Symbioses: Plant, Animal, and Microbe Interactions
Maltz, Mia , Cohen, Michael F. .
A Polykingdom Approach to Bioremediation.
Plant performance was examined as a metric for determining a decrease in soil toxicity through the addition of biological amendments. Combinations of biological amendments may catalytically treat contaminated media by enhancing microbial activity, providing a more hospitable environment for plant establishment. Seeds and aquatic plants were grown in diesel-contaminated media that were subjected to various treatment combinations. The bio-amendments were comprised of digestate, a byproduct of anaerobic bacterial digestion of aquatic vegetation and manure solids, and mycelium from a white rot fungus, Pleurotus ostreatus. After the
bio-amendments had colonized the contaminated media, plant inhibition was assessed by measuring seedling germination frequencies and shoot growth. In soil contaminated with 5% diesel (vol/vol), inhibition of seed germination and shoot growth of Festuca rubra were decreased by incorporation of digestate 15 d prior to sowing. We are currently examining the interaction of a combined amendment composed of digestate and mycelium for decreasing the toxicity of diesel-contaminated soil. Seedling germination and biomass measurements are inexpensive and easily interpretable metrics for determining media toxicity levels.
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1 - Sonoma State University, Biology, 1801 East Cotati Ave, Rohnert Park, CA, 94928, USA
2 - Sonoma State University, Biology, 1801 East Cotati Avenue, Rohnert Park, California, 94928, U.S.A.
Presentation Type: Poster:Posters for Topics
Location: Event Tent/Cliff Lodge
Date: Monday, July 27th, 2009
Time: 5:30 PM