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Unsaturation of vapour pressure inside leaves: fundamental, but unknown. This project aims to determine when and to what extent the air inside leaves becomes unsaturated with water vapour. All current interpretation and modelling of leaf gas exchange assumes saturation under all circumstances. Compelling evidence has been obtained that suggests this is not true under moderate air vapour pressure deficits. A novel technique will be employed to assess the water vapour concentration of the air insi ....Unsaturation of vapour pressure inside leaves: fundamental, but unknown. This project aims to determine when and to what extent the air inside leaves becomes unsaturated with water vapour. All current interpretation and modelling of leaf gas exchange assumes saturation under all circumstances. Compelling evidence has been obtained that suggests this is not true under moderate air vapour pressure deficits. A novel technique will be employed to assess the water vapour concentration of the air inside leaves based on stable isotope analysis of carbon dioxide and water vapour exchanged between leaves and air. The project is expected to provide fundamental knowledge about how stomata regulate photosynthesis and water use, with significant implications for modelling vegetation function and for improving the performance of crop plants.Read 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
Top-down rehydration: role of multiple water sources in mangrove function. This project aims to combine cutting-edge analytical and imaging techniques to assess contributions of atmospheric water sources to shoot-water balances, identify leaf traits associated with top-down rehydration, and determine the relative importance of different sources of water used by mangroves in maintenance of photosynthetic carbon assimilation along natural gradients in salinity and aridity. The capacity of shoots ....Top-down rehydration: role of multiple water sources in mangrove function. This project aims to combine cutting-edge analytical and imaging techniques to assess contributions of atmospheric water sources to shoot-water balances, identify leaf traits associated with top-down rehydration, and determine the relative importance of different sources of water used by mangroves in maintenance of photosynthetic carbon assimilation along natural gradients in salinity and aridity. The capacity of shoots to absorb atmospheric water could profoundly affect the diversity, survival and productivity of mangroves where high soil salinity limits water uptake by roots, particularly during hot, dry conditions.Read moreRead less
Interactive effects of salinity and nutrients: linking physiological processes with patterns in mangrove forest productivity. The proposed research will provide insight into physiological mechanisms that underpin mangrove productivity along salinity and aridity gradients, and determine how these factors affect plant responses to nutrient enrichment. Plant traits that increase salt and drought tolerance will be identified, thereby assisting development of plant varieties suited to Australian cond ....Interactive effects of salinity and nutrients: linking physiological processes with patterns in mangrove forest productivity. The proposed research will provide insight into physiological mechanisms that underpin mangrove productivity along salinity and aridity gradients, and determine how these factors affect plant responses to nutrient enrichment. Plant traits that increase salt and drought tolerance will be identified, thereby assisting development of plant varieties suited to Australian conditions. The results will also contribute to development of process-based models to better manage mangrove resources with climate change and increasing nutrient influx from urban or agricultural activities. Such models are essential for managing mangrove productivity for sustainable fisheries, and protecting the ecological well being of the coastal zone.Read moreRead less
Will stomatal responses to humidity and carbon dioxide constrain tropical forest productivity as atmospheric carbon dioxide rises? This project will investigate two physiological processes that will partly determine growth responses of tropical forest trees to rising atmospheric carbon dioxide. The project will produce equations summarising physiological responses that can be incorporated into process-based models of tropical forest productivity.
ARC Centre of Excellence for Translational Photosynthesis. The ARC Centre of Excellence for Translational Photosynthesis seeks to develop and harness advances in photosynthesis research, crop bioengineering, plant phenomics and computational tools to realise increased and sustainable crop yields, opening new routes to achieving the next revolution in plant productivity. It will deliver improved yield by undertaking a continuum of fundamental and applied photosynthesis research and targeting proj ....ARC Centre of Excellence for Translational Photosynthesis. The ARC Centre of Excellence for Translational Photosynthesis seeks to develop and harness advances in photosynthesis research, crop bioengineering, plant phenomics and computational tools to realise increased and sustainable crop yields, opening new routes to achieving the next revolution in plant productivity. It will deliver improved yield by undertaking a continuum of fundamental and applied photosynthesis research and targeting projects with a high probability of producing increased yield. Links with national and international institutions, consortia and breeding companies will enhance the prospects of translating genetic improvements into crops such as wheat, rice and sorghum for improved yield.Read moreRead less
Special Research Initiatives - Grant ID: SR0354787
Funder
Australian Research Council
Funding Amount
$10,000.00
Summary
Research Network for Biotechnological and Environmental Applications of Microalgae (BEAM). The network will facilitate inderdisciplinary and collaborative research into the limitations on microalgal growth leading to the development of new, commercial-scale microalgae culture systems, the production of fine chemicals, bioactive compounds and renewable fuels (hydrogen), as well as environmental applications such as monitoring the physiological state of phytoplankton in the environment, CO2 biorem ....Research Network for Biotechnological and Environmental Applications of Microalgae (BEAM). The network will facilitate inderdisciplinary and collaborative research into the limitations on microalgal growth leading to the development of new, commercial-scale microalgae culture systems, the production of fine chemicals, bioactive compounds and renewable fuels (hydrogen), as well as environmental applications such as monitoring the physiological state of phytoplankton in the environment, CO2 bioremediation and algal/bacterial systems for the bioremediation of contaminated soils. This will be achieved by applying research on photosynthetic light utilisation efficiency and carbon fixation, chlorophyll fluorescence, biochemistry of secondary metabolites, molecular biology and photobioreactor design and engineering, informed by an understanding of the ecology of these algae.Read moreRead less
Mediator: a new concept for controlled gene expression in plant biotechnology. The Mediator protein complex is a new control point for the activation of all genes in higher organisms and the purpose of this project is to understand how three Mediator subunits regulate disease resistance in plants. The outcomes provide a new concept to direct natural gene expression towards robust crop plants able to cope with climatic variations.
Reading the isotopic archive: carbon and oxygen stable isotope ratios as recorders of plant physiological processes. This project will investigate how plant physiological processes are reflected in stable isotope ratios of carbon and oxygen in plant tissues. Results will contribute towards a mechanistic understanding of the processes that cause isotopic modifications, thereby enabling an improved interpretation of naturally occurring stable isotope signals.
Salinity tolerance along an aridity gradient: linking physiological processes with morphological constraints on leaf function in mangroves. The proposed research will provide insight into the physiological and morphological features that control the productivity of mangrove forests across broad gradients in salinity and aridity. Central to this is this identification of plant traits that increase salt and drought tolerance, which will assist in the development of plant varieties suited to Austra ....Salinity tolerance along an aridity gradient: linking physiological processes with morphological constraints on leaf function in mangroves. The proposed research will provide insight into the physiological and morphological features that control the productivity of mangrove forests across broad gradients in salinity and aridity. Central to this is this identification of plant traits that increase salt and drought tolerance, which will assist in the development of plant varieties suited to Australian conditions. The results will also contribute to development of process-based models to better predict the response of mangrove vegetation to changing climate. A deep understanding of the processes that influence the growth and survival of mangroves is of fundamental importance to sustainable fisheries and protection of wildlife reliant on coastal ecosystems. Read moreRead less