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A survey of trace elements in pteridophytes.

T Ozaki1, S Enomoto, Y Minai

  • 1Radioisotope Center, School of Science, The University of Tokyo, Yayoi, Japan.

Biological Trace Element Research
|October 31, 2000
PubMed
Summary

This study analyzed trace element concentrations in 96 fern species. Asplenium trichomanes showed high accumulation of scandium, chromium, and cobalt, highlighting species-specific elemental uptake in pteridophytes.

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Area of Science:

  • Environmental Science
  • Plant Biology
  • Analytical Chemistry

Background:

  • Pteridophytes (ferns and fern allies) play a role in terrestrial ecosystems.
  • Understanding trace element uptake in plants is crucial for ecological and toxicological studies.
  • Variability in elemental accumulation among plant species is well-documented but requires detailed investigation.

Purpose of the Study:

  • To determine the concentration ranges of 11 trace elements in 96 pteridophyte species.
  • To identify species-specific characteristics in trace element uptake.
  • To explore correlations between elemental concentrations and plant genera.

Main Methods:

  • Instrumental Neutron Activation Analysis (INAA) was employed to quantify trace elements.
  • Samples from 96 pteridophyte species were analyzed for 11 specific trace elements (Ca, Sc, Cr, Fe, Co, Zn, Rb, Cs, Ba, La, Ce).

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  • Statistical analysis was used to identify highest concentrations and correlations.

    • Main Results:

    • Asplenium trichomanes exhibited the highest concentrations of scandium (Sc), chromium (Cr), and cobalt (Co).
    • Asplenium obscurum showed the highest calcium (Ca) and zinc (Zn) concentrations.
    • Positive correlations were observed between iron (Fe) and scandium (Sc), and between chromium (Cr) and cobalt (Co).
    • Lanthanides (La, Ce) accumulation was notable in diversifying genera like Polystichum, Dryopteris, Diplazium, and Asplenium.

    Conclusions:

    • Significant species-specific variations in trace element accumulation exist among pteridophytes.
    • Certain genera, particularly Asplenium, demonstrate remarkable capabilities for accumulating specific trace elements.
    • The findings provide baseline data for trace element distribution in ferns and inform future ecological studies.