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Molecular analysis of photosynthetically-linked, active CO2 uptake and CO2 signal transduction by cyanobacteria (blue-green algae). Cyanobacteria (blue-green algae) have evolved a very efficient means of capturing and concentrating CO2 for photosynthetic fixation into sugars, the basic building blocks for cell growth. This process is dependent on the operation of several unique, active uptake systems for CO2 and HCO3-, with their genetic expression regulated by CO2 supply. This proposal will cap ....Molecular analysis of photosynthetically-linked, active CO2 uptake and CO2 signal transduction by cyanobacteria (blue-green algae). Cyanobacteria (blue-green algae) have evolved a very efficient means of capturing and concentrating CO2 for photosynthetic fixation into sugars, the basic building blocks for cell growth. This process is dependent on the operation of several unique, active uptake systems for CO2 and HCO3-, with their genetic expression regulated by CO2 supply. This proposal will capitalize on our progress in describing the functional genetics of this process and aims to elucidate the mechanism of active CO2 uptake and the way that cells sense the ambient CO2 concentration. The information gained is likely to be useful for designing improved crops.Read moreRead less
Photosynthetically active bicarbonate transporters from cyanobacteria & their rational redesign for application in engineered crops that use less water. Marine blue-green algae are critical components of global primary productivity and fisheries productivity but CO2 acquisition processes in these organisms are poorly understood. Our aim is to determine the protein structure and regulatory controls present in two classes of cyanobacterial bicarbonate transporters that are required for efficient p ....Photosynthetically active bicarbonate transporters from cyanobacteria & their rational redesign for application in engineered crops that use less water. Marine blue-green algae are critical components of global primary productivity and fisheries productivity but CO2 acquisition processes in these organisms are poorly understood. Our aim is to determine the protein structure and regulatory controls present in two classes of cyanobacterial bicarbonate transporters that are required for efficient photosynthesis. This information is now critical to the our goal of redesigning these bicarbonate transporters so they will be functional in plants, thereby contributing to the applied objective of engineering crop plants that could produce good grain yields with reduced water requirements.Read moreRead less
A novel method of broad-acre weed seedbank management using a naturally occuring germination stimulant. The discovery of a novel butenolide that promotes seed germination has potential to provide significant economic benefits for Australia's agricultural sector, providing a vehicle to move towards minimum-weed agricultural systems achieved through broad-acre stimulation of the weed seedbank. Our aim is for butenolide to promote uniform release of weed seed dormancy, increased germination, and gr ....A novel method of broad-acre weed seedbank management using a naturally occuring germination stimulant. The discovery of a novel butenolide that promotes seed germination has potential to provide significant economic benefits for Australia's agricultural sector, providing a vehicle to move towards minimum-weed agricultural systems achieved through broad-acre stimulation of the weed seedbank. Our aim is for butenolide to promote uniform release of weed seed dormancy, increased germination, and greater synchrony in early stage seedling growth and thus more effective knock-down following herbicide applications.Read moreRead less
Mechanisms and manipulation of seed dormancy maintenance in annual ryegrass and other weed species. A better understanding of seed dormancy in annual ryegrass will lead to a greater variety of management options for removal of this weed from cropping zones, focusing on diminishing the weed seed bank. Additionally, the knowledge gained from the study of ryegrass could be applied to native species in terms of optimising germination of difficult species and conservation of seeds of rare species.
Functional genomics approaches to the mechanisms of starch mobilisation in Arabidopsis. Starch is a key carbon and energy reserve that underpins plant growth. This in turn underpins much of Australia's $60 billion agriculture industry. Starch also provides most of the calories in the human diet and is a renewable commodity supporting manufacturing industries. Dependence of society on starch will increase as it becomes used more for novel materials and for bio-ethanol production, which in turn w ....Functional genomics approaches to the mechanisms of starch mobilisation in Arabidopsis. Starch is a key carbon and energy reserve that underpins plant growth. This in turn underpins much of Australia's $60 billion agriculture industry. Starch also provides most of the calories in the human diet and is a renewable commodity supporting manufacturing industries. Dependence of society on starch will increase as it becomes used more for novel materials and for bio-ethanol production, which in turn will create new jobs in the rural economy. A major quality problem in cereal grain is pre-harvest starch breakdown caused by warm wet weather triggering events associated with germination. By understanding starch metabolism in plants we will be better able to manage and enhance growth of crop plants, starch production and seed quality.Read moreRead less
The response of mitochondria to oxidative stress in plants. Crops encounter many situations in their environment which place them under stress. Reactive oxygen molecules produced in these situations act as messengers to trigger defence mechanisms but also cause cellular damage. Mitochondria are the subcellular compartments involved in energy production and are essential for plant development and growth. However, they also have been implicated in the response of plants to stress and pathogen atta ....The response of mitochondria to oxidative stress in plants. Crops encounter many situations in their environment which place them under stress. Reactive oxygen molecules produced in these situations act as messengers to trigger defence mechanisms but also cause cellular damage. Mitochondria are the subcellular compartments involved in energy production and are essential for plant development and growth. However, they also have been implicated in the response of plants to stress and pathogen attack, and in production of reactive oxygen molecules. This proposal seeks to investigate how mitochondria are involved in these processes, focusing on the role of terminal oxidases. Potential outcomes include crops better able to cope with environmental stress.Read moreRead less
Dual-targeting of proteins and its role in coordinating organelle functions in plants. Innovative agricultural solutions in Australia's future will be built on understanding and manipulating the expression of groups of genes to influence whole plant phenotypes providing more robust plants and high value plant products. Plant energy organelles are central components in plant metabolism, their coordination by processes such as dual-targeting has potential to modify germination characteristics, ear ....Dual-targeting of proteins and its role in coordinating organelle functions in plants. Innovative agricultural solutions in Australia's future will be built on understanding and manipulating the expression of groups of genes to influence whole plant phenotypes providing more robust plants and high value plant products. Plant energy organelles are central components in plant metabolism, their coordination by processes such as dual-targeting has potential to modify germination characteristics, early seedling vigour, and stress tolerance. Studying energy organelles could generate valuable intellectual property to be applied within Australia's large plant-based industries and at the same time provide a rich intellectual environment for the training of research students and postdoctoral researchers.Read moreRead less
Using defined biotic and abiotic stimuli to dissect patterns of gene expression and protein accumulation that specify root architecture. Root morphogenesis is fundamental to agriculture and valuable for investigating the informational networks of genes, proteins and metabolites that control root growth and plant development. Root systems vary widely both within and between species. Root morphology is directed by a basic genetic program that is influenced by environmental factors to provide an e ....Using defined biotic and abiotic stimuli to dissect patterns of gene expression and protein accumulation that specify root architecture. Root morphogenesis is fundamental to agriculture and valuable for investigating the informational networks of genes, proteins and metabolites that control root growth and plant development. Root systems vary widely both within and between species. Root morphology is directed by a basic genetic program that is influenced by environmental factors to provide an enormous "phenotypic plasticity". This project will use two model plant systems to investigate how different external signals are "translated" by the plant into different developmental regimes. This knowledge is crucial to understanding how the plasticity of root development is modulated in response to changing environmental factors.Read moreRead less
The role of changes to the proteome in the signalling of stress response in plant mitochondria. Innovative agricultural solutions in Australia's harsh climate will be built on manipulating the expression of groups of genes and understanding how the proteins they encode operate to influence whole plant phenotypes under stress to provide more robust plants and improved plant products. Mitochondria are central components in plant metabolism. Stabilizing their function during stress has the potentia ....The role of changes to the proteome in the signalling of stress response in plant mitochondria. Innovative agricultural solutions in Australia's harsh climate will be built on manipulating the expression of groups of genes and understanding how the proteins they encode operate to influence whole plant phenotypes under stress to provide more robust plants and improved plant products. Mitochondria are central components in plant metabolism. Stabilizing their function during stress has the potential to modify germination characteristics, early seedling vigour, and stress tolerance. Studying plant mitochondria supports the generation of intellectual property to be applied within Australia's plant-based industries and at the same time provide a rich intellectual environment for the training of students and researchers.Read moreRead less
Special Research Initiatives - Grant ID: SR0354715
Funder
Australian Research Council
Funding Amount
$40,000.00
Summary
The Australian Plant Nutriomics Network. The Australian Plant Nutriomics Network will link Australian scientists investigating aspects of the plant nutriome - the summation of processes that deliver nutrients and water from soil to plants. The network will establish a coordinated approach to understanding genes, proteins and metabolites involved in element acquisition and how their functions are linked to soil conditions to maximise food quality and overcome soil environmental challenges. Inter ....The Australian Plant Nutriomics Network. The Australian Plant Nutriomics Network will link Australian scientists investigating aspects of the plant nutriome - the summation of processes that deliver nutrients and water from soil to plants. The network will establish a coordinated approach to understanding genes, proteins and metabolites involved in element acquisition and how their functions are linked to soil conditions to maximise food quality and overcome soil environmental challenges. International articulation will ensure information exchange and enhance postgraduate and postdoctoral training by reciprocal visits and focused workshops. A major goal will be a strategy to integrate research using a complex systems approach to problems.Read moreRead less