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Roles of arbuscular mycorrhizal fungi (AMF) in plant competition: revealing underlying physiological and molecular mechanisms. This project will increase understanding of physiological and molecular mechanisms that enable widespread beneficial symbiotic soil fungi to influence plant productivity and biodiversity of natural and managed plant ecosystems. It will also aid biotechnological and agronomic goals of maximizing use of scarce soil nutrients, especially phosphate. Results will be important ....Roles of arbuscular mycorrhizal fungi (AMF) in plant competition: revealing underlying physiological and molecular mechanisms. This project will increase understanding of physiological and molecular mechanisms that enable widespread beneficial symbiotic soil fungi to influence plant productivity and biodiversity of natural and managed plant ecosystems. It will also aid biotechnological and agronomic goals of maximizing use of scarce soil nutrients, especially phosphate. Results will be important for agro-industry and Government groups focusing on 'healthy soil'. The project adds considerably to investment in research, infrastructure and international collaboration in this priority area. It will enhance Australia's reputation for research in soil biology and provide high standards in research education and training in an internationally recognised environment.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE140100505
Funder
Australian Research Council
Funding Amount
$394,620.00
Summary
Is plant organisation the fountain of eternal youth? The decline in performance at advanced ages, senescence, affects life quality, lifespan and productivity. It is believed that this phenomenon is universal, including all species from microbes to humans. Yet, some plants do not exhibit senescence. This project will identify the mechanisms that enable plants to escape senescence. Using a unique global demographic database, the project will determine whether, how and when senescence has evolved a ....Is plant organisation the fountain of eternal youth? The decline in performance at advanced ages, senescence, affects life quality, lifespan and productivity. It is believed that this phenomenon is universal, including all species from microbes to humans. Yet, some plants do not exhibit senescence. This project will identify the mechanisms that enable plants to escape senescence. Using a unique global demographic database, the project will determine whether, how and when senescence has evolved across 850 plant species. It will also experimentally test how drought, nutrients and resprouting affect senescence in two mallee Eucalyptus species in the Simpson Desert. This research will provide new insights into the evolution of senescence and will elucidate how some plants escape a supposedly unavoidable fate.Read moreRead less
ARC Australia-New Zealand Research Network for Vegetation Function. Plant species vary widely in quantitative functional traits, and in their relations to climate, soils and geography. Global generalizations are emerging. Vegetation Function network will reach from plant function into genomics and crop breeding, into palaeoecology and vegetation history, into landscape management for carbon, water and salinity outcomes, into forecasting future ecosystems under global change, and into phylogeny, ....ARC Australia-New Zealand Research Network for Vegetation Function. Plant species vary widely in quantitative functional traits, and in their relations to climate, soils and geography. Global generalizations are emerging. Vegetation Function network will reach from plant function into genomics and crop breeding, into palaeoecology and vegetation history, into landscape management for carbon, water and salinity outcomes, into forecasting future ecosystems under global change, and into phylogeny, ecoinformatics and evolutionary theory. Across this span, working groups will target nine identified opportunities for breakthrough research. Each research target needs input from two or more disciplines. Together, the nine targets link across disciplines, as a network that spans from genomic to planetary scales.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE130100073
Funder
Australian Research Council
Funding Amount
$280,000.00
Summary
High-throughput sample preparation robotics to enable emerging large-scale plant genomics, metabolomics and proteomics research. Discovering and breeding plants that are best suited for new environmental conditions requires the analysis of many samples to discover the underlying genes, metabolites and proteins. The project will build two robotic instruments that will facilitate the rapid grinding and extraction of plant tissues to facilitate these discoveries across Australia.
Turning water into carbon: a synthesis of plant water-use efficiency from leaf to globe. The efficiency with which plants use water to gain carbon is a fundamental aspect of plant growth that has been frequently measured but is poorly understood. Using our new theory to draw together major datasets, the project will make a dramatic advance in our ability to understand and predict this key aspect of ecosystem function.
Answering longstanding plant ecology questions with new technology: the effects of changes in leaf proteins with age. Total leaf nitrogen is important for major processes in ecosystems. It is used as a predictor for carbon fixation because photosynthesis proteins are a large fraction of leaf nitrogen. Yet leaf nitrogen may also be allocated to stress-response and defense-related proteins at the expense of photosynthesis proteins. Our working hypothesis might explain two important ecological patt ....Answering longstanding plant ecology questions with new technology: the effects of changes in leaf proteins with age. Total leaf nitrogen is important for major processes in ecosystems. It is used as a predictor for carbon fixation because photosynthesis proteins are a large fraction of leaf nitrogen. Yet leaf nitrogen may also be allocated to stress-response and defense-related proteins at the expense of photosynthesis proteins. Our working hypothesis might explain two important ecological patterns: the decline of photosynthetic nitrogen use efficiency with leaf age; and, low and variable nitrogen recovery levels from senescent leaves across species and habitats. New quantitative proteomics methods together with protein functional categorisation can answer these questions across dozens of Australian native plant species.Read moreRead less
Does plant phosphorus economy determine ecological status in biodiverse Australian communities? The phosphorus (P)-impoverished nature of the soils of south-western Australia has allowed the evolution of many plant species that are amazingly efficient at acquiring and utilising P. Among the most P efficient are species of the Proteaceae, which produce cluster roots. We will explore why less efficient species can co-occur with the very efficient Proteaceae. A deep and thorough understanding of th ....Does plant phosphorus economy determine ecological status in biodiverse Australian communities? The phosphorus (P)-impoverished nature of the soils of south-western Australia has allowed the evolution of many plant species that are amazingly efficient at acquiring and utilising P. Among the most P efficient are species of the Proteaceae, which produce cluster roots. We will explore why less efficient species can co-occur with the very efficient Proteaceae. A deep and thorough understanding of the mechanism determining P efficiency of these species will contribute significantly to our basic understanding of P nutrition in plants and to our understanding of the P-impoverished ecosystems of the southwest. It will also assist in developing crops that are more efficient at acquiring and/or utilising P.Read moreRead less
Toxic cyanobacterial blooms in a carbon dioxide (CO2)-rich world: assessing the impacts of global climate change. Cyanobacterial blooms in Australia cost the country over $150 million every year because of their impacts on water quality and animal and human health. The frequency, distribution and intensity of these blooms are all expected to increase worldwide as global climate change impacts increase over the next century. This project will provide much needed information of the severity of imp ....Toxic cyanobacterial blooms in a carbon dioxide (CO2)-rich world: assessing the impacts of global climate change. Cyanobacterial blooms in Australia cost the country over $150 million every year because of their impacts on water quality and animal and human health. The frequency, distribution and intensity of these blooms are all expected to increase worldwide as global climate change impacts increase over the next century. This project will provide much needed information of the severity of impacts on cyanobacteria commonly causing blooms in Australian aquatic ecosystems. This information will be important to authorities responsible for managing our precious water resources.Read moreRead less
Understanding responses of tightly coupled ecological interactions of biota vulnerable to climate change: endangered Australian cycads and their pollinators. Australian cycads are iconic plants. Most of the forty Macrozamia species have small, fragmented distributions and fifteen are endangered or vulnerable. They are at risk from harvesting by collectors and pollination failure, because a highly specialised relationship with insect pollinators is crucial to their persistence in nature. Cycads r ....Understanding responses of tightly coupled ecological interactions of biota vulnerable to climate change: endangered Australian cycads and their pollinators. Australian cycads are iconic plants. Most of the forty Macrozamia species have small, fragmented distributions and fifteen are endangered or vulnerable. They are at risk from harvesting by collectors and pollination failure, because a highly specialised relationship with insect pollinators is crucial to their persistence in nature. Cycads release chemo-attractants by increasing cone temperatures when ambient temperature reaches a threshold, so climate change will affect these systems. An understanding of this temperature-dependent relationship will help predict future fates of cycads and other tightly coupled ecological interactions. Our integrated approach will generate knowledge to help manage vulnerable Australian biodiversity.Read moreRead less
Invasive plant success and multi-trophic level chemical ecology using Paterson's curse as a model. The role of plant defence compounds discovered recently in Paterson's curse will be studied in the plant's native western Mediterranean and in southern Australia. Findings will support biological control efforts and provide fundamental insights into the ecological mechanisms that allow such plants to become aggressive invaders.