Ultraweak photoemission from dark-adapted leaves and isolated chloroplasts.

Abstract:

:Dark-adapted isolated spinach chloroplasts and leaves, unlike sub-chloroplast fractions, are capable of emitting ultraweak light spontaneously (50-125 counts/s 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.

journal_name

FEBS Lett

journal_title

FEBS letters

authors

Hideg E,Kobayashi M,Inaba H

doi

10.1016/0014-5793(90)81454-v

subject

Has Abstract

pub_date

1990-11-26 00:00:00

pages

121-4

issue

1-2

eissn

0014-5793

issn

1873-3468

pii

0014-5793(90)81454-V

journal_volume

275

pub_type

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