ANALYSIS OF ISOTOPIC RATIO OF IRON IN ANTARCTIC LICHENS, USNEA SPHACELATA AND UMBILICARIA APRINA (Twelfth Symposium on Polar Biology)
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概要
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For the purpose of getting information about the mechanism of uptake of iron by lichens, isotopic distribution of iron in two kinds of lichens, Umbilicaria aprina and Usnea sphacelata in the vicinity of Syowa Station, Antarctica, was studied. Lichen samples were tentatively separated into two categorical sites, active growing site and inactive site. As the first attempt, the isotopic ratio of 64Fe to 68Fe incorporated in the lichens was determined by neutron activation method and partly by ICP mass technique. The isotopic ratios (^<54>Fe/^<68>Fe) of the active growing site were significantly smaller than those of the inactive site or substratum for both lichens. An autonomous incorporation of iron with a kinetic isotope effect by these lichens can be considered.
- 国立極地研究所の論文
著者
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Nakamura A
Graduate School Of Life And Environmental Sciences University Of Tsukuba
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Nakamura Akira
Department Oc Macromolecular Science Faculty Of Science Osaka University
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Inoue Masakane
Department Of Biology College Of Education Akita University
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