Laboratoire du Phytotron, C.N.R.S., F-91190, Gif-sur-Yvette, France.
Planta. 1980 Jan;149(4):384-8. doi: 10.1007/BF00571174.
The clongation of the first internode of fully greenVigna sinensis L. is inhibited by white light (W). This inhibition is fluence-rate dependent between 0 and 70 Wm(-2). The kinetics of elongation rate in the light after darkness were investigated with linear displacement transducers. The internode elongation rate does not exhibit any endogenous rhythm. A rapid inhibition occurs during the first 2 or 3 h after the onset of light, and a second type of inhibition (slow reaction) increases from the beginning to the 8th hour of light. The rapid inhibition is not fluence-rate dependent between 20 and 70 Wm(-2), but the slow reaction is. There is no rapid inhibition in a low fluence rate white light to high fluence rate white light transition, only the slow reaction is observed. The responses to different wavebands, i.e., blue light (B), yellow and green light (YG), and red light (R), are the same for the two inhibition reactions. Each waveband used separately does not reproduce the full effect observed in W. Results show a stimulation with B, a greater inhibition activity with YG than with R, and a synergistic action of B and R which when given together lead to an inhibition similar to that obtained in W. Plants returned from the light to darkness progressively recover a high elongation rate without any latent period. The W light regulating internode elongation rate is mainly perceived by the growing internode itself.
完全绿色豇豆第一节间的伸长被白光（W）抑制。这种抑制在 0 到 70 Wm(-2) 之间与辐照度成正比。黑暗后用线性位移传感器研究了光下伸长率的动力学。伸长率没有表现出任何内源性节律。在光照开始后的头 2 或 3 小时内迅速抑制，第二种抑制（慢反应）从光照的第 1 小时到第 8 小时增加。快速抑制在 20 到 70 Wm(-2) 之间与辐照度无关，但慢反应则有关。在低辐照度白光到高辐照度白光的转换中没有快速抑制，只观察到慢反应。两种抑制反应对不同波段（蓝光（B）、黄绿光（YG）和红光（R））的反应相同。单独使用每个波段都不能再现 W 中观察到的全部效果。结果表明 B 有刺激作用，YG 的抑制活性大于 R，B 和 R 具有协同作用，当它们一起使用时，会导致类似于 W 中观察到的抑制作用。植物从光返回黑暗后逐渐恢复高伸长率，没有潜伏期。调节节间伸长率的 W 光主要由生长中的节间本身感知。
