March 15, 2012
College of Health Professions Open House
January 17, 2012
Annoesjka Steinman appointed to Natural Resources Commission
June 28, 2011
Graduate student Robert Slider receives teaching honor
June 16, 2010
Outstanding Graduating Natural Resource Management Major
June 15, 2010
Outstanding Graduating Biology Major
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MS student Jesse Lincoln wins Outstanding Poster Award
Date: August 6, 2009
Jesse Lincoln's MS thesis research culminates six years of studies regarding a possible interaction between the invasive "Tree-of-Heaven" (Ailanthus altissima) and neighboring legumes (pea and bean family). Tree-of-Heaven is capable of remarkably fast rates of growth on nutrient poor soils where legumes often dominate due to their ability to fix (capture) atmospheric nitrogen, frequently the most limiting nutrient to plant growth. Legumes house nitrogen-fixing bacteria (rhizobia) in root tumors called nodules, wherein the legume supplies the rhizobia with an optimal environment for fixation. Jesse experimentally demonstrated that Tree-of-Heaven releases compounds from its roots that stimulate increased nodulation in red clover (Trifolium repens). The increase in legume nodulation is most likely an outcome of stress induced by well known phytotoxins exuded by the roots of Tree-of-Heaven. Jesse is currently investigating the identity of the genes in red clover that are stimulated by Tree-of-Heaven. Jesse's work may answer, at least in part, why Tree-of-Heaven can grow so well in nutrient poor soils.
Jesse's faculty advisors are Gary Greer and Margaret Dietrich.