Nutrients213-page12

Nutrients213-page12 - that serves as an indicator of land mine location Modification for Phytoremediation Plants are even used in some environments

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Plant Nutrients and Soils - 12 Aluminum Tolerance. As mentioned earlier, many soils have a high aluminum content, which is toxic to plants. Agricultural geneticists have developed plant strains whose roots secrete organic acids, such as malic or citric acid, which can chelate aluminum in the soil, reducing its toxicity. Both tobacco and papaya have had genetic modification for this purpose. Smart Plants Research using Arabidopsis has produced a mutant strain that produces a blue pigment when the plant's phosphorus supply is low, but prior to the plant exhibiting deficiency symptoms. The plant is communicating that it needs phosphorus! There is a genetically modified plant that can be sown in areas with land mines
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Unformatted text preview: that serves as an indicator of land mine location. Modification for Phytoremediation Plants are even used in some environments to remove toxic substances from soils, a process called phytoremediation. Plants that can absorb potentially toxic minerals are planted in landfills. In some cases, the plants can degrade harmful chemicals; other plants accumulate the substance, and the plants can be harvested, dried, and removed to a safe storage site. Test sites are in use today for removing TCE, a carcinogenic organic solvent, TNT, mine sludge contaminants and a number of heavy metals....
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This note was uploaded on 01/08/2012 for the course BIO 213 taught by Professor Makina during the Fall '09 term at SUNY Stony Brook.

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