Potentially poplar trees represent one vegetation option for phytostahilization and in situ decontamination of soils polluted with Cadmium (Cd). Poplar is the ideal plant for metal phytoextractions: it’s highly productive in biomass, and it assimilates and translocates to shoots a significant part of metals. Additional favorable traits are fast growth, easy propagation and a drop root system. Cd is a major environmental contaminant accumulated from industrial usage, anthropogenic activity and use of agro-chemicals such as pasturelands fertilized with Cd-rich superphosphate fertiliser. Lately a major effort has been focused on the studies of molecular, genetic and physiological basis for the mechanisms of heavy metal detoxification. Here we report studies on composition and expression of metallothioneins by serniquantitative RT-PCR carried out on cDNA synthesized from leaf and root or woody cuttings of two poplar clones |Nigra poli (Pnpulus nigra) and Lux (PopuIus deltoides). After treatments with two dillerent cadmium concentration. As plant species and even different genotypes within the same species differ in Cd accumulation. The aim of this work is to investigate at molecular level the tree reaction to cadmium excess and evaluate if our genotypes can exhibiting high Cd accumulation and/or tolerance.

Preliminary results on the effects of cadmium on poplar clones

TOGNETTI, Roberto;CAPRARI, Claudio;SCIPPA, Gabriella
2008

Abstract

Potentially poplar trees represent one vegetation option for phytostahilization and in situ decontamination of soils polluted with Cadmium (Cd). Poplar is the ideal plant for metal phytoextractions: it’s highly productive in biomass, and it assimilates and translocates to shoots a significant part of metals. Additional favorable traits are fast growth, easy propagation and a drop root system. Cd is a major environmental contaminant accumulated from industrial usage, anthropogenic activity and use of agro-chemicals such as pasturelands fertilized with Cd-rich superphosphate fertiliser. Lately a major effort has been focused on the studies of molecular, genetic and physiological basis for the mechanisms of heavy metal detoxification. Here we report studies on composition and expression of metallothioneins by serniquantitative RT-PCR carried out on cDNA synthesized from leaf and root or woody cuttings of two poplar clones |Nigra poli (Pnpulus nigra) and Lux (PopuIus deltoides). After treatments with two dillerent cadmium concentration. As plant species and even different genotypes within the same species differ in Cd accumulation. The aim of this work is to investigate at molecular level the tree reaction to cadmium excess and evaluate if our genotypes can exhibiting high Cd accumulation and/or tolerance.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11695/8394
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