Ecophysiological characteristics and cadmium accumulation in Downy Oak (Quercus pubescens Willd.)

Cocozza, Claudia; Palumbo, P; Colombo, Claudio; Pinto, Paulo Sérgio de Arruda; Tognetti, Roberto

doi:10.3832/efor0700-009

Cited by 4 publications

(3 citation statements)

References 36 publications

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“…Indeed, the metal concentrations used in our micropropagation conditions were very high, in particular when considering that downy oak is not widely recognized as an efficient forest species for decontamination purposes. Nonetheless, its potential Cd accumulation is high, as detected in pot experiments (Cocozza et al 2012), and this might advocate its use in ecological restoration of polluted sites in marginal areas. Our results provide a preliminary evidence of the remediation potential of downy oak in vitro, although they should not be extrapolated to predict the effects of heavy metals on the growth of mature oak trees.…”

Section: Iforest -Biogeosciences and Forestrymentioning

confidence: 99%

“…In the last ten years, research was focused on highly productive crop plants, such as crops, maize, sunflower, rice (Komarek et al 2007, Murakami & Ae 2009), as well as on short rotation forest trees, i.e., willow and poplar (Fernàndez-Martínez et al 2014, Baldantoni et al 2014. Phytoextraction carried out with the use of other woody plants can be extremely interesting for the restoration of contaminated sites, where environmental conditions are unsuitable for growing energy plants, as well as for their longer reproductive cycles (Paoletti & Günthardt-Goerg 2006, Cocozza et al 2012.…”

Section: Introductionmentioning

confidence: 99%

“…Nonetheless, preliminary results on the tolerance of downy oak (Quercus pubescens Willd.) seedlings to metal-polluted substrates has proven this species as an interesting candidate for the phytostabilization of contaminated sites, particularly in marginal areas (Cocozza et al 2012). In this context, the aims of the present study were to: (i) assess growth perfomances of micropropagated plantlets of downy oak (Q. pubescens Willd.)…”

Section: Introductionmentioning

confidence: 99%

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

Santo¹,

Cocozza²,

Tognetti³

et al. 2017

iForest

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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.

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Section: Iforest -Biogeosciences and Forestrymentioning

confidence: 99%