McArthur J A
Department of Biological Sciences, Florida International University, Miami, Florida 33199.
Plant Physiol. 1979 Jan;63(1):218-20. doi: 10.1104/pp.63.1.218.
Dose response curves were determined for phytochrome phototransformation and for a phytochrome-controlled decrease in geotropic curvature in epicotyls of dark-grown Pisum sativum L. cv. Alaska. Ten times as much light was required to produce a spectrophotometrically detectable transformation of phytochrome as was required to produce a significant change in the geotropic response. The red light energy required for a 50% phytochrome transformation caused a 90% change in the physiological response.
测定了黑暗中生长的豌豆（阿拉斯加品种）上胚轴中光敏色素光转化以及光敏色素控制的向地性弯曲降低的剂量反应曲线。产生可通过分光光度法检测到的光敏色素转化所需的光量是产生向地性反应显著变化所需光量的十倍。光敏色素发生50%转化所需的红光能量会导致生理反应发生90%的变化。
