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.

引用

页数：3