Rhythm in potassium uptake by a duckweed, Lemna gibba G3
Rhythm in potassium uptake by a duckweed, Lemna gibba G3
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浮萍 G3 吸收钾的节律
DOI：
10.1093/oxfordjournals.pcp.a075731
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发表时间：
1978
影响因子：
4.9
通讯作者：
T. Tsudzuki
中科院分区：
文献类型：
--
作者：
T. Kondo;T. Tsudzuki
长日浮萍lena gibbaG3的“流动培养基培养”在连续光照下的钾吸收活性遵循一个持续5天以上的昼夜节律。在26°C下，在3000勒克斯下，节律周期约为25小时，并且对温度略有过度补偿，q10略小于1.0。节律的幅度取决于光照强度，在黑暗中没有钾的吸收。镁的吸收受钾运动的影响，在钾吸收已经饱和的情况下表现出小幅度的昼夜节律性。钙摄取无明显节律性。在对比中。长臂猿，一种短日照的浮萍。Perpusilla6746仅在黑暗条件下表现出钾吸收的昼夜节律，而在光照条件下则没有。这种节律并没有持续到第二个周期之后。
The potassium uptake activity of the “flow-medium culture” of a long-day duckweed,Lemna gibbaG3, followed a circadian rhythm which persisted for more than 5 days under continuous light. The period of the rhythm was about 25 hr under 3000 lux at 26°C and was slightly over-compensated against temperature, Q10being a little less than 1.0. The amplitude of the rhythm was dependent on light intensity, and there was no potassium uptake in the dark. Magnesium uptake was affected by the potassium movement and showed circadian rhythmicity with a small amplitude under conditions where the potassium uptake was already saturated. Calcium uptake did not show any obvious rhythm. In Contrast toL. gibba, a short-day duckweedL. perpusilla6746 displayed circadian rhythm of potassium uptake only in the dark and not in the light. This rhythm did not persist beyond the second cycle.