A5064691239- Insect symbiosis and bacterial influences
- Insect-Plant Interactions and Control
- Insect behavior and control techniques
- Insect and Pesticide Research
- Plant and animal studies
- Forest Insect Ecology and Management
- Insect and Arachnid Ecology and Behavior
- Cocoa and Sweet Potato Agronomy
- Insect Utilization and Effects
- Entomopathogenic Microorganisms in Pest Control
- Plant responses to elevated CO2
- Plant Parasitism and Resistance
- Insect Pest Control Strategies
- Insect Resistance and Genetics
- Plant Pathogens and Fungal Diseases
- Ecology and Vegetation Dynamics Studies
- Plant Water Relations and Carbon Dynamics
- Phytoplasmas and Hemiptera pathogens
- Atmospheric chemistry and aerosols
- Genetic diversity and population structure
- Mycorrhizal Fungi and Plant Interactions
- Soil Carbon and Nitrogen Dynamics
- Demographic Trends and Gender Preferences
- Phytochemistry and biological activities of Ficus species
- Parasitic Diseases Research and Treatment
Western Sydney University
2016-2025
The University of Queensland
2003-2013
BOKU University
2002-2004
University of Crete
2004
University of Agricultural Sciences, Dharwad
2002
The complete sequence of the 1,267,782 bp genome Wolbachia pipientis wMel, an obligate intracellular bacteria Drosophila melanogaster, has been determined. Wolbachia, which are found in a variety invertebrate species, great interest due to their diverse interactions with different hosts, range from many forms reproductive parasitism mutualistic symbioses. Analysis wMel genome, particular phylogenomic comparisons other bacteria, revealed insights into biology and evolution general. For...
Wolbachia are ubiquitous inherited endosymbionts of invertebrates that invade host populations by modifying reproductive systems. However, some strains lack the ability to impose modification and yet still capable successfully invading populations. To explain this paradox, theory predicts such should provide a fitness benefit, but date none has been detected. Recently completed genome sequences different show these bacteria may have genetic machinery influence iron utilization hosts. Here we...
Biological control is the purposeful introduction of parasites, predators, and pathogens to reduce or suppress pest populations. Wolbachia are inherited bacteria arthropods that have recently attracted attention for their potential as new biocontrol agents. manipulate host reproduction by using several strategies, one which cytoplasmic incompatibility (CI) [Stouthamer, R., Breeuwer, J. A. & Hurst, G. D. (1999) Annu. Rev. Microbiol. 53, 71–102]. We established -infected lines medfly...
Symbiotic bacteria affect insect physiology and ecology. They may also mediate insecticide resistance within their hosts thereby impact pest vector control practices. Here, we document a novel mechanism of in which gut symbiont the tephritid fruit fly Bactrocera dorsalis enhances to organophosphate trichlorphon.We demonstrated that Citrobacter sp. (CF-BD) plays key role degradation trichlorphon. Based on comparative genomics analysis with other species, phosphatase hydrolase genes were...
Abstract The capacity for terrestrial ecosystems to sequester additional carbon (C) with rising CO 2 concentrations depends on soil nutrient availability 1,2 . Previous evidence suggested that mature forests growing phosphorus (P)-deprived soils had limited extra biomass under elevated (refs. 3–6 ), but uncertainty about ecosystem P cycling and its response represents a crucial bottleneck mechanistic prediction of the land C sink climate change 7 Here, by compiling first comprehensive budget...
Abstract The effects of anthropogenic climate change on biodiversity are well known for some high‐profile Australian marine systems, including coral bleaching and kelp forest devastation. Less well‐published the impacts being observed in terrestrial ecosystems, although ecological models have predicted substantial changes likely. Detecting attributing to factors is difficult due importance extreme conditions, noisy nature short‐term data collected with limited resources, complexities...
Abstract This article documents the addition of 512 microsatellite marker loci and nine pairs Single Nucleotide Polymorphism (SNP) sequencing primers to Molecular Ecology Resources Database. Loci were developed for following species: Alcippe morrisonia , Bashania fangiana, fargesii Chaetodon vagabundus Colletes floralis Coluber constrictor flaviventris Coptotermes gestroi Crotophaga major Cyprinella lutrensis Danaus plexippus Fagus grandifolia Falco tinnunculus Fletcherimyia fletcheri,...
Most strains of the widespread endosymbiotic bacterium Wolbachia pipientis are benign or behave as reproductive parasites. The pathogenic strain wMelPop is a striking exception, however: it overreplicates in its insect hosts and causes severe life shortening. mechanism this pathogenesis currently unknown. We have sequenced genomes three variants closely related nonpathogenic wMelCS. show that wMelCS appear to be identical nonrepeat regions genome differ detectably only by triplication 19-kb...
The endosymbiotic bacterium Wolbachia pipientis infects a wide range of arthropods, in which it induces variety reproductive phenotypes, including cytoplasmic incompatibility (CI), parthenogenesis, male killing, and reversal genetic sex determination. recent sequencing annotation the first genome revealed an unusually high number genes encoding ankyrin domain (ANK) repeats. These ANK are likely to be important mediating Wolbachia-host interaction. In this work we determined distribution...
Abstract The European cherry fruit fly Rhagoletis cerasi has been a field model for cytoplasmic incompatibility since the mid 1970s. Two Wolbachia strains were detected in this tephritid species and w Cer2 was described as CI inducing agent dividing populations into two unidirectional incompatible groups, i.e. southern females produce viable offspring with northern males, whereas reciprocal cross results incompatibility. We three new by sequencing multitude of plasmids derived from surface...
Cytoplasmic incompatibility (CI) is the most widespread reproductive modification induced in insects by maternally inherited intracellular bacteria, Wolbachia. Expression of CI Drosophila melanogaster quite variable. Published papers typically show that expression weak and often varies between different lines labs reporting results. The basis for this variability not well understood but considered to be due unspecified host genotype interactions with Here, we male development time can...
The widespread occurrence of Wolbachia in arthropods and nematodes suggests that this intracellular, maternally inherited endosymbiont has the ability to cross species boundaries. However, direct evidence for such a horizontal transmission nature is scarce. Here, we compare well-characterized infection European cherry fruit fly, Rhagoletis cerasi, with North American eastern cingulata, recently introduced Europe. Molecular genetic analysis based on multilocus sequence typing surface protein...
Abstract Wolbachia is a maternally inherited and ubiquitous endosymbiont of insects. It can hijack host reproduction by manipulations such as cytoplasmic incompatibility ( CI ) to enhance vertical transmission. Horizontal transmission also result in the colonization new mitochondrial lineages. In this study, we present 15‐year‐long survey cherry fruit fly Rhagoletis cerasi across Europe spatiotemporal distribution two prevalent strains, w Cer1 Cer2, associated haplotypes Germany. Across most...
Abstract Background Strains of the endosymbiotic bacterium Wolbachia pipientis are extremely diverse both genotypically and in terms their induced phenotypes invertebrate hosts. Despite extensive molecular characterisation diversity, little is known about actual genomic diversity within or between closely related strains that group tightly on basis existing gene marker systems, including Multiple Locus Sequence Typing (MLST). There an urgent need for higher resolution fingerprinting markers...
Coevolution between insects and bacterial endosymbionts contributes to the success of many insect lineages. For first time, we tested for phylogenetic codivergence across multiple taxonomic scales, from within genera superfamily 36 psyllid species seven recognised families (Hemiptera: Psylloidea), their exclusive primary endosymbiont Carsonella more diverse secondary (S-endosymbionts). Within Aphalaridae, found that S-endosymbionts were fixed in one Glycaspis 12 Cardiaspina populations. The...
Gut microbiota affects tephritid (Diptera: Tephritidae) fruit fly development, physiology, behavior, and thus the quality of flies mass-reared for sterile insect technique (SIT), a target-specific, sustainable, environmentally benign form pest management. The Queensland fly, Bactrocera tryoni (Tephritidae), is significant horticultural in Australia can be managed with SIT. Little known about impacts that laboratory-adaptation (domestication) mass-rearing have on larval gut microbiome. Read...
Abstract Wolbachia is an obligately intracellular, maternally inherited bacterium which has been detected in many arthropods. infections disperse host populations by mechanisms such as cytoplasmic incompatibility (CI). CI leads to embryonic mortality occurs when infected males mate with uninfected females or a different strain. Populations of the European cherry fruit fly Rhagoletis cerasi (Diptera, Tephritidae) were found be two strains, w Cer1 and Cer2. Superinfections both strains...
Summary Wolbachia are obligatory endosymbiotic α‐proteobacteria found in many insect species. They maternally transmitted and often exhibit reproductive phenotypes like cytoplasmic incompatibility. Pityogenes chalcographus is a bark beetle causing severe damage spruce stands. Its European populations divided into several mitochondrial clades separated by partial crossing barriers. In this study, we tested large sample set covering the natural range of Europe for presence associations between...
Summary W olbachia are endosymbiotic bacteria that infect 40–65% of arthropod species. They primarily maternally inherited with occasional horizontal transmission for which limited direct ecological evidence exists. We detected in 8 out 24 A ustralian tephritid Here, we have used multilocus sequence typing ( MLST ) to further characterize these strains, plus a novel quantitative polymerase chain reaction method allele assignment multiple infections. Based on five loci and the surface protein...
Understanding the direct and indirect effects of elevated [CO2 ] temperature on insect herbivores how these factors interact are essential to predict ecosystem-level responses climate change scenarios. In three concurrent glasshouse experiments, we measured both individual interactive foliar quality. We also assessed interactions between their plant-mediated development an herbivore eucalypts. Eucalyptus tereticornis saplings were grown at ambient or (400 650 μmol mol(-1) respectively) ( + 4...