Femtosecond Transient Absorption Spectroscopy on the Light-Adaptation of Living Plants

被引：1
|
作者：
Mueller, M. G. [1 ]
Jahns, P. [2 ]
Holzwarth, A. R. [1 ]
机构：
[1] Max Planck Inst Chem Energy Convers, Stiftstr 34, D-45470 Mulheim, Germany
[2] Univ Dusseldorf, Inst Plant Biochem, D-40225 Dusseldorf, Germany
来源：
XVIIITH INTERNATIONAL CONFERENCE ON ULTRAFAST PHENOMENA | 2013年 / 41卷
关键词：
ENERGY-DISSIPATION; IDENTIFICATION;
D O I：
10.1051/epjconf/20134108006
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The photoprotection reaction of the photosynthetic system under excessive sun light has been resolved for the first time by femtosecond absorption spectroscopy from the visible to near-infrared in intact leaves of Arabidopsis thaliana. The light-adaptation process was measured and a prominent non-photochemical quenching (npq) behavior located in photosystem II was observed. Among the various npq quenching mechanisms which have been discussed so far the most likely is the formation of chlorophyll-chlorophyll charge-transfer states which create a powerful energy dissipation pathway for the quenching.
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页数：3
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