Ultraweak photoemission from dark‐adapted leaves and isolated chloroplasts

FEBS Letters

Kobayashi, Masaki¹  Inaba, Humio¹  Hideg, Èva¹ 

[1]Biophoton Project, Research Development Corporation of Japan (JRDC), Sendai 982, Japan

关键词: Ultraweak light emission;    Spinach leaf;    Chloroplasts;    Emission spectrum;    Arrhenius plot;   

DOI  :  10.1016/0014-5793(90)81454-V

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 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

【 授权许可】

Unknown