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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
Discovery Early Career Researcher Award - Grant ID: DE160100636
Funder
Australian Research Council
Funding Amount
$376,300.00
Summary
The role of marine microbes in the global carbon cycle. This project aims to unravel microbiological processes in the ocean to help quantify the ecosystem services carried out by microbes that support our economy and environment. By recycling vital nutrients, microbes form the basis of the marine food web. In Australia, their contributions support fisheries worth $4.2 billion. Their role in carbon cycling also controls our climate. Yet, their direct productivity remains unquantified. Technical l ....The role of marine microbes in the global carbon cycle. This project aims to unravel microbiological processes in the ocean to help quantify the ecosystem services carried out by microbes that support our economy and environment. By recycling vital nutrients, microbes form the basis of the marine food web. In Australia, their contributions support fisheries worth $4.2 billion. Their role in carbon cycling also controls our climate. Yet, their direct productivity remains unquantified. Technical limitations have restricted our ability to identify the key microbes most responsible for ocean carbon cycling, and to measure their impact. This project plans to combine new approaches in microfluidics, chemistry and oceanography to quantify carbon uptake by individual microbes and provide new understanding of microbe-mediated chemical cycling processes.Read moreRead less
New tools to decipher, predict and manage pacific oyster mortality episodes. This project aims to unite cutting-edge genomic and molecular biological tools with novel quantitative modelling analyses to identify the mechanisms behind oyster disease events. Oyster farming contributes almost $100 million to the Australian economy each year and is a cornerstone of coastal communities, but has been decimated by diseases that threaten this important primary industry. While some causative pathogens hav ....New tools to decipher, predict and manage pacific oyster mortality episodes. This project aims to unite cutting-edge genomic and molecular biological tools with novel quantitative modelling analyses to identify the mechanisms behind oyster disease events. Oyster farming contributes almost $100 million to the Australian economy each year and is a cornerstone of coastal communities, but has been decimated by diseases that threaten this important primary industry. While some causative pathogens have been identified, the environmental catalysts of oyster disease remain a mystery. The expected outcome of this project is an innovative coupling of tools that provides new capacity to forecast disease events, delivering the Australian oyster industry a powerful platform to predict, manage and prevent costly disease outbreaks. By identifying environmental thresholds and oyster disease danger periods, an expected outcome of this project is the development of new oyster farming strategies aimed at avoiding multi-million dollar losses associated with disease outbreaks.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE170100525
Funder
Australian Research Council
Funding Amount
$372,000.00
Summary
Mucus control: Applying concepts from bacteriophage-mucus interactions. This project aims to examine how mucus-adherent bacteriophage interact with bacteria in mucus as a mechanism to manipulate microbiomes. Bacterial infections at mucosal surfaces in animals are a serious global health threat. Traditionally antibiotics have been used to curb mucosal infections, but antibiotic resistance means new therapies are urgently needed. Bacteriophage – viruses that infect bacteria – can kill bacteria and ....Mucus control: Applying concepts from bacteriophage-mucus interactions. This project aims to examine how mucus-adherent bacteriophage interact with bacteria in mucus as a mechanism to manipulate microbiomes. Bacterial infections at mucosal surfaces in animals are a serious global health threat. Traditionally antibiotics have been used to curb mucosal infections, but antibiotic resistance means new therapies are urgently needed. Bacteriophage – viruses that infect bacteria – can kill bacteria and might provide a layer of antimicrobial immunity in animal mucus. The anticipated outcomes are resolving how bacteriophage control bacteria within mucus, and applying concepts to bioengineer mucosal microbiomes.Read moreRead less
Why certain viruses don't get along in mosquitoes. The molecular mechanism. The overall goal of this project is to obtain an understanding of how certain insect-only viruses make mosquitoes incapable of transmitting diseases. These viruses, called insect-specific flaviviruses, can be employed as biocontrol agents for mosquito-borne human and veterinary diseases. However as it is currently unknown how exactly they affect mosquitoes, the safety and efficacy of their use can't be predicted. The pro ....Why certain viruses don't get along in mosquitoes. The molecular mechanism. The overall goal of this project is to obtain an understanding of how certain insect-only viruses make mosquitoes incapable of transmitting diseases. These viruses, called insect-specific flaviviruses, can be employed as biocontrol agents for mosquito-borne human and veterinary diseases. However as it is currently unknown how exactly they affect mosquitoes, the safety and efficacy of their use can't be predicted. The proposed project will dissect the very intricate mechanisms of interactions between insect-specific flaviviruses and mosquitoes and explain how exactly they prevent disease transmission. It should generate novel fundamental knowledge, implement innovative methodologies and provide training for students and junior scientist. Read moreRead less
The Role of the Single-Cell Environment in Microbial Invasion. This project aims to use a single-cell approach to develop a quantitative analysis of single-cell interactions to advance our understanding of complex bacterial behaviour fundamental to ecology, industry, technology and disease. Bacteria are ubiquitous on Earth and play key roles in nutrient cycles, biogeochemistry, pathogenesis, symbiosis and bioremediation among other processes. They exhibit complex behaviour and continuously invad ....The Role of the Single-Cell Environment in Microbial Invasion. This project aims to use a single-cell approach to develop a quantitative analysis of single-cell interactions to advance our understanding of complex bacterial behaviour fundamental to ecology, industry, technology and disease. Bacteria are ubiquitous on Earth and play key roles in nutrient cycles, biogeochemistry, pathogenesis, symbiosis and bioremediation among other processes. They exhibit complex behaviour and continuously invade animals, plants and new habitats. These behaviours are poorly understood in natural communities.Read moreRead less
Bacterial polycyclic aromatic hydrocarbon transport and degradation. This project aims to investigate the molecular processes underpinning the degradation of polycyclic aromatic hydrocarbons (PAHs) by bacteria. PAHs are persistent environmental contaminants linked to several human diseases, including cancer. Bacteria capable of degrading PAHs could be used to naturally and effectively reduce environmental PAH loads to below safe levels. The project will apply techniques in functional genomics an ....Bacterial polycyclic aromatic hydrocarbon transport and degradation. This project aims to investigate the molecular processes underpinning the degradation of polycyclic aromatic hydrocarbons (PAHs) by bacteria. PAHs are persistent environmental contaminants linked to several human diseases, including cancer. Bacteria capable of degrading PAHs could be used to naturally and effectively reduce environmental PAH loads to below safe levels. The project will apply techniques in functional genomics and biochemistry to help define the ways that PAHs are taken up from the environment by bacteria, their fate within bacterial cells, and the ways that bacteria overcome the inherent toxicity of PAHs. The knowledge generated is expected to enhance our capacity to rationally deploy bacteria for PAH degradation.Read moreRead less
Defining how inter-bacterial symbioses regulate aquatic ecosystem health. This project will determine how ecological relationships among aquatic bacteria govern the health of Australia’s marine and freshwater environments. Cyanobacteria support aquatic ecosystem productivity, but can have detrimental effects when they form harmful blooms, although the factors governing the balance of these contrasting impacts are largely undefined. By coupling sophisticated approaches including genomics, phenomi ....Defining how inter-bacterial symbioses regulate aquatic ecosystem health. This project will determine how ecological relationships among aquatic bacteria govern the health of Australia’s marine and freshwater environments. Cyanobacteria support aquatic ecosystem productivity, but can have detrimental effects when they form harmful blooms, although the factors governing the balance of these contrasting impacts are largely undefined. By coupling sophisticated approaches including genomics, phenomics, and microfluidics to examine how symbioses with other bacteria influence the growth and function of important species of cyanobacteria, this research will elucidate the importance of an over-looked factor in controlling the productivity, health and value of Australia’s aquatic estate.Read moreRead less
Causes and consequences of disease in the habitat forming seaweed Ecklonia radiata. Despite compelling arguments for the increasing importance of disease as a key structuring force in marine communities, we know little about the causes or broad impact of disease for most natural marine systems. This is particularly true for kelp forests, the dominant community type on temperate rocky shores. This project will integrate field ecology with microbiology and modern environmental gene sequencing tech ....Causes and consequences of disease in the habitat forming seaweed Ecklonia radiata. Despite compelling arguments for the increasing importance of disease as a key structuring force in marine communities, we know little about the causes or broad impact of disease for most natural marine systems. This is particularly true for kelp forests, the dominant community type on temperate rocky shores. This project will integrate field ecology with microbiology and modern environmental gene sequencing techniques to characterise the frequency, causative agents and impact of disease on Ecklonia radiata, the dominant seaweed in Australia. This project will further investigate how environmental conditions, including human impacts, modulate disease in this key, habitat forming seaweed.Read moreRead less
Effect of predation on virulence traits of opportunistic pathogens. The project aims to determine if increased fitness of bacteria in animal or human hosts (increased virulence) can occur due to indirect rather than direct selective pressure, particularly pressure on bacteria arising from predation by protozoa. Protozoa feed on many pathogenic bacteria (e.g. those that cause cholera and chronic infections) in the ocean, and warming oceans are predicted to increase predation. Knowing the effect o ....Effect of predation on virulence traits of opportunistic pathogens. The project aims to determine if increased fitness of bacteria in animal or human hosts (increased virulence) can occur due to indirect rather than direct selective pressure, particularly pressure on bacteria arising from predation by protozoa. Protozoa feed on many pathogenic bacteria (e.g. those that cause cholera and chronic infections) in the ocean, and warming oceans are predicted to increase predation. Knowing the effect of warming oceans on marine bacteria and the emergence of virulence in bacteria that are subject to predation in the environment can inform design of tools for monitoring the risk of infection outbreaks. Benefits would be realised by academic researchers, clinicians and policy-makers interested in optimising the tracking of infection threats.Read moreRead less