Now showing items 1-10 of 12
Genomic Insights Into the Lichen Symbiosis: <italic>Cladonia grayi</italic> as a Model Lichen
Lichens are symbioses between a fungus and a photosynthesizing partner such as a green alga or a cyanobacterium. Unlike mycorrhizal or rhizobial symbioses, the lichen symbiosis is not well understood either morphologically ...
Will the Timing of Temperate Deciduous Trees' Budburst and Leaf Senescence Keep up with a Warming Climate?
Recent changes in the timing of annual events are a sign that climate change is already impacting ecosystems. Carbon sequestration by forests increases with longer growing seasons. Biodiversity can be affected by mis-timing ...
Causes and Consequences of Recombination Rate Variation in Drosophila
Recombination occurs during meiosis to produce new allelic combinations in natural populations, and thus strongly affects evolutionary processes. The model system Drosophila has been crucial for understanding the mechanics ...
Roles for UNC-6/Netrin Signaling During Cell Invasion in C. Elegans
Basement membranes are dense, sheet-like forms of extracellular matrix thatsurround the epithelial tissues of metazoan organisms. While these structures arecritical for epithelial support and tissue organization, basement ...
Causes and functional consequences of denitrifying bacteria community structure in streams affected to varying degrees by watershed urbanization
Human welfare depends heavily on ecosystem services like water purification and nutrient cycling. Many of these ecosystem services, in turn, rely on reactions performed by microbes and yet remarkably little is known about ...
Microtubule Severing Protein Regulation of Sensory Neuron Form and Function in Drosophila melanogaster
Dendrite shape is a defining component of neuronal function. Yet, the mechanisms specifying diverse dendritic morphologies, and the extent to which their functioning depends on these morphologies, remain unclear. Here, we ...
Respiratory physiology and the initiation of molting in the tobacco hornworm, Manduca sexta
(INTEGRATIVE AND COMPARATIVE BIOLOGY, 2011-03)
A Systems Level Analysis of the Transcription Factor FoxN2/3 and FGF Signal Transduction in Sea Urchin Larval Skeleton Development and Body Axis Formation
Specification and differentiation of a cell is accomplished by changing its gene expression profiles. These processes require temporally and spatially regulated transcription factors (TFs), to induce the genes that are necessary ...
Selection and Constraint: Population Genetic Approaches to Understanding the Evolution of Sea Urchin Development
Changes in the expression and function of genes active during metazoan development have played a critical role in the evolution of morphological differences between species and phyla, yet the origins of these changes remain ...
Systematics, Phylogeography and Ecology of Elaphomycetaceae
This dissertation is an investigation of the systematics, phylogeography, and ecology of a globally distributed fungal family, the Elaphomycetaceae. In Chapter 1, we assess the literature on fungal phylogeography, reviewing ...