https://doi.org/10.1051/epjconf/20134108006
Femtosecond Transient Absorption Spectroscopy on the Light-Adaptation of Living Plants
1 Max-Planck-Institute for Chemical Energy Conversion, Stiftstr. 34, D-45470 Mülheim, Germany
2 University of Düsseldorf, Institute of Plant Biochemistry, Universitätsstr. 1, D-40225 Düsseldorf, Germany
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.
© Owned by the authors, published by EDP Sciences, 2013
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
