Rhizosphere bacteria mobilize Zn for hyperaccumulation by Thlaspi caerulescens

Article Abstract:

Thlaspi caerulescens plants are grown in Berkeley, California soil and sterile soil with rhizosphere microbes added to determine the effect on zinc uptake by the plants. Hyperaccumulation of the metal is graphed, showing a distinct improvement in zinc bioremediation with the addition of rhizosphere microbes.

United States, Environmental aspects, Berkeley, California

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Hyperaccumulation of Zn by Thlaspi caerulescens can ameliorate Zn toxicity in the rhizosphere of cocropped Thlaspi arvense

Article Abstract:

Thlaspi caerulescens is planted next to Thlaspi arvense in zinc oxide and zinc sulfide contaminated soil, with varying degrees of root contact, to study the potential use of a hyperaccumulator as a "phytoprotector." Graphs of shoot mass, and contaminant concentration and accumulation accompany the results.

All Other Basic Inorganic Chemical Manufacturing, Industrial inorganic chemicals, not elsewhere classified, Zinc Compounds NEC, Zinc compounds

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Zinc ligands in the metal hyperaccumulator Thlaspi caerulescens as determined using X-ray absorption spectroscopy

Article Abstract:

The plant species Thlaspi has been shown to have an affinity for zinc. For this paper, samples of the plant were gathered in an abandoned lead mine in Derbyshire, England. Also gathered were samples of the soil. Researchers found that the plant gathered 35 times more zinc in its shoots than other plants growing in the area. This situation resents the possibility of using Thlaspi for bioremediation of zinc contaminated sites. However, the method used by the plant for gathering and storing the zinc without suffering adverse effects is not known. Histidine is believed to play an important role in the process.

Pollutants produced & recycled, Pollution, Zinc, Zinc (Metal)

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