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REdefining metabolic Schemes and Pathways In plant leaf REspiration. Leaf respiration-related metabolism in terrestrial vegetation liberates considerable amounts of carbon dioxide, ammonia and hydrogen sulphide into the atmosphere. Such gaseous losses are detrimental to biomass production but respiration also sustains nutrient assimilation and biosyntheses. This project aims to describe flux patterns in respiratory metabolism and disentangle interactions with other pathways such as photorespirat ....REdefining metabolic Schemes and Pathways In plant leaf REspiration. Leaf respiration-related metabolism in terrestrial vegetation liberates considerable amounts of carbon dioxide, ammonia and hydrogen sulphide into the atmosphere. Such gaseous losses are detrimental to biomass production but respiration also sustains nutrient assimilation and biosyntheses. This project aims to describe flux patterns in respiratory metabolism and disentangle interactions with other pathways such as photorespiration and nitrogen assimilation. It will exploit stable isotopes to quantify metabolic partitioning and show coordination between major processes. It will establish key mechanisms by which respiration dictates plant carbon balance and contributes to identifying metabolic bottle-necks in plant primary production.Read moreRead less
Discovering the molecular mechanisms and origins of karrikin and strigolactone signalling in plants. Understanding how hormones control plant growth has transformed plant biology and driven major advances in crop production. This project will study genes responsible for the action of two new growth regulators, strigolactones and karrikins, and, by uncovering their action mechanisms, will obtain crucial knowledge to stimulate yet further advances in plant science.
Smoke-derived karrikins reveal a new pathway for plant development. This project aims to investigate a recently discovered signalling system in plants that requires an unknown hormone to regulate seed germination and seedling growth. Burning vegetation produces karrikins that promote seed germination by signalling through a recently identified plant protein. Plants do not make karrikins and impairments to this protein results in increased seed dormancy and abnormal leaf growth, suggesting karrik ....Smoke-derived karrikins reveal a new pathway for plant development. This project aims to investigate a recently discovered signalling system in plants that requires an unknown hormone to regulate seed germination and seedling growth. Burning vegetation produces karrikins that promote seed germination by signalling through a recently identified plant protein. Plants do not make karrikins and impairments to this protein results in increased seed dormancy and abnormal leaf growth, suggesting karrikins mimic an unknown plant hormone that regulates these aspects of plant development. The project aims to identify this phytohormone and elucidate its biosynthetic pathway. The identification of this new plant growth regulator would be a major advance for plant science and may create new opportunities in restoration ecology, weed control and food production.Read moreRead less
Farming in a biodiversity hotspot - harnessing native plants to reduce deleterious off-site phosphorus flows. Biodiversity hotspots that coexist with farmland are often threatened by movement of phosphorus off farmland into waterways and into vegetation adapted to low phosphorus soils. Strategic use of phosphorus-resistant native perennial plants may aid biodiversity preservation by retaining phosphorus in farmland soils.
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0989408
Funder
Australian Research Council
Funding Amount
$150,000.00
Summary
A multiple-ion membrane inlet mass spectrometer. There is a compelling need for a modern isotope-ratio mass spectrometer to facilitate a range of innovative studies of chemical and biochemical processes. Mass spectrometers operated with a thin permeable membrane over a vacuum inlet allow small gas molecules to be continuously monitored inside specific gas or liquid phase sample chambers. The proposed instrumentation will enable simultaneous and highly sensitive measurement of 10 different isot ....A multiple-ion membrane inlet mass spectrometer. There is a compelling need for a modern isotope-ratio mass spectrometer to facilitate a range of innovative studies of chemical and biochemical processes. Mass spectrometers operated with a thin permeable membrane over a vacuum inlet allow small gas molecules to be continuously monitored inside specific gas or liquid phase sample chambers. The proposed instrumentation will enable simultaneous and highly sensitive measurement of 10 different isotopic species and the capability for detection of hydrogen. This equipment will provide the many researchers and students with opportunities to determine isotopic signatures of isolated chemical reactions through to complex biochemical systems of whole living cells.Read moreRead less
The metabolic footprint of plants. Plant roots "leak" 5-10% of the C fixed in photosynthesis. Surprisingly, we have a limited understanding of which compounds leak from roots.This project will identify the compounds leaking from roots and explore their function in tolerance of biotic and abiotic stress and implications for soil respiration.
Is the extreme phosphate sensitivity found among Australian plants a consequence of their adaptation to a severely phosphate-limited environment? The phosphorus (P)-impoverished soils of south-western Australia have allowed the evolution of many plants that are amazingly efficient at retrieving P from dying tissues. This project will contribute to the understanding of the mechanism determining P efficiency and will contribute significantly to the development of crops that are less reliant on non ....Is the extreme phosphate sensitivity found among Australian plants a consequence of their adaptation to a severely phosphate-limited environment? The phosphorus (P)-impoverished soils of south-western Australia have allowed the evolution of many plants that are amazingly efficient at retrieving P from dying tissues. This project will contribute to the understanding of the mechanism determining P efficiency and will contribute significantly to the development of crops that are less reliant on non-renewable P fertilisers.Read moreRead less
The genes and pathways regulated by the AMYB80 network are involved in Arabidopsis pollen development. Tapetum is the inner layer of an anther essential for pollen formation. The project will study tapetal AtMYB80 network regulating pollen development. Knowledge of the network will be important in developing means to protect crop yields against cold and drought. Regulation of AtMYB80 activity is being used to create hybrid crops of high productivity.
The functional characterisation of a novel immune response in plants. This project aims to identify the role of pathogenicity-related-1 proteins in plants and characterise a new disease resistance pathway. By focusing on the interaction between key plant and pathogen proteins, this proposal seeks to advance the understanding of how the pathogen causes disease. The expected outcomes from these advances include the generation of new tools to manage plant diseases whilst building strong internation ....The functional characterisation of a novel immune response in plants. This project aims to identify the role of pathogenicity-related-1 proteins in plants and characterise a new disease resistance pathway. By focusing on the interaction between key plant and pathogen proteins, this proposal seeks to advance the understanding of how the pathogen causes disease. The expected outcomes from these advances include the generation of new tools to manage plant diseases whilst building strong international collaborations. This project should provide significant benefits for generating new leads for plant disease management leading to enhanced food security.Read moreRead less