Inducing hyperaccumulation of metals in plant shoots
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United States of America Patent
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Jun 29, 1999
Grant Date -
N/A
app pub date -
Mar 21, 1996
filing date -
Mar 21, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention provides methods by which hyperaccumulation of metals in plant shoots is induced by exposure to inducing agents. Hyperaccumulation occurs as part of a two-step process in which metals are first accumulated into plant roots; subsequent transport to plant shoots is induced by exposure to the agent. In preferred embodiments, manipulations that increase availability of metals to the plant are employed prior to application of the inducing agent. Effective inducing agents include conditions of low pH, chelators, herbicides, and high levels of heavy metals. Other phytotoxic agents are also useful. Application of multiple inducing agents results in synergistic effects.
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