ENERGY-DISTRIBUTION IN THE PHOTOCHEMICAL APPARATUS OF PORPHYRIDIUM-CRUENTUM - PICOSECOND FLUORESCENCE SPECTROSCOPY OF CELLS IN STATE-1 AND STATE-2 AT 77-K

被引：13
作者：
BRUCE, D
HANZLIK, CA
HANCOCK, LE
BIGGINS, J
KNOX, RS
机构：
[1] UNIV ROCHESTER, DEPT PHYS & ASTRON, ROCHESTER, NY 14627 USA
[2] UNIV ROCHESTER, LASER ENERGET LAB, ROCHESTER, NY 14627 USA
来源：
PHOTOSYNTHESIS RESEARCH | 1986年 / 10卷 / 03期
关键词：
D O I：
10.1007/BF00118292
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
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 Chi 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.
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页码：283 / 290
页数：8
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