Differential effects of deuterium oxide on the growth and morphogenesis of Trichoderma viride

概要

論文の詳細を見る
Trichoderma viride can be grown in deuterium oxide (D_2O) concentrations as high as 99.7%. Increasing concentrations of D_2O (25-90%) progressively extend the lag phase in growth, but do not greatly affect the linear growth rate itself. The minimum age and size of colony required for photoinduction of the conidiation process is also increased. In 95% D_2O, although growth rates are still relatively high, both photomorphogenesis and dark conidiation are completely blocked. This block does not appear to involve the photoprocess itself, but rather post photoinductive processes such as differentiation of conidiophores. These observations point to an alternative, or at least additional, hypothesis to the one frequently cited-that D_2O acts through stabilizing or "temperature lowering" mechanisms.
日本植物生理学会の論文