Disorder as a novel determinant of photosynthetic structure and function: an experimental study. Australia enjoys a world reputation in photosynthesis research, typified by hosting the 2001 International Photosynthesis Congress. It also has a claim to fame for theoretical work in non-equilibrium thermodynamics concerning production of disorder or entropy, yielding new insights into planetary climates. This experimental project investigates the novel relation between entropy/entropy production ....Disorder as a novel determinant of photosynthetic structure and function: an experimental study. Australia enjoys a world reputation in photosynthesis research, typified by hosting the 2001 International Photosynthesis Congress. It also has a claim to fame for theoretical work in non-equilibrium thermodynamics concerning production of disorder or entropy, yielding new insights into planetary climates. This experimental project investigates the novel relation between entropy/entropy production and the structure/function of the solar powerhouse of plants (chloroplasts), and addresses fundamental questions at the interface of biology and physics. The research explores chloroplasts as a manifestation of the all-pervading Second Law of Thermodynamics, advancing Australia's contribution to basic science and helping to train researchers.Read moreRead less
Effects of global climate change on marine phytoplankton: interactions between UV radiation and elevated atmospheric carbon dioxide levels. Global climate change is one of the most significant ecological challenges for the 21st Century. Phytoplankton contribute over 45% of the planet's annual net primary production and form the basis of most aquatic food chains. Conversely, some phytoplankton are toxic and cause problems in marine and fresh waters. Climate change can potentially disrupt aquatic ....Effects of global climate change on marine phytoplankton: interactions between UV radiation and elevated atmospheric carbon dioxide levels. Global climate change is one of the most significant ecological challenges for the 21st Century. Phytoplankton contribute over 45% of the planet's annual net primary production and form the basis of most aquatic food chains. Conversely, some phytoplankton are toxic and cause problems in marine and fresh waters. Climate change can potentially disrupt aquatic foodchains by its impact on primary production by phytoplankton or stimulating growth of potentially toxic forms. Our project will investigate the combined impact of increasing carbon dioxide and ultraviolet light on phytoplankton and thereby help climate modellers assess the impact of climate change on aquatic ecosystems and particularly on the nation's and the world's fisheries.Read moreRead less
What limits CO2 diffusion inside leaves? Dissecting the diffusion path with Arabidopsis mutants. Human induced increase in atmospheric carbon dioxide is now generally accepted as contributing to global warming. Forecasting our future impact relies on models of terrestrial photosynthesis which use a signature in the atmosphere created by plants when they discriminate against the heavy stable isotope of carbon during photosynthesis. Discrimination between isotopes is affected by carbon dioxide dif ....What limits CO2 diffusion inside leaves? Dissecting the diffusion path with Arabidopsis mutants. Human induced increase in atmospheric carbon dioxide is now generally accepted as contributing to global warming. Forecasting our future impact relies on models of terrestrial photosynthesis which use a signature in the atmosphere created by plants when they discriminate against the heavy stable isotope of carbon during photosynthesis. Discrimination between isotopes is affected by carbon dioxide diffusion within leaves and key steps in this process will be identified through the use of Arabidopsis mutants. Better representation of this process in models will improve estimates of terrestrial photosynthesis and climate change forecastsRead moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0453608
Funder
Australian Research Council
Funding Amount
$579,230.00
Summary
Multifunctional confocal laser scanning microscope with time resolved and two photon imaging and fluorescence correlation capabilities. We seek to establish an Australian first confocal laser scanning microscope with time resolved imaging and fluorescence correlation spectroscopy capabilities. Its advantages include ultrasensitive detection of weak fluorescent emissions against high autofluorescent background by using fluorescence lifetime signatures, with over three orders of magnitude discrimi ....Multifunctional confocal laser scanning microscope with time resolved and two photon imaging and fluorescence correlation capabilities. We seek to establish an Australian first confocal laser scanning microscope with time resolved imaging and fluorescence correlation spectroscopy capabilities. Its advantages include ultrasensitive detection of weak fluorescent emissions against high autofluorescent background by using fluorescence lifetime signatures, with over three orders of magnitude discrimination improvement. The system will also be able to monitor binding of single molecules. These techniques will open new and exciting avenues for interdisciplinary research at the frontier between biological and physical sciences. The microscope will operate within an existing multi-user Optical Characterisation Facility supporting research of an established network of scientists in the Sydney area.Read moreRead less
The mechanism of photosynthetic water oxidation. Photosynthesis reactions capture sunlight and provide energy for the biosphere, while generating atmospheric oxygen. This project will unravel the chemical secret of oxygen production and provide a future blueprint for biocatalysts, which are required to generate renewable molecular fuels.
Heterotrophically grown microalgae as a feed source for the Australian aquaculture industry. The Australian aquaculture industry has rapidly grown in the past decade producing premium quality, high value species, e.g. tuna and oyster. In the new millennia it is predicted that the Australia aquaculture industry will be the most profitable area within the Australian seafood industry. An integral component for the long-term sustainability of the Australian aquaculture industry is the availability o ....Heterotrophically grown microalgae as a feed source for the Australian aquaculture industry. The Australian aquaculture industry has rapidly grown in the past decade producing premium quality, high value species, e.g. tuna and oyster. In the new millennia it is predicted that the Australia aquaculture industry will be the most profitable area within the Australian seafood industry. An integral component for the long-term sustainability of the Australian aquaculture industry is the availability of top-quality microalgal concentrates, shelf-stable pastes or live feeds, which provide the nutritional requirements of aquatic species in the hatcheries. This project will develop novel microalgal production strategies that would add value to the Australian aquaculture industry.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE160100804
Funder
Australian Research Council
Funding Amount
$370,000.00
Summary
Controlling chloride in plants. This project aims to discover novel components that control how plants acquire and manage chloride. Chloride is one of the two ions that commonly cause salt stress, which is a major threat to Australia’s agriculture. Regions affected by salinity are increasing worldwide due to changing weather patterns and poor land management. Knowledge of plant chloride management is underdeveloped, despite the reduction in crop yield caused by high chloride accumulation. The an ....Controlling chloride in plants. This project aims to discover novel components that control how plants acquire and manage chloride. Chloride is one of the two ions that commonly cause salt stress, which is a major threat to Australia’s agriculture. Regions affected by salinity are increasing worldwide due to changing weather patterns and poor land management. Knowledge of plant chloride management is underdeveloped, despite the reduction in crop yield caused by high chloride accumulation. The anticipated outcome of this project will inform strategies aimed at selecting for optimised chloride management traits to generate crops with improved yield.Read moreRead less
Functional analysis of alternative splicing in plants. Higher temperatures affect flowering and seed set in plants. How plants sense and respond to temperature is currently unclear. Here we study alternative splicing, one of the processes affected by temperature. These studies will advance our knowledge and help develop crops that can withstand negative effects of climate change.
Discovery Early Career Researcher Award - Grant ID: DE160101536
Funder
Australian Research Council
Funding Amount
$369,000.00
Summary
How does mitochondrial biogenesis regulate seed germination in plants? This project aims to develop a better understanding of seed germination to enable the generation of cereal seeds with optimised rates of germination for agricultural production. Seed germination is a fundamental phase of the plant life cycle. Every year, alterations in the rate of germination cause significant crop loss in rice and other cereals. Mitochondria are emerging as essential signalling hubs in the regulation of seed ....How does mitochondrial biogenesis regulate seed germination in plants? This project aims to develop a better understanding of seed germination to enable the generation of cereal seeds with optimised rates of germination for agricultural production. Seed germination is a fundamental phase of the plant life cycle. Every year, alterations in the rate of germination cause significant crop loss in rice and other cereals. Mitochondria are emerging as essential signalling hubs in the regulation of seed germination. The project aims to combine the latest technologies and molecular approaches with genetics to understand how mitochondria regulate seed germination and the rate of germination progression in rice. The project also plans to investigate and confirm the interplay between oxygen signalling, phytohormones and mitochondrial biogenesis.Read moreRead less
Investigating a new paradigm for plant-pathogen interactions; Identification of host-selective toxin proteins in the wheat pathogen Stagonospora nodorum. Stagonospora nodorum is a fungus that causes leaf and glume blotch disease on wheat. This disease alone causes $55 million dollars in yield losses per annum. Traditional breeding methods have yielded crops that are only mildly resistant leaving control of the disease to be worryingly reliant on fungicides. This project aims to identify and char ....Investigating a new paradigm for plant-pathogen interactions; Identification of host-selective toxin proteins in the wheat pathogen Stagonospora nodorum. Stagonospora nodorum is a fungus that causes leaf and glume blotch disease on wheat. This disease alone causes $55 million dollars in yield losses per annum. Traditional breeding methods have yielded crops that are only mildly resistant leaving control of the disease to be worryingly reliant on fungicides. This project aims to identify and characterise proteins that the fungus secretes to cause disease on wheat. By identifying these proteins, it is anticipated that strategies, both traditional and modern, could be employed to enable better control of the disease. This in turn would help provide a long term and secure supply of wheat and wheat based products to the community.Read moreRead less