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Role of rhizosphere microorganisms in growth of plants in soils with low P availability. The concentration of available phosphorus in many Australian soils is low compared to the requirement of plants and soil organisms. Plant genotypes differ in their capacity to grow at low P availability but the role of rhizosphere microorganisms in plant P uptake from such soils is largely unknown. We will determine the role of rhizosphere microorganisms in P solubilisation and mobilisation in different crop ....Role of rhizosphere microorganisms in growth of plants in soils with low P availability. The concentration of available phosphorus in many Australian soils is low compared to the requirement of plants and soil organisms. Plant genotypes differ in their capacity to grow at low P availability but the role of rhizosphere microorganisms in plant P uptake from such soils is largely unknown. We will determine the role of rhizosphere microorganisms in P solubilisation and mobilisation in different crop genotypes and native plant species in different Australian soils with low P availability. The results will give a comprehensive picture of the role of rhizosphere microbial ecology in phosphorus acquisition by crop and native plants.Read moreRead less
Exploring the genetic and functional diversity nexus in ericoid mycorrhizal and related symbioses. Epacrids are important components of the Australian flora and several are considered threatened, yet we know relatively little regarding the importance of ericoid mycorrhizal fungal diversity to their survival. The proposed work will provide essential information on the functional significance of ericoid mycorrhizal endophyte diversity in the growth and survival of epacrids. It will further lead to ....Exploring the genetic and functional diversity nexus in ericoid mycorrhizal and related symbioses. Epacrids are important components of the Australian flora and several are considered threatened, yet we know relatively little regarding the importance of ericoid mycorrhizal fungal diversity to their survival. The proposed work will provide essential information on the functional significance of ericoid mycorrhizal endophyte diversity in the growth and survival of epacrids. It will further lead to improved propagation of epacrids and better informed decisions for sustainable management of Australian native vegetation.Read moreRead less
Novel link between bacterial sugar metabolism and cell-to-cell signalling. This project aims to understand the role and function of the bacterial communication system that enables bacteria to form complex communities and alter phenotypic traits, essential for survival in their environment. Bacteria survive in their environmental niches by developing complex multicellular communities. Cell to cell communication, termed quorum sensing (QS), is critical for this process and is linked to their capac ....Novel link between bacterial sugar metabolism and cell-to-cell signalling. This project aims to understand the role and function of the bacterial communication system that enables bacteria to form complex communities and alter phenotypic traits, essential for survival in their environment. Bacteria survive in their environmental niches by developing complex multicellular communities. Cell to cell communication, termed quorum sensing (QS), is critical for this process and is linked to their capacity to detect and secrete small signalling molecules, autoinducers. This project will provide a new paradigm in bacterial adaptation through comprehensive characterisation of the Autoinducer-2 QS system. This knowledge will provide future opportunities for intervention in microbial infestation with broad potential benefits.Read moreRead less
The role of central carbon metabolism in cell cycle control in bacteria. Bacteria are simple organisms, yet we still do not understand how they coordinate their growth with their reproduction so faithfully, generation after generation, to produce viable newborn cells. The new discovery of a link between the food bacteria eat and the first stage of their cell division now provides the opportunity to elucidate how bacteria 'measure' their energy production to control their proliferation. This proj ....The role of central carbon metabolism in cell cycle control in bacteria. Bacteria are simple organisms, yet we still do not understand how they coordinate their growth with their reproduction so faithfully, generation after generation, to produce viable newborn cells. The new discovery of a link between the food bacteria eat and the first stage of their cell division now provides the opportunity to elucidate how bacteria 'measure' their energy production to control their proliferation. This project combines the latest technology with complementary expertise in bacterial cell division and metabolism. This should identify the mechanism that integrates these fundamental pathways in bacteria, crucial to both their survival and ability to cause infection.Read moreRead less
Identifying how bacterial cells find their middle: a new perspective. This project will reveal new information about how bacterial cells divide with high precision to ensure that each newborn cell contains the correct genetic material. The research uses frontier techniques, provides innovative training to young Australian researchers, and will identify new ways to treat infections caused by bacteria.
Discovery Early Career Researcher Award - Grant ID: DE230100542
Funder
Australian Research Council
Funding Amount
$454,741.00
Summary
Microbial life in the atmosphere. This project aims to resolve the nature and basis of microbial life in the atmosphere, the largest but most unexplored potential ecosystem on Earth. The atmosphere plays a role in transporting microbes, but our understanding of resident atmospheric microbial communities and their role in global atmospheric processes is minimal. Using cutting-edge molecular and biogeochemical approaches, this project aims to identify true microbial residents of the atmosphere, un ....Microbial life in the atmosphere. This project aims to resolve the nature and basis of microbial life in the atmosphere, the largest but most unexplored potential ecosystem on Earth. The atmosphere plays a role in transporting microbes, but our understanding of resident atmospheric microbial communities and their role in global atmospheric processes is minimal. Using cutting-edge molecular and biogeochemical approaches, this project aims to identify true microbial residents of the atmosphere, understand their mechanisms for survival in this environment and explore their role in seeding newly formed environments. The anticipated outcomes include fundamental knowledge on atmospheric microbial ecosystems, and their influence on global atmospheric processes.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE160100127
Funder
Australian Research Council
Funding Amount
$355,000.00
Summary
Superresolution fluorescence imaging in microbiology. Superresolution fluorescence imaging in microbiology:
This project involves the purchase of new, and upgrade of existing, fluorescence imaging tools to facilitate the study of intracellular processes in microbial systems at significantly higher spatial and temporal resolutions than hitherto possible. Visualisation of the structure and dynamics of intracellular molecular assemblies at maximal resolution is required to understand protein funct ....Superresolution fluorescence imaging in microbiology. Superresolution fluorescence imaging in microbiology:
This project involves the purchase of new, and upgrade of existing, fluorescence imaging tools to facilitate the study of intracellular processes in microbial systems at significantly higher spatial and temporal resolutions than hitherto possible. Visualisation of the structure and dynamics of intracellular molecular assemblies at maximal resolution is required to understand protein function inside living cells. The new equipment is designed to provide a fast super-resolution imaging system to study the intracellular dynamics of proteins in vitro and a super-resolution microscope to visualise structures and assemblies inside microbes with a resolution of tens of nanometres, putting in vitro biochemistry into the context of a living cell. Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE180100911
Funder
Australian Research Council
Funding Amount
$365,058.00
Summary
The mechanisms driving microbial navigation in marine systems. This project aims to apply advanced video-microscopy to characterise microbial motion at the single cell level, interrogating their navigational responses in precisely controlled physical and chemical conditions. Ocean carbon cycling is driven by the concerted action of marine microbes, but the fine-scale interactions between these microbes and their physical and chemical environments remains elusive. The project findings will unrave ....The mechanisms driving microbial navigation in marine systems. This project aims to apply advanced video-microscopy to characterise microbial motion at the single cell level, interrogating their navigational responses in precisely controlled physical and chemical conditions. Ocean carbon cycling is driven by the concerted action of marine microbes, but the fine-scale interactions between these microbes and their physical and chemical environments remains elusive. The project findings will unravel the fundamental processes governing microbial motion in real environments, and develop the mechanistic modelling tools required to make quantitative ecosystem-level predictions of how soil-atmosphere-water-marine systems respond in the face of environmental change.Read moreRead less
Quantitative Metagenomics. This project aims to revolutionize our view of the microbial world once more by transforming microbiome studies from relative counts of organisms to actual numbers of microbes. This project expects to impact all the microbiome studies that are being performed worldwide by unveiling the actual numbers of microbes. Expected outcomes of this project include new techniques to enumerate the number of bacteria in different environments and new approaches to measure gene expr ....Quantitative Metagenomics. This project aims to revolutionize our view of the microbial world once more by transforming microbiome studies from relative counts of organisms to actual numbers of microbes. This project expects to impact all the microbiome studies that are being performed worldwide by unveiling the actual numbers of microbes. Expected outcomes of this project include new techniques to enumerate the number of bacteria in different environments and new approaches to measure gene expression within individual bacteria in any environment that will be demonstrated with complex microbial communities. This should provide significant benefits because microbes affect every aspect of our lives and those effects are driven by how many microbes are present.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE140100963
Funder
Australian Research Council
Funding Amount
$395,220.00
Summary
Biofilms and quorum sensing in pneumococcal biology. Bacteria survive in their environmental niches by development of complex multicellular communities (biofilms), not by operating as individuals. Communication between bacteria is critical for biofilm formation, and is linked to their capacity to exchange DNA within and between species (competence). This is achieved by secretion and detection of small chemical signalling molecules (quorum sensing). Two such systems operate in the pneumococcus, a ....Biofilms and quorum sensing in pneumococcal biology. Bacteria survive in their environmental niches by development of complex multicellular communities (biofilms), not by operating as individuals. Communication between bacteria is critical for biofilm formation, and is linked to their capacity to exchange DNA within and between species (competence). This is achieved by secretion and detection of small chemical signalling molecules (quorum sensing). Two such systems operate in the pneumococcus, a model Gram-positive organism. This project aims to elucidate the mechanism whereby these quorum sensing systems interact and collaborate to regulate biofilm formation and competence, phenotypes critical for bacterial survival. This knowledge will enable future development of novel antimicrobials. Read moreRead less