ARC Centre of Excellence - In Plant Energy Biology (CPEB). Plant cell metabolism underlies the synthesis of important products in crops, and subtle changes in metabolism can enhance germination rates, early seedling vigour, biomass/yield, and tolerance to harsh environments. Research in CPEB will focus on control of this metabolism. Its expertise will enhance Australia's participation in major international research efforts directly relevant to sustainable agriculture in a country with fragile/ ....ARC Centre of Excellence - In Plant Energy Biology (CPEB). Plant cell metabolism underlies the synthesis of important products in crops, and subtle changes in metabolism can enhance germination rates, early seedling vigour, biomass/yield, and tolerance to harsh environments. Research in CPEB will focus on control of this metabolism. Its expertise will enhance Australia's participation in major international research efforts directly relevant to sustainable agriculture in a country with fragile/degrading ecosystems. The research will provide new approaches for enhancing quality metabolite traits important for human health. It will further strengthen our international leadership in plant energy science, and will strengthen Australia's research training in systems biology to influence plant function.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE160100804
Funder
Australian Research Council
Funding Amount
$370,000.00
Summary
Controlling chloride in plants. This project aims to discover novel components that control how plants acquire and manage chloride. Chloride is one of the two ions that commonly cause salt stress, which is a major threat to Australia’s agriculture. Regions affected by salinity are increasing worldwide due to changing weather patterns and poor land management. Knowledge of plant chloride management is underdeveloped, despite the reduction in crop yield caused by high chloride accumulation. The an ....Controlling chloride in plants. This project aims to discover novel components that control how plants acquire and manage chloride. Chloride is one of the two ions that commonly cause salt stress, which is a major threat to Australia’s agriculture. Regions affected by salinity are increasing worldwide due to changing weather patterns and poor land management. Knowledge of plant chloride management is underdeveloped, despite the reduction in crop yield caused by high chloride accumulation. The anticipated outcome of this project will inform strategies aimed at selecting for optimised chloride management traits to generate crops with improved yield.Read moreRead less
Development and regulation of thermogenesis in thermoregulating flowers. Flowers of certain primitive plants produce enough heat to raise their temperatures up to 40 C above the air, and regulate it at a nearly constant level. Like warm-blooded mammals, the flowers increase heat production as environmental temperature falls. However, they thermoregulate on a cellular level, unlike mammals with their complex nervous system. We aim to elucidate the mechanisms involved in regulation of heat-prod ....Development and regulation of thermogenesis in thermoregulating flowers. Flowers of certain primitive plants produce enough heat to raise their temperatures up to 40 C above the air, and regulate it at a nearly constant level. Like warm-blooded mammals, the flowers increase heat production as environmental temperature falls. However, they thermoregulate on a cellular level, unlike mammals with their complex nervous system. We aim to elucidate the mechanisms involved in regulation of heat-production, with molecular, biochemical and stable isotope techniques. We will investigate spatial and temporal patterns of gene expression and activity of putative regulatory enzymes. The results will have implications for human physiology and agriculture.Read moreRead less
Calcium compartmentation in leaves: testing an integrated model of water and calcium transport with cell specific functional genomics. Calcium is a vital nutrient to animals and humans and its storage in vegetation is important for its accessibility. We believe this storage is linked to water flow in the leaf by a novel mechanism. This project will provide fundamental understanding of the cell type-specific processes involved in calcium storage and water flow in plants. High calibre PhD and Hono ....Calcium compartmentation in leaves: testing an integrated model of water and calcium transport with cell specific functional genomics. Calcium is a vital nutrient to animals and humans and its storage in vegetation is important for its accessibility. We believe this storage is linked to water flow in the leaf by a novel mechanism. This project will provide fundamental understanding of the cell type-specific processes involved in calcium storage and water flow in plants. High calibre PhD and Honours students will be educated to maintain the momentum of international excellence within Australia in the field of plant nutrient relations. The increase in understanding will allow future work to improve calcium availability and water use by plants to the benefit of agricultural productivity and quality of life.Read moreRead less
IMPROVING NITROGEN USE EFFICIENCY IN CROP PLANTS: ROLE OF THE AMMONIUM TRANSPORT FAMILY AMT. Improving nitrogen use efficiency in crop plants will reduce the use of environmentally damaging nitrogen fertilisers that threaten through leaching the sustainability of Australia's agricultural sector and local water ecosystems. Plants contain genes that encode transport proteins required for the uptake of nitrogen (ammonium and nitrate) from the soil. We will identify the in planta activity of the A ....IMPROVING NITROGEN USE EFFICIENCY IN CROP PLANTS: ROLE OF THE AMMONIUM TRANSPORT FAMILY AMT. Improving nitrogen use efficiency in crop plants will reduce the use of environmentally damaging nitrogen fertilisers that threaten through leaching the sustainability of Australia's agricultural sector and local water ecosystems. Plants contain genes that encode transport proteins required for the uptake of nitrogen (ammonium and nitrate) from the soil. We will identify the in planta activity of the AMT family of ammonium transporters and associated signalling pathways which control the uptake and assimilation of ammonium in plants. This project will confirm the mechanisms involved in ammonium uptake from the soil and lead to the development of ammonium-nitrogen efficient crop plants.Read moreRead less
Targeted analysis of the arbuscular mycorrhizal symbiosis phenome in a model host, tomato. We will capitalise on our previous discovery of novel phenotypic variation in arbuscular mycorrhizas in mutant and wild-type tomato, to explore development and function of the symbiosis at the molecular-genetic level. We will clone and sequence the gene responsible for mycorrhiza-defective phenotypes to provide inferences on function and relations with other genes. We will determine if plant defence blocks ....Targeted analysis of the arbuscular mycorrhizal symbiosis phenome in a model host, tomato. We will capitalise on our previous discovery of novel phenotypic variation in arbuscular mycorrhizas in mutant and wild-type tomato, to explore development and function of the symbiosis at the molecular-genetic level. We will clone and sequence the gene responsible for mycorrhiza-defective phenotypes to provide inferences on function and relations with other genes. We will determine if plant defence blocks fungal colonisation in the mutant and/or varies with different wild-type phenotypes and explore molecular mechanisms of nutrient transfer from fungus to plant in relation to phenotypic diversity. The project will provide new insights into genome/phenome interactions controlling this widespread beneficial symbiosis.Read moreRead less
Finding the missing links in salt and water transport in plants. Grain crops and horticultural plants use proteins called aquaporins to move water across cell membranes, but a group of these proteins can also transport some important nutrient ions as well as toxic sodium ions. This project aims to reveal the molecular pathways that regulate water and ion transport via aquaporins using advanced techniques in biophysics and molecular biology. These results will provide novel insights into how plan ....Finding the missing links in salt and water transport in plants. Grain crops and horticultural plants use proteins called aquaporins to move water across cell membranes, but a group of these proteins can also transport some important nutrient ions as well as toxic sodium ions. This project aims to reveal the molecular pathways that regulate water and ion transport via aquaporins using advanced techniques in biophysics and molecular biology. These results will provide novel insights into how plants coordinate and adapt to changing water and salt conditions, addressing a missing link in how ions and water move in and out of plant vacuoles. Benefits include an expanded, innovative range of targets for plant breeding programs to improve plant productivity in our changing climate.Read moreRead less
How SEP-like genes determine cereal inflorescence architecture. This project aims to understand the morphological diversity of inflorescence architecture between cereal crop species. To do so, this project will identify functions and analyse the regulatory networks of conserved SEPALLATA genes (SEPs). This will enable them to determine cereal inflorescence morphogenesis of rice (branching) and barley (non-branching), representing the most important cereals. Identifying and understanding rice and ....How SEP-like genes determine cereal inflorescence architecture. This project aims to understand the morphological diversity of inflorescence architecture between cereal crop species. To do so, this project will identify functions and analyse the regulatory networks of conserved SEPALLATA genes (SEPs). This will enable them to determine cereal inflorescence morphogenesis of rice (branching) and barley (non-branching), representing the most important cereals. Identifying and understanding rice and barley SEPs, their direct targets and interactors, and how they regulate inflorescence branches and spikelets in both species is expected to provide evolutionary and developmental insights and targets to improve for crop yield. A molecular understanding of the regulatory network that underpins inflorescence shape and grain number will advance fundamental biology, and could form the basis for significant yield improvements by manipulating key points in the developmental pathway.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE170100346
Funder
Australian Research Council
Funding Amount
$372,000.00
Summary
Improving salt tolerance by optimising ion transport in chloroplasts. This project aims to discover the ion transport mechanisms and their molecular origins in chloroplasts that differentiate halophytes from glycophytes, allowing halophytes to optimise photosynthesis during salt stress. Yield losses in crop plants are linked to the effects of salt stress on their chloroplasts, but some plants maintain growth and yield irrespective of high soil salinity. This project will use biophysics to charac ....Improving salt tolerance by optimising ion transport in chloroplasts. This project aims to discover the ion transport mechanisms and their molecular origins in chloroplasts that differentiate halophytes from glycophytes, allowing halophytes to optimise photosynthesis during salt stress. Yield losses in crop plants are linked to the effects of salt stress on their chloroplasts, but some plants maintain growth and yield irrespective of high soil salinity. This project will use biophysics to characterise mutants deficient in targeted chloroplast transporters, comparing a model glycophyte and closely related halophyte. The expected outcome of these fundamental molecular is salt-tolerant crop plants.Read moreRead less
Targeting chloroplasts to enhance crop salt tolerance. Yield losses in crop plants due to increasingly saline soils are linked to the effects of salt on chloroplasts. By comparing chloroplast water- and salt-transport mechanisms of closely related salt-loving and salt-sensitive plants, this Fellowships aims to discover how chloroplasts maintain function in saline conditions. Novel biophysics and molecular techniques will be used to characterise transporters in model plants, and proof-of-concept ....Targeting chloroplasts to enhance crop salt tolerance. Yield losses in crop plants due to increasingly saline soils are linked to the effects of salt on chloroplasts. By comparing chloroplast water- and salt-transport mechanisms of closely related salt-loving and salt-sensitive plants, this Fellowships aims to discover how chloroplasts maintain function in saline conditions. Novel biophysics and molecular techniques will be used to characterise transporters in model plants, and proof-of-concept complementation experiments aim to confer salt tolerance on sensitive plants. These fundamental insights are likely to lead to rapid, step-change improvements in salt tolerance, especially in agriculturally relevant crops, to benefit Australia’s agri-industry and ensure food security in the future.Read moreRead less