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Ecological Genomics Of High Altitude Adaptation In Rufous-Collared Sparrows (Zonotrichia Capensis), Zachary A. Cheviron
Ecological Genomics Of High Altitude Adaptation In Rufous-Collared Sparrows (Zonotrichia Capensis), Zachary A. Cheviron
LSU Doctoral Dissertations
Adaptation is among the most prominent subjects in evolutionary biology. Despite its ubiquity in nature, many details of how adaptation occurs in natural populations remain poorly understood. Of particular interest are the genes and biochemical pathways that underlie adaptive phenotypes and how plasticity in these systems contributes to adaptive evolution. In this dissertation, I address these questions by investigating the molecular genetic basis of high-altitude adaptation in the Rufous-collared Sparrow (Zonotrichia capensis), a species with a broad altitudinal distribution in the Andes. First, I examined the role that variable selection pressures along elevational gradients play in the population genetic structure …
Molecular Diversity And Coat Protein Expression Of Sweet Potato Leaf Curl Virus, Dina Lida Gutierrez Reynoso
Molecular Diversity And Coat Protein Expression Of Sweet Potato Leaf Curl Virus, Dina Lida Gutierrez Reynoso
LSU Doctoral Dissertations
Leaf curl virus diseases have been reported in sweetpotato throughout the world. One of the causal agents is Sweet potato leaf curl virus (SPLCV) which belongs to the genus Begomovirus (family Geminiviridae). In the United States, SPLCV has been found infecting an ornamental sweetpotato and several breeding lines but not in sweetpotatoes grown for commercial production. SPLCV does not cause symptoms on Beauregard, the predominant sweetpotato cultivar in the US, but it can reduce its yield. Since SPLCV could become an important constraint for sweetpotato production; diagnosis, identification, and characterization are essential steps to develop an effective management program. The …