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.

引用

页码：283 / 290

页数：8

共 21 条

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