ULTRAWEAK PHOTOEMISSION FROM DARK-ADAPTED LEAVES AND ISOLATED-CHLOROPLASTS

被引：31
|
作者：
HIDEG, E [1 ]
KOBAYASHI, M [1 ]
INABA, H [1 ]
机构：
[1] TOHOKU UNIV,ELECT COMMUN RES INST,SENDAI,MIYAGI 980,JAPAN
来源：
FEBS LETTERS | 1990年 / 275卷 / 1-2期
关键词：
Arrhenius plot; Chloroplasts; Emission spectrum; Spinach leaf; Ultraweak light emission;
D O I：
10.1016/0014-5793(90)81454-V
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Dark-adapted isolated spinach chloroplasts and leaves, unlike sub-chloroplast fractions, are capable of emitting ultraweak light spontaneously (50-125 counts per cm2). The emission of leaves is due to two processes with activation energies of 97 and 25 kJ/mol while in isolated chloroplasts, it is the result of a single process (98 kJ/mol), as indicated by the Arrhenius plots of the intensity. Emission spectra demonstrate that the terminal step of these reactions is the excitation of chlorophyll in both samples. We suggest that the additional component in the ultraweak light emission of leaves may be related to mitochondria. © 1990.
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页码：121 / 124
页数：4
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