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Improving plant reproductive success under heat stress: A sweet approach. This project aims to determine how genetic manipulation of cell wall invertase (CWIN) activity could regulate pollen germination, elongation and fruit set under heat stress using tomato as a model. Plant reproductive processes are highly susceptible to heat stress, which often leads to pollination failure and fruit and seed abortion, hence irreversible yield loss. Research has established that CWIN-mediated sugar metabolis ....Improving plant reproductive success under heat stress: A sweet approach. This project aims to determine how genetic manipulation of cell wall invertase (CWIN) activity could regulate pollen germination, elongation and fruit set under heat stress using tomato as a model. Plant reproductive processes are highly susceptible to heat stress, which often leads to pollination failure and fruit and seed abortion, hence irreversible yield loss. Research has established that CWIN-mediated sugar metabolism and signaling may play crucial roles in pollen growth and fruit set under heat stress. The intended outcome is the generation of critical knowledge that will advance understanding on reproductive development under heat stress, thereby providing significant benefits, such as novel ideas and solutions for improving crop yield.Read moreRead less
Oxygen isotope discrimination during C4 photosynthesis. Plants with the C4 photosynthetic pathway, like sugarcane and pasture grasses, are vital to Australian agriculture and natural ecosystems. This project will use novel laser spectroscopy to measure oxygen isotope discrimination during photosynthesis and quantify the influence of C4 plants on isotopic signatures of atmospheric CO2.
Can altered sugar sensing improve crop productivity? This project aims at genetically manipulating sugar sensing pathways in the model C4 grass Setaria viridis, and at replacing sugar sensors in the model C3 crop Oryza sativa (rice) with those from S. viridis. This project expects to elucidate the impact of altered sugar perception on crop photosynthesis and yield. Expected outcomes includes advancing a novel “pull” approach to improve yield in C3 crops by using C4-like sugar sensors to reduce f ....Can altered sugar sensing improve crop productivity? This project aims at genetically manipulating sugar sensing pathways in the model C4 grass Setaria viridis, and at replacing sugar sensors in the model C3 crop Oryza sativa (rice) with those from S. viridis. This project expects to elucidate the impact of altered sugar perception on crop photosynthesis and yield. Expected outcomes includes advancing a novel “pull” approach to improve yield in C3 crops by using C4-like sugar sensors to reduce feedback regulation of photosynthesis which in turn limits productivity. This is in contrast to previous ‘push’ approaches aimed at directly increasing photosynthesis. Hence, this project provides significant benefits by contributing to the next green revolution needed to lift agricultural yields.Read moreRead less
Testing climatic, physiological and hydrological assumptions underpinning water yield from montane forests. Water collected in dams and reservoirs remains the mainstay water resource for Australian cities, towns and industry. Overwhelmingly, that water is collected from forested catchments where the water balance of forest stands is dominated by the amount of water used by trees. Characterising tree water use, its response to changing climatic and nocturnal conditions, and other aspects of sta ....Testing climatic, physiological and hydrological assumptions underpinning water yield from montane forests. Water collected in dams and reservoirs remains the mainstay water resource for Australian cities, towns and industry. Overwhelmingly, that water is collected from forested catchments where the water balance of forest stands is dominated by the amount of water used by trees. Characterising tree water use, its response to changing climatic and nocturnal conditions, and other aspects of stand hydrology, are crucial to our ability to predict and model future water yields. Working in the Cotter catchment near Canberra and the upper Kiewa catchment in north-east Victoria, we aim to help the agencies responsible for water and catchment management to improve the security of their forecasts of water yield and their on-ground management. Read moreRead less
The use of molecular sponges to inhibit small Ribonucleic acid activity in plants. The deletion of gene activity is the most powerful way to understand gene function; however for genes encoding small Ribonucleic acids (RNAs) no current methodology can efficiently achieve this. Here, we aim to develop a gene silencing technology for small RNA encoding genes, which can be utilised to determine their function and used for biotechnological applications.
Leaf respiration under drought: a global perspective. Predicting future net carbon exchange is necessary for better management of vegetation resources by Australia. Incorporating the responses of plant respiration to drought and temperature is crucial for predicting future rates of net carbon exchange. Using laboratory and field studies, this research will develop an understanding of how water availability and temperature impact on plant respiration of a broad range of economically important and ....Leaf respiration under drought: a global perspective. Predicting future net carbon exchange is necessary for better management of vegetation resources by Australia. Incorporating the responses of plant respiration to drought and temperature is crucial for predicting future rates of net carbon exchange. Using laboratory and field studies, this research will develop an understanding of how water availability and temperature impact on plant respiration of a broad range of economically important and ecologically relevant plant species. Equations will be formulated that will improve how modellers calculate drought-dependent variations in plant respiration (and thus plant productivity), thereby improving predictions for a future, warmer world.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE140101143
Funder
Australian Research Council
Funding Amount
$395,220.00
Summary
An electrophysiological insight into the role of chloroplasts in stomatal drought signalling. Drought implies a range of stresses with which plants have to cope. Drought is not only a domestic issue for Australian people who live in this dry continent but also significantly affects global food supply and drives climate change. Stomata guard cells exert major controls on global water and carbon cycles. Although the total stomatal pore area may be five per cent of a leaf surface, transpirational w ....An electrophysiological insight into the role of chloroplasts in stomatal drought signalling. Drought implies a range of stresses with which plants have to cope. Drought is not only a domestic issue for Australian people who live in this dry continent but also significantly affects global food supply and drives climate change. Stomata guard cells exert major controls on global water and carbon cycles. Although the total stomatal pore area may be five per cent of a leaf surface, transpirational water loss through the stomata contributes to 70 per cent of total agricultural water usage. As an environmental signal, drought regulates stomatal movements. This project seeks to understand the mechanisms of drought induced molecular retrograde signals and their regulation over stomata. The outcomes will aid the development of strategies for reducing water loss from crops.Read moreRead less
Avoiding coral bleaching: investigation into the repair of damaged photosynthetic machinery in symbiotic algae (symbiodinium) within corals. Photosynthesis in symbiotic algae within corals is essential for a healthy alga-coral symbiotic relationship. This project will provide new insights into how symbiotic algae maintain higher photosynthetic performance in corals through elucidating the mechanism associated with the repair of photodamaged photosynthetic machinery.
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