抄録
We studied the association of a Cu tolerant mycobiont, Tremolecia atrata (rusty-rock lichen) with Cu. T. atrata mycobiont cell aggregates, which grew into a sperical shape, rapidly absorbed Cu into their inner and outer parts. The EDS/SEM study showed that Cu was more highly accumulated in the inner part than the outer part of theaggregates. The XANES study revealed that the Cu absorbed by the T. atrata mycobiont was both monovalentand divalent. These results suggested that the T. atrata mycobiont's high tolerance to Cu is attributable to its ability to store Cu (I) inside the cytoplasm and to adsorb Cu (II) on the cell wall.
