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Evolution of halophytes: a phyloinformatic approach to understanding and exploiting the traits underlying salt-tolerance in plants. Salinity is an increasing burden on the Australian economy & environment, with >2 million ha of salt-affected land, at an annual cost to agriculture over $187 million. One solution is to exploit naturally salt-tolerant plants to increase productive agricultural land and restore salt-affected environments. To do this, we must increase basic knowledge of the diversity ....Evolution of halophytes: a phyloinformatic approach to understanding and exploiting the traits underlying salt-tolerance in plants. Salinity is an increasing burden on the Australian economy & environment, with >2 million ha of salt-affected land, at an annual cost to agriculture over $187 million. One solution is to exploit naturally salt-tolerant plants to increase productive agricultural land and restore salt-affected environments. To do this, we must increase basic knowledge of the diversity & distribution of salt-tolerance. This project is the first to use DNA sequences from thousands of species to understand the evolution of salt-tolerance in order to provide the foundation for the development of new crop varieties, selection of species that can be developed for bioremediation, and identification of traits that will be profitable targets for breeding programs. Read moreRead less
Evolution of vascular tissue in land plants. This project will investigate genetic mechanisms of secondary cell wall thickening in a new genetic model representing an ancient plant lineage. This research will reveal the evolutionary origin of plant vascular tissue; a significant innovation that allowed increased size of plants and the origin of wood.
Were the Tertiary radiations of the Australian flora synchronous? A molecular phylogenetic approach. The fossil record shows that in a short period from about 20 Mya, the ancestral Gondwanan rainforest gave way to the unique Australian ?sclerophyll? flora dominated by eucalypts, acacias and casuarinas. This coincided with a drying climate and the advent of fire. It is hypothesized that ?explosive? evolutionary radiations rapidly increased the number of sclerophyll species, rather than a mere r ....Were the Tertiary radiations of the Australian flora synchronous? A molecular phylogenetic approach. The fossil record shows that in a short period from about 20 Mya, the ancestral Gondwanan rainforest gave way to the unique Australian ?sclerophyll? flora dominated by eucalypts, acacias and casuarinas. This coincided with a drying climate and the advent of fire. It is hypothesized that ?explosive? evolutionary radiations rapidly increased the number of sclerophyll species, rather than a mere range expansion of pre-existing species. In a novel approach, molecular phylogenies of several distantly related plant groups will be used to test whether explosive evolutionary radiations took place simultaneously and to identify the environmental triggers.Read moreRead less
Packed to perform: the effects of telomere traits and free radicals on sperm phenotypes, fertilization success, and offspring viability. This project will integrate telomeres, free radicals and sperm biology into a coherent research program on the roles of free radicals in eroding telomeres and dictating: success in sperm competition and cryptic female choice; longevity and life time fitness in the wild; and, transgenerational effects on offspring viability, in particular mediated via paternal t ....Packed to perform: the effects of telomere traits and free radicals on sperm phenotypes, fertilization success, and offspring viability. This project will integrate telomeres, free radicals and sperm biology into a coherent research program on the roles of free radicals in eroding telomeres and dictating: success in sperm competition and cryptic female choice; longevity and life time fitness in the wild; and, transgenerational effects on offspring viability, in particular mediated via paternal telomere length. Specifically, the project researches how sperm telomere length in sires shorten under stress and how this epigenetic effect is transferred from sires to sons and potentially moderates also filial success in sperm competition and attractiveness in cryptic female choice. Read moreRead less
Lamarckian lizards: novel integration of telomere epigenetics, free radicals and innate antioxidants in condition-dependant sexual signal evolution. In 2009, the Nobel Prize in physiology was awarded Drs. Blackburn, Greider and Szostak for discoveries on telomeres. This project will investigate how telomeres not only cap chromosomes from destruction by free radicals, but also have a key role in life itself, in their influence on ageing, longevity, ornaments and lifetime reproductive success.
Female fluids in post-copulatory sexual selection. This project aims to test the causes, consequences and mechanisms of female reproductive fluids in modulating fertilisation bias in a model vertebrate species, the zebrafish. Female reproductive fluids (the fluid surrounding eggs) may moderate sperm selection by females, thus facilitating mate choice at the gamete level. This project will study interactions involving sperm and female reproductive fluid in an evolutionary framework. The intended ....Female fluids in post-copulatory sexual selection. This project aims to test the causes, consequences and mechanisms of female reproductive fluids in modulating fertilisation bias in a model vertebrate species, the zebrafish. Female reproductive fluids (the fluid surrounding eggs) may moderate sperm selection by females, thus facilitating mate choice at the gamete level. This project will study interactions involving sperm and female reproductive fluid in an evolutionary framework. The intended outcome is increased knowledge of these processes, and better understanding of how non-gamete factors affect fertility, which could benefit fields as diverse as human fertility and aquaculture.Read moreRead less
Genetic variation in the Cotesia flavipes complex of parasitic wasps: towards the effective biological control of stem-borer pests. This project will determine the genetic variation among world populations of the parasitic wasp Cotesia flavipes, as a prelude to the preemptive biological control of stemborer pests of sugarcane in Australia. These pests currently do not occur in Australia, but are found in crops across New Guinea and Indonesia, so that their incursion into Australia is highly lik ....Genetic variation in the Cotesia flavipes complex of parasitic wasps: towards the effective biological control of stem-borer pests. This project will determine the genetic variation among world populations of the parasitic wasp Cotesia flavipes, as a prelude to the preemptive biological control of stemborer pests of sugarcane in Australia. These pests currently do not occur in Australia, but are found in crops across New Guinea and Indonesia, so that their incursion into Australia is highly likely in the future. The results of this project will clarify the taxonomic status of C. flavipes-like species in Australia and provide the means, using molecular markers, to select host strains of this wasp suitable for the control of specific stemborer speciesRead moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE110100134
Funder
Australian Research Council
Funding Amount
$160,240.00
Summary
Sydney basin multi-purpose spectral analysis facility for evolutionary and ecological studies. This near infrared spectroscopy facility at The University of New South Wales will serve the Sydney area biological research community. Near infrared spectroscopy provides quick and robust estimates of key properties of animal and plant tissues, such as age, species and chemical composition.
Marine flatworm parasites of elasmobranchs: a unique model for experiments exploring invasion strategies, biology and specificity to help understand parasitism. Primitive parasites with simple life cycles from ancient hosts emphasise adaptations to parasitism. Experimental studies on live eggs and infective stages of different monogenean (flatworm) parasite species from the skin, gills and cloaca of southern fiddler rays will identify critical interactions early in parasite-host relationships t ....Marine flatworm parasites of elasmobranchs: a unique model for experiments exploring invasion strategies, biology and specificity to help understand parasitism. Primitive parasites with simple life cycles from ancient hosts emphasise adaptations to parasitism. Experimental studies on live eggs and infective stages of different monogenean (flatworm) parasite species from the skin, gills and cloaca of southern fiddler rays will identify critical interactions early in parasite-host relationships that determine whether or not parasitism occurs. Basic and applied benefits include: development of a tractable experimental system for studying parasite-host relationships; strategies to control parasites in public aquaria and aquaculture; profitable and exportable expertise; excellence and research training in basic parasitology; contributions to Australia's natural heritage collections.Read moreRead less
The physiological ecology of forest succession: explaining shade tolerance variation in evergreen and deciduous trees. This work will strengthen both the theoretical framework and the local knowledge base for sustainable timber production from natural forests, and for habitat restoration programs (National Research Priority 1.5: Sustainable Use of Australia's Biodiversity). These same advances of global and local relevance will also enable better quality input into models predicting vegetation d ....The physiological ecology of forest succession: explaining shade tolerance variation in evergreen and deciduous trees. This work will strengthen both the theoretical framework and the local knowledge base for sustainable timber production from natural forests, and for habitat restoration programs (National Research Priority 1.5: Sustainable Use of Australia's Biodiversity). These same advances of global and local relevance will also enable better quality input into models predicting vegetation dynamics under climate change scenarios (Research Priority 1.7: Responding to climate change & variability). Furthermore, by clarifying relationships of shade tolerance with other stress-tolerance strategies, this work will help us understand the evolutionary potential of local floras to respond to global change.Read moreRead less