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Vitamin D in an ecological context.

L O Björn1, T Wang

  • 1Department of Plant Biology, Lund University, Sweden.

International Journal of Circumpolar Health
|June 13, 2000
PubMed
Summary
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Vitamin D and its precursors originate in phytoplankton, forming the base of the food chain. The vitamin/provitamin ratio in algae may serve as an ecological UV-B radiation exposure meter.

Area of Science:

  • Ecology
  • Biochemistry
  • Environmental Science

Background:

  • Vitamin D (D2 and D3) and provitamins are found in food, with known human health effects.
  • Research on vitamin D in an ecological context is limited.
  • Fish obtain vitamin D and provitamins from phytoplankton, the base of the food chain.

Purpose of the Study:

  • To investigate the ecological role of vitamin D and its precursors.
  • To explore the potential of the vitamin/provitamin ratio as a UV-B radiation exposure meter.
  • To identify algae species capable of vitamin D synthesis.

Main Methods:

  • Analysis of vitamin D and provitamin content in phytoplankton and algae.
  • Investigation of UV-B radiation influence on provitamin conversion in algae.

Related Experiment Videos

  • Examination of vitamin D in reindeer lichen and its role in plant-fungal symbiosis.

    • Main Results:

    • Phytoplankton are the origin of vitamin D and provitamins in the food chain.
    • Algae likely convert provitamins to vitamin D under UV-B radiation.
    • Reindeer lichen contains vitamin D2 and D3; vitamin D acts as a growth substance in some plants.

    Conclusions:

    • The vitamin/provitamin ratio in algae may function as an ecological UV-B radiation indicator.
    • Further research is needed to identify specific algae species involved in vitamin D synthesis.
    • Vitamin D has ecological significance beyond human health, influencing plant growth and symbiosis.