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A quick screening to assess the phytoextraction potential of cadmium and copper in Quercus pubescens plantlets

Patrick Di Santo (1), Claudia Cocozza (2)   , Roberto Tognetti (3-4), Giuseppe Palumbo (1), Erika Di Iorio (1), Bruno Paura (1)

iForest - Biogeosciences and Forestry, Volume 10, Issue 1, Pages 93-98 (2016)
doi: https://doi.org/10.3832/ifor1999-009
Published: Oct 13, 2016 - Copyright © 2016 SISEF

Short Communications


The relevance of the environmental pollution by heavy metals warrants the necessity to develop and assess more efficient plant-based technologies. This study was conducted to evaluate a quick screening approach in order to investigate the cadmium (Cd) and copper (Cu) phytoextraction potential of Quercus pubescens in a micro-propagation system. Increasing concentrations of Cd (0, 5, 50, and 250 µM) and Cu (0, 5, 50, 250 and 500 µM) were separately applied to evaluate the effect of metals on their absorption and accumulation in downy oak plants. At high concentrations, Cd and Cu significantly reduced the dry biomass of shoots and roots and the plant tolerance index. Cd was toxic at increasing concentrations, inducing higher reduction of shoot dry mass than roots, whereas Cu increased dry mass at 5 µM. This study represents the first attempt to assess Cd and Cu uptake in Q. pubescens under in vitro conditions. The in vitro screening potential is meanly related to the following purposes: (i) proper selection of plant materials resilient to excess metals in the growth substrate; (ii) efficient removal of metals by the selected tree species; (iii) minor interference with the growth of plants accumulating metals in their tissues; (iv) rapid provision of plant materials for tree breeding programs.

  Keywords


Heavy Metals, Phytoremediation, Downy Oak, Micropropagation

Authors’ address

(1)
Patrick Di Santo
Giuseppe Palumbo
Erika Di Iorio
Bruno Paura
Dipartimento Agricoltura, Ambiente e Alimenti, Università degli Studi del Molise, I-86100 Campobasso (Italy)
(2)
Claudia Cocozza
Istituto per la Protezione Sostenibile delle Piante (IPSP), Consiglio Nazionale delle Ricerche (CNR), v. Madonna del Piano 10, I-50019 Firenze (Italy)
(3)
Roberto Tognetti
Dipartimento di Bioscienze e Territorio, Università degli Studi del Molise, I-86090 Pesche (Italy)
(4)
Roberto Tognetti
The EFI Project Centre on Mountain Forests (MOUNTFOR), Edmund Mach Foundation, I-38010 San Michele all’Adige (Italy)

Corresponding author

 
Claudia Cocozza
claudia.cocozza@ipsp.cnr.it

Citation

Di Santo P, Cocozza C, Tognetti R, Palumbo G, Iorio ED, Paura B (2016). A quick screening to assess the phytoextraction potential of cadmium and copper in Quercus pubescens plantlets. iForest 10: 93-98. - doi: 10.3832/ifor1999-009

Academic Editor

Tamir Klein

Paper history

Received: Jan 29, 2016
Accepted: Aug 02, 2016

First online: Oct 13, 2016
Publication Date: Feb 28, 2017
Publication Time: 2.40 months

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