Plant and Soil

, Volume 416, Issue 1–2, pp 149–163

Differential elemental uptake in three pseudo-metallophyte C4 grasses in situ in the eastern USA

  • Cédric Gonneau
  • Sanjay K. Mohanty
  • Lee H. Dietterich
  • Wei-Ting Hwang
  • Jane K. Willenbring
  • Brenda B. Casper
Regular Article

Abstract

Background and aims

Elemental uptake in serpentine floras in eastern North America is largely unknown. The objective of this study was to determine major and trace element concentrations in soil and leaves of three native pseudo-metallophyte C4 grasses in situ at five sites with three very different soil types, including three serpentine sites, in eastern USA.

Methods

Pseudo-total and extractible concentrations of 15 elements were measured and correlated from the soils and leaves of three species at the five sites.

Results

Element concentrations in soils of pseudo-metallophytes varied up to five orders of magnitude. Soils from metalliferous sites exhibited higher concentrations of their characteristic elements than non-metalliferous. In metallicolous populations, elemental concentrations depended on the element. Concentrations of major elements (Ca, Mg, K) in leaves were lower than typical toxicity thresholds, whereas concentrations of Zn were higher.

Conclusions

In grasses, species can maintain relatively low metal concentrations in their leaves even when soil concentrations are richer. However, in highly Zn-contaminated soil, we found evidence of a threshold concentration above which Zn uptake increases drastically. Finally, absence of main characteristics of serpentine soil at one site indicated the importance of soil survey and restoration to maintain serpentinophytes communities and avoid soil encroachment.

Keywords

C4 grass; accumulation; excluder Serpentine Calamine Pseudo-metallophytes 

Supplementary material

11104_2017_3198_MOESM1_ESM.xlsx (1.1 mb)
ESM 1(XLSX 1130 kb)

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Copyright information

© Springer International Publishing Switzerland 2017

Authors and Affiliations

  • Cédric Gonneau
    • 1
  • Sanjay K. Mohanty
    • 2
  • Lee H. Dietterich
    • 1
  • Wei-Ting Hwang
    • 3
  • Jane K. Willenbring
    • 2
    • 4
  • Brenda B. Casper
    • 1
  1. 1.Department of BiologyUniversity of PennsylvaniaPhiladelphiaUSA
  2. 2.Department of Earth and Environmental ScienceUniversity of PennsylvaniaPhiladelphiaUSA
  3. 3.Department of Biostatistics and EpidemiologyUniversity of PennsylvaniaPhiladelphiaUSA
  4. 4.Geosciences Research Division, Scripps Institution of OceanographyUniversity of California, San DiegoLa JollaUSA

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