Search
Now showing items 1-20 of 161
From developmental biology to tissue-engineering: printing blood vessels
(University of Missouri--Columbia, 2009)
-engineering, evidenced by the fact that they can elicit adverse host responses and interfere with, rather than guide, direct cellcell interaction as well as assembly and alignment of cell-produced extracellular matrix. Understanding the physical principles of biological...
Genetic and physical interactions of Arabidopsis TOPLESS related 2 with regulators of plant innate immunity
(University of Missouri--Columbia, 2017)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Plants are constantly subjected to attack from pathogens. In order to defend themselves, plants have evolved a robust immune system. However, activation ...
Genome evolution in monocots
(University of Missouri--Columbia, 2011)
Monocotyledonous plants are a well-circumscribed lineage comprising 25% of all angiosperm species, including many agriculturally and ecologically important species (e.g., grasses, palms, orchids, lilies, yams, pondweeds, ...
SIRT1 deacetylation regulates NFAT transcriptional activity
(University of Missouri--Columbia, 2009)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] The class III histone deacetylase SIRT1 plays important roles in aging, metabolism and biological clock control. We have recently demonstrated that SIRT1 is a critical factor...
Analysis of cell signaling during floral abscission in arabidopsis
(University of Missouri--Columbia, 2017)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] The shedding of plant organs is known as abscission. Floral abscission in Arabidopsis is regulated by two related receptor[negation symbol]-like protein ...
An investigation of maize B chromosome-derived minichromosomes
(University of Missouri--Columbia, 2012)
The maize (Zea mays) B chromosome is a supernumerary chromosome with a selfish inheritance characterized by nondisjunction at the second pollen mitosis, univalent survival in meiosis, and preferential fertilization of the ...
A multifaceted approach to improving transgenic technology in maize
(University of Missouri--Columbia, 2017)
Due to a rising world population, scientists must develop new techniques to produce more food. One of these techniques, transgenics, has been around for over two decades however has not been improved at the rate required ...
Phylogenetic and behavioral differentiation in the canyon treefrog, Hyla arenicolor
(University of Missouri--Columbia, 2011)
intraspecific phylogenies using both sequence data and AFLP markers. I describe biologically significant differences in call properties among the geographically distant Mexican lineages relative to differences found among the USA populations. Results from female...
Hellbender (Cryptobranchus alleganiensis) gene flow within rivers of the Missouri Ozark highlands
(University of Missouri--Columbia, 2013)
For species of conservation concern, effective management includes maintaining robust population sizes while monitoring and promoting genetic variability. For hellbenders (Cryptobranchus alleganiensis), an aquatic salamander ...
Eph/ephrin involvement in skeletal muscle development and regeneration
(University of Missouri--Columbia, 2017)
Skeletal muscle development and regeneration is one of the best-described areas of vertebrate biology, due in large part to muscle cells' characteristic sequence of specification, determination, and differentiation. However, many questions still...
The effects of histone acetylation on the maize allele PL1-blotched
(University of Missouri--Columbia, 2007)
Covalent modifications of DNA and nucleosomal histone proteins associated with eukaryotic chromatin have the potential to alter expression of a gene without change in its DNA sequence. One gene regulated through this ...
Social and psychobiological regulation of the human child's hypothalamus-pituitary-axis : an ontogenetic perspective
(University of Missouri--Columbia, 2011)
and dehydroepiandrosterone (DHEA), seems to play a pivotal role mediating the relationships between the social environment and an individual's life history strategies. Yet the processes that underlie the biological embedding of social information remain unclear in humans...
The abundance and diversity of stream salamanders on montane golf courses
(University of Missouri--Columbia, 2012)
of their susceptibility to a range of environmental disturbances, it is widely believed that stream salamanders are useful as biological indicators of ecosystem health. The first study in this thesis examines how stream substrate complexity influences both capture rates...
A study of reproductive toxicology
(University of Missouri--Columbia, 2012)
studies report DEHP reduces fetal testosterone production at doses greatly exceeding human exposure. We fed pregnant CD-1 mice 0.5 - 500,000 [mu]g/kg/day DEHP from gestation day (GD) 9 - 18 and examined mothers and male fetuses on GD 18. We assessed non...
Stimulus specific adaptation in the hearing system of Neoconocephalus katydids (insecta: Orthoptera)
(University of Missouri--Columbia, 2017)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Stimulus Specific Adaptation (SSA) is a fundamental response that identifies novel signals within a repetitive background noise. It is well characterized ...
Fetal exposure to low but not high doses of Bisphenol A (BPA) increases abdominal fat, impairs glucose tolerance and alters serum hormones in male mice : evidence for non-monotonic dose-response relationships
(University of Missouri--Columbia, 2012)
range. We fed pregnant CD-1 mice BPA at doses ranging from 5-50,000 [mu]g/kg/day, spanning 10-fold below the reference dose to 10-fold above the no adverse effect level (NOAEL). At doses below the NOAEL we observed numerous significant effects in adult...
Curcumin regulates transcription in Dictyostelium discoideum
(University of Missouri--Columbia, 2016)
to find targets to improve efficacy of drugs used in psychiatry and cancer treatment. Those studies were subsequently validated in human cells. By taking advantage of this simple but powerful biological model and the molecular genetic tools available to us...
Genetic variation and population structure in the endangered Houston toad in contrast to its common sympatric relative, the coastal plain toad
(University of Missouri--Columbia, 2010)
the Austin County population, and involvement of the general public in conservation....
Collective offspring-parent signaling in a social treehopper : mechanisms, patterns and function
(University of Missouri--Columbia, 2010)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] I investigated the properties of collective behavior in a group-living insect, including the patterns of group behavior, the function of group level ...
Ecological conditions of secondary sexual dimorphism in salix glauca : fundamental and realized dimorphic niche
(University of Missouri--Columbia, 2006)
This thesis explores the dimorphic niche of ecological conditions hypothesis as the selective force behind secondary sexual dimorphism in Salix glauca, a dioecious willow shrub. The dimorphic niche hypothesis predicts trait ...