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Rivista di Biologia Molecolare e Biotecnologie
Indexed/Abstracted in: EMBASE, Science Citation Index Expanded (SciSearch), Scopus
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BIOREMEDIATION - Part II
Minerva Biotecnologica 2001 June;13(2):73-83
Phytoremediation of metals. Tolerance mechanisms against oxidative stress
Navari-Izzo F., Quartacci M. F.
Dipartimento di Chimica e Biotecnologie Agrarie, Università degli Studi di Pisa, Pisa, Italy
Current soil remediation technologies can be invasive and expensive, resulting in drastically disturbed soils. The potential of green plants to remove contaminants in soils is actively being explored in an increasing number of laboratories troughout the world. Metal-accumulating plants can concentrate heavy metals in their roots and shoots to levels far exceeding those present in the soil. Phytoextraction offers the possibility of removing metal contaminants leaving the soil unaffected. At present, this technology must be seen as an alternative technology for progressive, long-term remediation of marginally-contaminated soils because before it is possible to use it on a large scale a number of important issues must be addressed. This paper will review the current status of phytoextraction technology and will consider the oxidative damage caused by excess of metals in plants and the defense strategy against oxidative damage.