Do Arabidopsis halleri from nonmetallicolous populations accumulate zinc and cadmium more effectively than those from metallicolous populations?

  • Bert V
  • Bonnin I
  • Saumitou-Laprade P
 et al. 
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The ability of metallicolous and nonmetallicolous populations of Arabidopsis halleri to accumulate zinc (Zn), cadmium (Cd) and lead (Pb) is compared here in order to explore the extent and variability of this trait in wild A. halleri plants. • Aerial plant parts and the soil around the harvested plants were collected and analysed for metal concentrations or total and extractable metal concentrations, respectively, for 20 metallicolous and 13 nonmetallicolous populations. • Results show that metallicolous and nonmetallicolous populations have the same ability to accumulate Zn and Cd but that neither population type is able to accumu- late Pb. Between populations within type, an homogenous accumulating response is observed for Zn, whereas the ability to accumulate Cd is variable. • Zn and Cd accumulation to very high concentrations is a constitutive property of the species. The Zn and Cd hyperaccumulator trait of A. halleri from contaminated sites was confirmed. Interestingly, nonmetallicolous plants are Zn and Cd hyper- accumulators. The possibility of using A. halleri in phytoremediation is discussed

Author-supplied keywords

  • Arabidopsis halleri
  • Cadmium (Cd)
  • Hyperaccumulation
  • Lead (Pb)
  • Natural populations
  • Phytoextraction
  • Zinc (Zn)

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