29. 放射光X線マイクロビームを用いた重金属蓄積植物の元素イメージング

概要

論文の詳細を見る
Some specific kinds of plants are known as hyperaccumulators of heavy metals. It was reported that Chinese brake fern (Pteris vittata L.) contained large amounts of arsenic (As : ca 22,000μg/g dry weight) when grown in contaminated soils. In the present study, Microbeam Synchrotron-Radiation X-ray Fluorescence (micro-SR-XRF) analysis was applied to the fern of in order to reveal the distributions of elements in the plant's tissues and cells. The chemical speciation of As at the cellular level was also carried out by XAFS analysis utilizing the microbeam. The results showed that the fern a took up As (V) from the cultivation medium and accumulated arsenic inside their cells in the As (III) form.
植物化学調節学会の論文
2005-10-13