Flexibility in the timing of parturition: the key to viviparity in lizards? Embryos of viviparous lizards usually gain adequate nutrients from yolk. Why then has placentotrophy evolved in some species, and what new opportunities has it opened up? The answer may lie in the advantages gained from flexibility in the timing of birth, made possible by supplementary transfer of storage lipids to embryos during gestation. We argue that this provides a pivotal opportunity for evolutionary divergence: so ....Flexibility in the timing of parturition: the key to viviparity in lizards? Embryos of viviparous lizards usually gain adequate nutrients from yolk. Why then has placentotrophy evolved in some species, and what new opportunities has it opened up? The answer may lie in the advantages gained from flexibility in the timing of birth, made possible by supplementary transfer of storage lipids to embryos during gestation. We argue that this provides a pivotal opportunity for evolutionary divergence: some alpine species exploit flexible parturition; other species replace optional placentotrophy with obligate transfer. Our unique experimental approach, using two well-researched clades of viviparous skinks, will result in new testable hypotheses about the evolution of viviparity.Read moreRead less
The role of leaf veins in vascular plant evolution. Leaves are continuously irrigated by a system of internal plumbing that defines their maximum photosynthetic output, and angiosperms are the most productive plants on earth largely by virtue of a uniquely efficient system of leaf plumbing. This project will identify how such an important modification of leaf water transport came to evolve.
Membrane transporters in oxidative stress signalling and tolerance in plants. Oxidative stress imposed by salinity and drought severely limits agricultural crop production, resulting in multibillion dollar losses to farmers. Australia is one of the driest continents, with a significant proportion of arable land affected by salinity. Thus, developing salt- and drought tolerant species is critical to minimise the impact of these stresses on crop production. This project will reveal specific ionic ....Membrane transporters in oxidative stress signalling and tolerance in plants. Oxidative stress imposed by salinity and drought severely limits agricultural crop production, resulting in multibillion dollar losses to farmers. Australia is one of the driest continents, with a significant proportion of arable land affected by salinity. Thus, developing salt- and drought tolerant species is critical to minimise the impact of these stresses on crop production. This project will reveal specific ionic mechanisms mediating reactive oxygen species signalling and tolerance in plants. This will help achieve the above goal by providing plant breeders with vital information on key genes controlling oxidative stress tolerance in plants. Read moreRead less
Coping with flooding: nutrient transport in oxygen-deprived roots. Flooding damages plants by reducing oxygen supply to roots. The project will study effects of low oxygen on nutrient transport by roots. Understanding root functioning during low oxygen will enhance knowledge of plant acclimation to soil water logging. The project will contribute to the National Goal of 'Responding to Climate Change and Variability'.
Discovery Early Career Researcher Award - Grant ID: DE140100946
Funder
Australian Research Council
Funding Amount
$394,561.00
Summary
410 million years of stomatal evolution: key innovations in the transition from passive valves to active pores. Central to the supremacy of seed plants was the evolution of active, metabolic control of the stomata; the pores that regulate both plant productivity and water loss. However, little is known about the transition from passive control of stomata in seedless plants to active stomatal control in seed plants. This project will identify the key physiological and genetic innovations that und ....410 million years of stomatal evolution: key innovations in the transition from passive valves to active pores. Central to the supremacy of seed plants was the evolution of active, metabolic control of the stomata; the pores that regulate both plant productivity and water loss. However, little is known about the transition from passive control of stomata in seedless plants to active stomatal control in seed plants. This project will identify the key physiological and genetic innovations that underpinned the evolution of stomatal control over the past 410 million years. Understanding these evolutionary innovations will offer important insights into stomatal function in seed plants, as well as informing models of global productivity and water use through time, with benefits for Australian agriculture and natural resource management.Read moreRead less
Genealogy and Topology: A Constellational Comparison of Nietzsche and Heidegger. This research is fundamental in character addressing basic questions about the nature and history of philosophy. It will have direct academic benefits in advancing disciplinary knowledge, in enhancing the reputation of Australian philosophy in Germany and internationally, and in promoting contact between Australian and German philosophers, but is also likely to have longer term benefits in furthering our understandi ....Genealogy and Topology: A Constellational Comparison of Nietzsche and Heidegger. This research is fundamental in character addressing basic questions about the nature and history of philosophy. It will have direct academic benefits in advancing disciplinary knowledge, in enhancing the reputation of Australian philosophy in Germany and internationally, and in promoting contact between Australian and German philosophers, but is also likely to have longer term benefits in furthering our understanding of the nature of concepts, and of conceptual creativity.Read moreRead less
Understanding plant uptake of organic and inorganic nitrogen for optimal fertiliser application in forestry. Nitrogen (N) in soils occurs in both organic and inorganic forms. Plants can take up inorganic N - nitrate and ammonium - but, on average, these account for only 5% of the soluble N in soils. Recent evidence suggests that plants may be able to tap into some of the 95% of N that occurs in organic forms. We will investigate the importance of organic N uptake for two plantation Eucalyptus sp ....Understanding plant uptake of organic and inorganic nitrogen for optimal fertiliser application in forestry. Nitrogen (N) in soils occurs in both organic and inorganic forms. Plants can take up inorganic N - nitrate and ammonium - but, on average, these account for only 5% of the soluble N in soils. Recent evidence suggests that plants may be able to tap into some of the 95% of N that occurs in organic forms. We will investigate the importance of organic N uptake for two plantation Eucalyptus species by tracing the uptake of different N forms by bacteria, fungi and eucalypts. This information will redefine what is meant by 'available N' and will guide the development of a new test for soil N status.Read moreRead less
Microfluidic models of the CNS: Understanding cells, circuits & synapses. Aims: We aim to develop new cell culture platforms to form defined networks of brain cells. These platforms will be used to determine the critical mechanisms underpinning central nervous system function.
Significance: The devices developed will enable an unprecedented capacity to monitor changes throughout a network, with analysis at the level of the synapse, cell and circuit.
Expected outcomes: We will advance knowledge ....Microfluidic models of the CNS: Understanding cells, circuits & synapses. Aims: We aim to develop new cell culture platforms to form defined networks of brain cells. These platforms will be used to determine the critical mechanisms underpinning central nervous system function.
Significance: The devices developed will enable an unprecedented capacity to monitor changes throughout a network, with analysis at the level of the synapse, cell and circuit.
Expected outcomes: We will advance knowledge regarding the function of the CNS and deliver complex human cellular systems, that have both discovery and commercial applications.
Benefit: These platforms will have subsequent application revealing the mechanisms underlying numerous neurological diseases, with capacity to upscale for rapid drug screening.
Read moreRead less
Regulation of seed development in grain legumes. The seeds of grain legumes are the edible portion of the crop, but it is not understood how seed size and composition are regulated. This project will determine the mechanisms by which plant hormones affect seed development, providing a basis for improving yields.
Discovery Indigenous Researchers Development - Grant ID: DI0667638
Funder
Australian Research Council
Funding Amount
$166,080.00
Summary
Brassinosteroids and Water Stresses. Water use has become a major factor affecting agricultural development in Australia. Therefore, it is important to develop new techniques to sustain crop production in today's climate. Developing a clearer understanding of brassinosteroids, their underlying role in water stresses and their interaction with known stress-related hormones, such as abscisic acid and ethylene, will eventually enable more effective and efficient manipulation of plant growth in wate ....Brassinosteroids and Water Stresses. Water use has become a major factor affecting agricultural development in Australia. Therefore, it is important to develop new techniques to sustain crop production in today's climate. Developing a clearer understanding of brassinosteroids, their underlying role in water stresses and their interaction with known stress-related hormones, such as abscisic acid and ethylene, will eventually enable more effective and efficient manipulation of plant growth in water stressed areas. This project has the added advantage of working with a legume, a group of plants that make a substantial contribution to the Australian economy. Our increased knowledge of legume development will help underpin future growth of this sector. Read moreRead less