, Volume 98, Issue 3, pp 379–384

The ecological significance of nickel hyperaccumulation: a plant chemical defense

  • Scott N. Martens
  • Robert S. Boyd
Original Paper

DOI: 10.1007/BF00324227

Cite this article as:
Martens, S.N. & Boyd, R.S. Oecologia (1994) 98: 379. doi:10.1007/BF00324227


Nickel hyperaccumulating plants have more than 1000 mg Ni kg−1 dry weight when grown on nickel-bearing soils. We hypothesized that Ni hyperaccumulation could serve as a chemical defense against herbivores In feeding experiments with potential insect herbivores and Ni hyperaccumulating plants, only those inseets fed leaves from plants grown on non-nickel-bearing soil survived or showed a weight gain. Among chemical parameters measured, only Ni content of plants was sufficient to explain this result. When subjected to herbivory by lepidopteran larvae, plants grown on Ni-amended soil showed greater survival and yield than plants on unamended soil. Ni hyperaccumulation may be an effective plant chemical defense against herbivores because of its high lethality, apparent low cost, and broad spectrum of toxicity.

Key words

SerpentineStreptanthusHerbivoryHeavy metals

Copyright information

© Springer Verlag 1994

Authors and Affiliations

  • Scott N. Martens
    • 1
  • Robert S. Boyd
    • 2
  1. 1.Department of BotanyUniversity of CaliforniaDavisUSA
  2. 2.Department of Botany and Microbiology, and Alabama Agricultural Experiment StationAuburn UniversityAuburnUSA
  3. 3.Environmental Science Group, EES-15, MS J495Los Alamos National LaboratoryLos AlamosUSA