Evidence of sulfur-bound reduced copper in bamboo exposed to high silicon and copper concentrations

Collin Blanche, Doelsch Emmanuel, Keller Catherine, Cazevieille Patrick, Tella Marie, Chaurand Perrine, Panfili Frédéric, Hazemann Jean-Louis, Meunier Jean-Dominique. 2014. Evidence of sulfur-bound reduced copper in bamboo exposed to high silicon and copper concentrations. Environmental Pollution, 187 : 22-30.

Quartile : Q1, Sujet : ENVIRONMENTAL SCIENCES

Liste HCERES des revues (en SHS) : oui

Thème(s) HCERES des revues (en SHS) : Psychologie-éthologie-ergonomie

Résumé : We examined copper (Cu) absorption, distribution and toxicity and the role of a silicon (Si) supplementation in the bamboo Phyllostachys fastuosa. Bamboos were maintained in hydroponics for 4 months and submitted to two different Cu (1.5 and 100 mm Cu2þ) and Si (0 and 1.1 mM) concentrations. Cu and Si partitioning and Cu speciation were investigated by chemical analysis, microscopic and spectroscopic techniques. Copper was present as Cu(I) and Cu(II) depending on plant parts. Bamboo mainly coped with high Cu exposure by: (i) high Cu sequestration in the root (ii) Cu(II) binding to amino and carboxyl ligands in roots, and (iii) Cu(I) complexation with both organic and inorganic sulfur ligands in stems and leaves. Silicon supplementation decreased the visible damage induced by high Cu exposure and modified Cu speciation in the leaves where a higher proportion of Cu was present as inorganic Cu(I)S compounds, which may be less toxic.

Mots-clés géographiques Agrovoc : France

Classification Agris : F61 - Physiologie végétale - Nutrition
F62 - Physiologie végétale - Croissance et développement
P36 - Érosion, conservation et récupération des sols

Champ stratégique Cirad : Axe 1 (2014-2018) - Agriculture écologiquement intensive

Auteurs et affiliations

• Collin Blanche, Université d'Aix-Marseille (FRA)
• Doelsch Emmanuel, CIRAD-PERSYST-UPR Recyclage et risque (FRA) ORCID: 0000-0002-7478-4296
• Keller Catherine, Université d'Aix-Marseille (FRA)
• Cazevieille Patrick, CIRAD-PERSYST-UPR Recyclage et risque (FRA)
• Tella Marie
• Chaurand Perrine, Université d'Aix-Marseille (FRA)
• Panfili Frédéric, Société Phytorem (FRA)
• Hazemann Jean-Louis, Institut Néel (FRA)
• Meunier Jean-Dominique, Université d'Aix-Marseille (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/572407/)

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