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Responses of the species complex Fallopia × bohemica to single-metal contaminations to Cd, Cr or Zn: growth traits, metal accumulation and secondary metabolism.
Barberis, Louise; Chevalier, Wilfried; Toussaint, Marie-Laure; Binet, Philippe; Piola, Florence; Michalet, Serge.
Afiliação
  • Barberis L; CNRS, ENTPE, UMR5023 LEHNA, Univ Lyon, Université Claude Bernard Lyon 1, 69622, Villeurbanne, France.
  • Chevalier W; CNRS, ENTPE, UMR5023 LEHNA, Univ Lyon, Université Claude Bernard Lyon 1, 69622, Villeurbanne, France.
  • Toussaint ML; CNRS, UMR5557 Écologie microbienne, Université de Lyon, Université Claude Bernard Lyon 1, 69622, Villeurbanne, France.
  • Binet P; CNRS-UFC, UMR6249 Chrono-environnement, Université de Bourgogne-Franche-Comté, Montbéliard, France.
  • Piola F; CNRS-UFC, UMR6249 Chrono-environnement, Université de Bourgogne-Franche-Comté, Montbéliard, France.
  • Michalet S; CNRS, ENTPE, UMR5023 LEHNA, Univ Lyon, Université Claude Bernard Lyon 1, 69622, Villeurbanne, France.
Environ Monit Assess ; 192(11): 673, 2020 Oct 03.
Article em En | MEDLINE | ID: mdl-33011855
Plant responses to heavy metals and their storage constitute a crucial step to understand the environmental impacts of metallic trace elements (MTEs). In controlled experiments, we previously demonstrated the tolerance and resilience of Japanese knotweed to soil artificial polymetallic contamination. Using the same experimental design, we tested here the effect of three individual MTEs on Fallopia × bohemica performance traits. Rhizome fragments from three different sites (considered as distinct morphotypes) were grown in a greenhouse for 1 month on a prairial soil artificially contaminated with either Cd, Cr (VI) or Zn at concentrations corresponding to relatively highly polluted soils. Our results confirmed the high tolerance of Bohemian knotweed to metal stress, though, plant response to MTE pollution was dependant on MTE identity. Bohemian knotweed was stimulated by Cr (VI) (increased root and aerial masses), did not display any measurable change in performance traits under Cd at the high dose of 10 mg kg-1, and uptook all MTEs in its rhizome, but only Zn was transferred to its aerial parts. We also highlighted changes in root secondary metabolism that were more accentuated with Zn, including the increase of anthraquinone, stilbene and biphenyl derivatives. These results compared to multi-contamination experiments previously published suggest complex interactions between metals and plant, depending principally on metal identity and also suggest a potential role of soil microbes in the interactions.
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Texto completo: 1 Coleções: 01-internacional Contexto em Saúde: 2_ODS3 Base de dados: MEDLINE Assunto principal: Poluentes do Solo / Fallopia Idioma: En Revista: Environ Monit Assess Ano de publicação: 2020 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Contexto em Saúde: 2_ODS3 Base de dados: MEDLINE Assunto principal: Poluentes do Solo / Fallopia Idioma: En Revista: Environ Monit Assess Ano de publicação: 2020 Tipo de documento: Article