation affects disease susceptibility to help in the design of novel plant protection strategies. Gene copy number variants (CNVs) are segments of DNA that have been duplicated or lost in the genome of one individual or line with respect to another. CNVs have been shown to contribute significantly to phenotypic differences in humans, including diseas ....The More the Merrier? Investigating copy number variation in Brassicas. This project intends to develop an understanding of how gene copy number variation affects disease susceptibility to help in the design of novel plant protection strategies. Gene copy number variants (CNVs) are segments of DNA that have been duplicated or lost in the genome of one individual or line with respect to another. CNVs have been shown to contribute significantly to phenotypic differences in humans, including disease susceptibility, and the same seems to apply in plants. This project aims to apply the genome sequences for Brassica species to detect CNVs from re-sequencing data. Knowing how this variation affects an individual or line’s disease susceptibility, especially to the devastating fungal pathogen blackleg, could improve plant protection strategies and crop production.Read moreRead less
Factors responsible for host resistance to the pathogen Sclerotinia sclerotiorum for developing effective disease management in vegetable brassicas. Through successful identification of host resistance in vegetable Brassicas to Sclerotinia sclerotiorum and determining the factors associated with this resistance, breeders, for the first time, will be able to develop varieties with resistance against this difficult-to-manage pathogen. Benefits include prevention of severe losses in vegetable Bras ....Factors responsible for host resistance to the pathogen Sclerotinia sclerotiorum for developing effective disease management in vegetable brassicas. Through successful identification of host resistance in vegetable Brassicas to Sclerotinia sclerotiorum and determining the factors associated with this resistance, breeders, for the first time, will be able to develop varieties with resistance against this difficult-to-manage pathogen. Benefits include prevention of severe losses in vegetable Brassicas from Sclerotinia, and more viable and sustainable production with less reliance upon fungicides and toxic or ineffective fumigants. This research addresses the National Research Priority, an environmentally sustainable Australia, and the priority goal transforming existing industries, and will particularly benefit Australian horticultural communities.Read moreRead less
New biotech methods for crop quality assurance. Quality assurance of crop products is a key for Australia to be competitive in the world marketplace. The power of molecular diagnostics has not been applied to this important but neglected part of the produce handling chain. In this project research will be undertaken that will lead to low cost on site assays to test for variety preservation, contamination, and presence of pests and diseases. It employs the tools of genomics and proteomics to p ....New biotech methods for crop quality assurance. Quality assurance of crop products is a key for Australia to be competitive in the world marketplace. The power of molecular diagnostics has not been applied to this important but neglected part of the produce handling chain. In this project research will be undertaken that will lead to low cost on site assays to test for variety preservation, contamination, and presence of pests and diseases. It employs the tools of genomics and proteomics to provide basic understanding of processes which can be developed into cost effective analyses for practical use by industry to ensure quality assurance.Read moreRead less