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Articles 1 - 6 of 6
Full-Text Articles in Botany
The Subcellular Targeting And In Vivo Metal Binding Characteristics Of Agnt84 Using Transgenic Tobacco And By-2 Suspension Cell Cultures, Brook Kay Nelson
The Subcellular Targeting And In Vivo Metal Binding Characteristics Of Agnt84 Using Transgenic Tobacco And By-2 Suspension Cell Cultures, Brook Kay Nelson
Masters Theses
AgNt84 is a nodulin protein expressed in Alnus glutinosa, an actinorhizal tree that participates with the actinomycete Frankia in symbiotic nitrogen fixation. Expression of AgNt84 mRNA is exclusively found within Zone 2 of the nodules, which is the zone that contains cells in the process of being infected by Frankia. A truncated form of the protein was found to bind Zn2+, Ni2+, Co2+, Cu2+, Cd2+, and Hg2+ in vitro. AgNt84 was predicted to be targeted extracellularly based on the presence of an N-terminal signal sequence. The purpose …
Systematics Of The North American Plums (Prunus Subgenus Prunus Section Prunocerasus; Rosaceae), Joey Thomas Shaw
Systematics Of The North American Plums (Prunus Subgenus Prunus Section Prunocerasus; Rosaceae), Joey Thomas Shaw
Doctoral Dissertations
The North American plums (Prunus subgenus Prunus section Prunocerasus; Rosaceae) are a closely related group with approximately 17 commonly recognized species and lesser taxa. They are infamous for their very poor development of reproductively isolating barriers and most are interfertile in many combinations. This interfertility blurs nearly all morphologically-based taxonomic boundaries. Even still, geographically related morphological variation exists and when intermediates are ignored several taxa may be seen as being reasonably different from one another with respect to both morphology and ecology. Additionally, the ranges of most of the North American plum taxa overlap with the ranges of …
The Vascular Flora Of Powhatan County, Virginia, Michael Austin Terry
The Vascular Flora Of Powhatan County, Virginia, Michael Austin Terry
Master's Theses
The project was undertaken with three main goals in mind: to provide as current and complete an account as possible of the flora of Powhatan County in the form of an annotated checklist; to integrate the information obtained from the inventory into phytogeographical and ecological generalizations currently being developed for the state of Virginia; and, to report any significant or anomalous discoveries. There is no previous county-wide inventory of plant diversity for Powhatan County. However, Corcoran (1981) published a list of plants from the Jones and Mill Creek watershed located in the Fine Creek Mills area of northeastern Powhatan.
Caracterización Bromatológica Y Evaluación De Diferentes Niveles De Inclusión De Morera (Morus Alba L.) Y Sauco (Sambucus Nigra L.), En La Alimentación De Conejos En Ceba, Maria Carolina Blanco Causil, Magda Lucia Sierra Moreno
Caracterización Bromatológica Y Evaluación De Diferentes Niveles De Inclusión De Morera (Morus Alba L.) Y Sauco (Sambucus Nigra L.), En La Alimentación De Conejos En Ceba, Maria Carolina Blanco Causil, Magda Lucia Sierra Moreno
Zootecnia
Actualmente las producciones animales tecnificadas dependen en gran mayoría de alimentos balanceados, estando sujetos a costos que imponga el comercio internacional, esta dependencia afecta las ganancias y se hace urgente buscar alternativas que provean soluciones. En esta investigación se seleccionaron 50 conejos Nueva Zelanda blanco de +/- 750 gr. De peso vivo, según diseño completamente al azar, con 10 unidades experimentales por tratamiento, para evaluar el efecto de la inclusión de los forrajes Morus alba L. y Sambucus nigra L. en sustitución del alimento balanceado comercial (ABC). Los tratamientos consistieron en 5 dietas experimentales, una control a base de ABC …
Age-Related Trends In Red Spruce Needle Anatomy And Their Relationship To Declining Productivity, Margaret H. Ward
Age-Related Trends In Red Spruce Needle Anatomy And Their Relationship To Declining Productivity, Margaret H. Ward
Electronic Theses and Dissertations
Many species of trees undergo predictable age-related changes in foliar morphology and physiology. Age-related declines in photosynthetic rates, which may lead to decreases in productivity, have been described for numerous species. However, the physiological basis for these phenomena is unclear, as are linkages between agerelated trends in morphology/anatomy and physiology. Photosynthetic capacity in red spruce (Picea rubens Sarg.) may result from increased mesophyll resistance to CO2 uptake in older trees. Additional studies with other species imply that the foliage of older trees may have a lower ratio of photosynthetic to non-photosynthetic tissue and a larger proportion of xylem to leaf …
Analysis Of Molecular Variation In The Federally Endangered Astragalus Jaegerianus (Fabaceae, Papilionoideae): A Species With A Restricted Geographic Range, George Floyd Walker
Analysis Of Molecular Variation In The Federally Endangered Astragalus Jaegerianus (Fabaceae, Papilionoideae): A Species With A Restricted Geographic Range, George Floyd Walker
Theses Digitization Project
The purpose of this study is to investigate the level and distribution of genetic variation in Astragalus jaegerianus by using molecular markers. The objectives of the study are: to estimate levels of genetic variation within and among populations of Astragalus jaegerianus; to test the hypothesis that levels and patterns of genetic variation in species of restricted ranges and few individuals is low and partitioned at the population level; and to discern whether, or how well, genetic partitioning of Lane Mountain milk vetch correlates with its geographic partitioning in the field.