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Role of Xanthophylls in Light Harvesting in Green Plants: A Spectroscopic Investigation of Mutant LHCII and Lhcb PigmentâProtein Complexes.
- Source :
-
Journal of Physical Chemistry B . Mar2012, Vol. 116 Issue 12, p3834-3849. 16p. - Publication Year :
- 2012
-
Abstract
- The spectroscopic properties and energy transfer dynamics of the protein-bound chlorophylls and xanthophylls in monomeric, major LHCII complexes, and minor Lhcb complexes from genetically altered Arabidopsis thalianaplants have been investigated using both steady-state and time-resolved absorption and fluorescence spectroscopic methods. The pigmentâprotein complexes that were studied contain Chl a, Chl b, and variable amounts of the xanthophylls, zeaxanthin (Z), violaxanthin (V), neoxanthin (N), and lutein (L). The complexes were derived from mutants of plants denoted npq1(NVL), npq2lut2(Z), aba4npq1lut2(V), aba4npq1(VL), npq1lut2(NV), and npq2(LZ). The data reveal specific singlet energy transfer routes and excited state spectra and dynamics that depend on the xanthophyll present in the complex. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15206106
- Volume :
- 116
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Journal of Physical Chemistry B
- Publication Type :
- Academic Journal
- Accession number :
- 80744486
- Full Text :
- https://doi.org/10.1021/jp210042z