Division of Biology and Medicine, Brown University, 02912, Providence, R.I..
Photosynth Res. 1986 Jan;10(3):283-90. doi: 10.1007/BF00118292.
Excitation energy distribution in Porphyridium cruentum in state 1 and state 2 was investigated by time resolved 77 K fluorescence emission spectroscopy. The fluorescence rise times of phycoerythrin, phycocyanin and allophycocyanin (in cells in state 1 and state 2) were very similar in contrast to the emission from chlorophyll a (Chl a) associated with the two photosystems. In state 2 photosystem II (PSII) Chl a fluorescence emission rose faster than the PSI Chl a emission and decayed more rapidly, and the converse was observed in state 1. These kinetic data support the concept of increased energy transfer from PSII Chl a to PSI Chl a in state 2 in P. cruentum.
通过时间分辨 77K 荧光发射光谱研究了处于状态 1 和状态 2 的血紫质中的激发能分布。藻红蛋白、藻蓝蛋白和别藻蓝蛋白（处于状态 1 和状态 2 的细胞中的）的荧光上升时间非常相似，而与两个光系统相关的叶绿素 a（Chl a）的发射则不同。在状态 2 下，光系统 II（PSII）Chl a 荧光发射上升速度快于 PSI Chl a 发射，且衰减速度更快，而在状态 1 下则相反。这些动力学数据支持在血紫质中，状态 2 下 PSII Chl a 向 PSI Chl a 的能量转移增加的概念。
