Date of Defense
Elwood B. Ehrle, Biological Sciences
Julie Wolin, Biological Sciences
Larry Yarger, Biological Sciences
salinity, nutrients, deficiency
Metal toxicities are problematic in the environment. Both plans and animals can accumulate and suffer from excess metal concentrations. However, these metals are always present in some form and concentration, and cannot be eliminated. Some plants exhibit mechanisms which deal successfully with toxic levels of nutrients. For example, the yellow monkey flower plant (Mimulus guttatus) controls Cu tolerance genetically (Macnair, 1983; Baker and Walker, 1990). Common cattails (Typha latifolia) have been shown to accumulate large amounts of Cu with no toxicity symptoms (Taylor and Crowder, 1984). A practical approach is to determine lower thresholds at which symptoms of excess metal concentrations occur. Using this knowledge, negative consequences may be reduced.
Keon, Dylan B., "Copper Accumulation and Its Toxicity Threshold in Common Beans (Phaseolus Vulgaris)" (1993). Honors Theses. 184.
Honors Thesis-Campus Only