Biology Department, Brookhaven National Laboratory, 11973, Upton, New York.
Planta. 1967 Sep;75(3):286-90. doi: 10.1007/BF00386329.
The phytochrome concentration in dark-grown seedlings of Pisum sativum, Phaseolus aureus and Sinapis alba remained constant under continuous far-red illumination for periods of up to 6 hours. Similar treatment of Zea mays seedlings reduced the phytochrome concentration by more than 60 percent. The results in the dicotyledonous seedlings may be due to the reversion of Pfr to Pr at a rate sufficient to prevent Pfr destruction; no evidence for reversion has been detected in Zea. Typical photomorphogenic responses were observed in the dicotyledonous seedlings in the absence of Pfr destruction.
在黑暗中生长的豌豆、金盏花和白芥幼苗中，光敏色素的浓度在连续远红光照射下长达 6 小时保持不变。对玉米幼苗进行类似的处理，会导致光敏色素浓度降低 60%以上。双子叶植物幼苗的结果可能是由于 Pfr 以足以防止 Pfr 破坏的速率逆转为 Pr；在玉米中没有检测到逆转的证据。在没有破坏 Pfr 的情况下，在双子叶植物幼苗中观察到典型的光形态建成反应。
