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Behavioral choice and demographic consequences of wood frog habitat selection in response to land use
(University of Missouri--Columbia, 2007)
microhabitats by radio-tracking 117 frogs over 3 years. I documented 29 predation events, 13 desiccation events, and 8 mortalities of unknown cause. Using Coxproportional hazard models, I found that survival within the timber harvest array was 1.7 times lower...
Mechanisms of polar growth in the alphaproteobacterial order rhizobiales
(University of Missouri--Columbia, 2019)
characterized a comprehensive set of cell wall synthesis enzymes in A. tumefaciens and identified penicillin-binding protein 3a (PBP3a) and PBP3b as a synthetic lethal pair that function during cell division, and PBP1a as an essential enzyme required for polar...
Identification and characterization of M cells in the mammalian conjunctiva
(University of Missouri--Columbia, 2007)
The M cell is a morphologically and functionally distinct epithelial cell found in the follicle associated epithelium (FAE) above organized lymphoid tissue at distinct locations along mucosal surfaces. By sampling antigens ...
From unique killers to a jumbo genome - isolation and characterization of phages that infect the plant pathogen, Agrobacterium tumefaciens
(University of Missouri--Columbia, 2019)
with Agrobacterium genomospecies 3. The T4-like phages in our collection are not potent killers. Atu_ph04 is unique T4-like phage that is similar to a group of rhizophages. The largest Agrobacterium phage, Atu_ph07, has a head diameter of 146 nm, an extended tail...
Effects of prescribed fire and timber harvest on terrestrial salamander abundance, behavior, and microhabitat use
(University of Missouri--Columbia, 2014)
surveys for three years and used a statistical modeling approach that accounted for the tendency of terrestrial salamanders to be belowground and unavailable for surveys. I found that terrestrial salamander density at our Missouri Ozark study site ranged...
The impacts of partner abundance on benefits from facultative pollination mutualism
(University of Missouri--Columbia, 2010)
, Trifolium dasyphyllum and T. parryi, that vary in specialization on a shared bumblebee pollinator, Bombus balteatus. I examined a) foraging choices of queen B. balteatus among the clovers and explanatory mechanisms behind observed foraging biases, b) how...
Role of non-hypophototropic hypocotyl[3] (NPH[3]) in regulation of phototropism in Arabidopsis
(University of Missouri--Columbia, 2008)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Light is arguably one of the most important environmental factor that not only provides the plant with its energy needs but also cues to modulate its growth and development...
Tales of an 'invisible' life stage : survival and physiology among terrestrial juvenile ambystomatid salamanders
(University of Missouri--Columbia, 2019)
of the many amphibian species for which stage-specific data are lacking. Next, I reared larvae of five species (A. annulatum, A. maculatum, A. opacum, A. talpoideum, and A. texanum) from populations along an ~200 km latitudinal gradient in Missouri, USA...
Ecological genomics of divergence, admixture, and fitness in the smallmouth bass (Micropterus dolomieu)
(University of Missouri--Columbia, 2021)
their extensive native distribution. Much less is known about levels and distribution of diversity within the species. In 1940, Carl Hubbs and Reeve Bailey published descriptions of two distinct subspecies: the Northern Smallmouth Bass (M. d. dolomieu), inhabiting...
Impact of selective motor neuron death on hypoglossal motor neuron survival and tongue morphology in a novel model of dysphagia
(University of Missouri--Columbia, 2019)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Amyotrophic lateral sclerosis (ALS) is a devastating disease characterized by the progressive loss of motor neurons and paralysis of the muscles they innervate. Hypoglossal...
Seasonality and elevational migration in an Andean bird community
(University of Missouri--Columbia, 2010)
Life history strategies of many birds in the Neotropics remain poorly known. In particular, details on the seasonal movements of individuals and populations within the Neotropics remain largely unknown, including short-distance ...
Approaches for unveiling the kinetic mechanisms of voltage gated ion channels in neurons
(University of Missouri--Columbia, 2019)
to guide the optimization engine to produce a model with a desired behavior, such as single-channel open probability and use dependent effects. To streamline data collection for experiments in brain slice preparations, we developed a 3D virtual software...
PopZ and FtsZ coordinate polar growth termination and cell division in Agrobacterium tumefaciens
(University of Missouri--Columbia, 2018)
Understanding how bacterial cells expand their cell walls is an important question with relevance to development of antibiotics. While many studies have focused on the regulation of bacterial elongation utilizing lateral ...
Coupling, membrane conductance, and ion channel mRNA profiles in the establishment and maintenance of network activity in the crustacean cardiac ganglion
(University of Missouri--Columbia, 2021)
Neural networks produce critical rhythmic behaviors throughout an animal's lifespan, despite growth, differing environments, and changes in physiological state. This requires networks which balance stability in their ...
A study of the role of the Atg8 protein in autophagic vesicle formation
(University of Missouri--Columbia, 2009)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Autophagy is the term used to refers to an catabolic cellular cleanup process through the lysosomal machinery. During autophagy portions of cytoplasm are non...
Characterization of pigment-protein complexes in the cyanobacterium Anacystis Nidulans R2
(University of Missouri--Columbia, 1987)
Intrinsic membrane proteins associated with photosynthetic electron transfer have highly-conserved analogs in both cyanobacteria and chloroplasts. However, the protein complexes required for light-harvesting are quite ...