<p>Edaphic factors--those pertaining to the substrate or soil--are thought to play an important role in the diversification of flowering plants. Although edaphic factors are widely interpreted as causal agents in plant ...
<p>Bryophytes, by their haploid dominant life cycle, possess several unique qualities ideal for study of mating patterns. In particular, the possibility of intragametophytic selfing in some species, and the vegetative ...
<p>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 ...
<p>Cancer is a disease state that arises as a result of multiple alterations in signaling pathways that are critical for making key cell fate decisions in normal cells. Understanding how these pathways operate under normal ...
<p>The fern family Cystopteridaceae has been a thorn in the side of fern phylogeneticists, on many levels. Until this thesis, its basic existence (as a deeply isolated clade) and composition were unrecognized, hypotheses ...
<p>Morphological characters from the gametophyte and sporophyte generations have been used in land plants to infer relationships and construct classifications, but sporophytes provide the vast majority of data for the ...
<p>The truffle genus Tuber (Ascomycota, Pezizales, Tuberaceae) produces underground mushrooms widely sought as edible fungi. Tuber species are distributed throughout Northern hemisphere forests and form obligate ectomycorrhizal ...
<p>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, ...
<p>Embryonic development occurs with precisely timed morphogenetic cell movements directed by complex gene regulation. In this orchestrated series of events, some epithelial cells undergo extensive changes to become free ...