In touch with the environment: dissecting early tactile responses in plants. This project aims to identify the regulatory mechanisms that control touch-responses in plants. Although plants cannot relocate in the face of danger, they are able to sense mechanical manipulations from the environment. These could be caused by pathogens, herbivores, rain or even wind. This touch-responsiveness of plants is essential for pathogen resistance and for triggering architectural changes to overcome obstacles ....In touch with the environment: dissecting early tactile responses in plants. This project aims to identify the regulatory mechanisms that control touch-responses in plants. Although plants cannot relocate in the face of danger, they are able to sense mechanical manipulations from the environment. These could be caused by pathogens, herbivores, rain or even wind. This touch-responsiveness of plants is essential for pathogen resistance and for triggering architectural changes to overcome obstacles and prevent mechanical damage. Using a comprehensive tool set of genetics, genomics and proteomics, this project aims to identify the upstream regulators that control touch responses. Furthermore, it is expected to expand our understanding of the physiological impacts of touch-responses on growth and stress tolerance.Read moreRead less
Understanding the biological functions of the karrikin-responsive signaling system of plants in growth, development and responses to the environment. A new signalling system in plants, related to that of strigolactone hormones but evolutionarily more ancient and functionally distinct, has been discovered. It is defined by the Karrkin-Insensitive-2 (KAI2) protein discovered by its ability to confer responsiveness to karrikins from bushfires. The KAI2 system influences seed germination, and develo ....Understanding the biological functions of the karrikin-responsive signaling system of plants in growth, development and responses to the environment. A new signalling system in plants, related to that of strigolactone hormones but evolutionarily more ancient and functionally distinct, has been discovered. It is defined by the Karrkin-Insensitive-2 (KAI2) protein discovered by its ability to confer responsiveness to karrikins from bushfires. The KAI2 system influences seed germination, and development of seedlings, leaves and potentially roots. This project will use KAI2 mutants and transgenic plants to define the biological functions of KAI2 signalling, and its interactions with other signalling systems. New genes central to KAI2 signalling and responses will be identified for functional analysis. The research will reveal the significance of this new signalling system in plant biology. Read moreRead less
IDENTIFYING CONTROL ELEMENTS IN CHLOROPLAST GENE EXPRESSION. Energy from sunlight is captured by photosynthesis in plants, providing the basis for the terrestrial food chain. This process takes place in chloroplasts, subcellular structures that derived from photosynthetic bacteria a billion years ago. Chloroplasts have their own DNA, containing genes encoding the most important photosynthetic proteins. This project aims to provide the world’s best resources for the study of chloroplast genes. In ....IDENTIFYING CONTROL ELEMENTS IN CHLOROPLAST GENE EXPRESSION. Energy from sunlight is captured by photosynthesis in plants, providing the basis for the terrestrial food chain. This process takes place in chloroplasts, subcellular structures that derived from photosynthetic bacteria a billion years ago. Chloroplasts have their own DNA, containing genes encoding the most important photosynthetic proteins. This project aims to provide the world’s best resources for the study of chloroplast genes. In the process, we will discover how these important genes are regulated to provide photosynthetic proteins in the right amounts, in the right cells, at the right time. The knowledge and resources gained will facilitate improvement of photosynthetic function in future agricultural crops.Read moreRead less
Measuring protein turnover in vivo in plant mitochondria and chloroplasts to identify protease targets. This project plans to measure the rate at which proteins degrade inside plants by using stable isotopes of nitrogen and mass spectrometry analysis of isolated protein samples from different plant mutant lines. This will allow new insights into the in vivo role of specific proteases which are involved in regulating energy generating pathways in plant organelles and that are needed for light tol ....Measuring protein turnover in vivo in plant mitochondria and chloroplasts to identify protease targets. This project plans to measure the rate at which proteins degrade inside plants by using stable isotopes of nitrogen and mass spectrometry analysis of isolated protein samples from different plant mutant lines. This will allow new insights into the in vivo role of specific proteases which are involved in regulating energy generating pathways in plant organelles and that are needed for light tolerance, adaptation to day length, growth and normal leaf development. The new information will aid us to develop approaches to alter quality control of the plant proteome as a tool for engineering energy processes in plants.Read moreRead less
How do sunflowers make protein drugs in their seeds? We recently discovered in sunflower the origin of a small protein ring that chemists have used for a decade to base designed drugs upon. This project aims to know how sunflowers make it so we may manipulate other plants to manufacture ring-based drugs.
Buried treasure: bioactive plant seed proteins evolving inside hosts. This project aims to examine how evolution in plants shortcuts the creation of new proteins by burying one within another. Scientists now realise that new genes and proteins appear frequently. A recent discovery in plant seeds involves DNA sequence insertions in a gene that makes two proteins instead of one. This project will reveal a new family of buried seed proteins, determine the rules for burying them and search plants fo ....Buried treasure: bioactive plant seed proteins evolving inside hosts. This project aims to examine how evolution in plants shortcuts the creation of new proteins by burying one within another. Scientists now realise that new genes and proteins appear frequently. A recent discovery in plant seeds involves DNA sequence insertions in a gene that makes two proteins instead of one. This project will reveal a new family of buried seed proteins, determine the rules for burying them and search plants for new examples. The first examples from plants create strongly bioactive products so the ability to dig for similar plant events will reveal new and bioactive natural products with biomedical and biotechnology applications.Read moreRead less
Putting new herbicide targets on the table. This project aims to discover plant processes and plant proteins that can be the target for new herbicides. Australia's food security is being threatened by a rise in resistance to herbicides, the chemicals relied on to control weeds. In over 20 years a truly new herbicide has not appeared. This project aims to provide validated new targets to engage agrochemical industry and accelerate the rate farmers get tools to manage problematic weeds, the major ....Putting new herbicide targets on the table. This project aims to discover plant processes and plant proteins that can be the target for new herbicides. Australia's food security is being threatened by a rise in resistance to herbicides, the chemicals relied on to control weeds. In over 20 years a truly new herbicide has not appeared. This project aims to provide validated new targets to engage agrochemical industry and accelerate the rate farmers get tools to manage problematic weeds, the major yield penalty for both developed and developing world agriculture. The project expects enable effective collaboration with industry to develop new herbicides.Read moreRead less
How scissors learn to glue: the catalysis of ligation by proteases. This project proposes to study protein-cutting enzymes from plants that are drawn into biosyntheses where they paradoxically perform protein-joining (ligation) reactions. Enzymes are everywhere, from detergents to digestion to detoxifying drugs. Industry uses artificial evolution to improve enzymes or create enzymes with new activities. By exploring the changes that allowed one such cutting enzyme to ligate, the knowledge acquir ....How scissors learn to glue: the catalysis of ligation by proteases. This project proposes to study protein-cutting enzymes from plants that are drawn into biosyntheses where they paradoxically perform protein-joining (ligation) reactions. Enzymes are everywhere, from detergents to digestion to detoxifying drugs. Industry uses artificial evolution to improve enzymes or create enzymes with new activities. By exploring the changes that allowed one such cutting enzyme to ligate, the knowledge acquired may enable protein engineering to develop designer enzymes with enhanced or suppressed ligating ability. Although protein evolution can be studied with artificial systems, natural systems are extremely valuable. Insights from studying this natural evolution of ligation may test hypotheses developed with data from artificial evolution.Read moreRead less
A new and rapidly evolving class of plant peptides. The project will study a diverse class of drug-like mini-proteins that are thought to have emerged genetically over 12 million years ago. This project will explore why plants have kept making these mini-proteins for so long and whether it is the same reason the founding member of this mini-protein class is such a good drug.
Mitochondrial Retrograde Signalling in Plants – New Models and Analytical Approaches. Mitochondria are essential organelles involved in energy production and various metabolic and biosynthetic pathways in plant cells. Signals from mitochondria act to regulate nuclear gene expression to coordinate mitochondrial activity with cellular activity, which is called mitochondrial retrograde signalling (MRS). To date our knowledge of the pathways and components involved in MRS is limited to a single mode ....Mitochondrial Retrograde Signalling in Plants – New Models and Analytical Approaches. Mitochondria are essential organelles involved in energy production and various metabolic and biosynthetic pathways in plant cells. Signals from mitochondria act to regulate nuclear gene expression to coordinate mitochondrial activity with cellular activity, which is called mitochondrial retrograde signalling (MRS). To date our knowledge of the pathways and components involved in MRS is limited to a single model system. This proposal seeks to identify additional MRS pathways, characterise components of these pathways and the signals involved. This new knowledge can be used in translational research as a basis to breed plants with altered stress and growth properties.Read moreRead less