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Botany Commons

Open Access. Powered by Scholars. Published by Universities.®

University of Tennessee, Knoxville

2005

Articles 1 - 2 of 2

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 Dec 2005

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 May 2005

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 …