Involvement of uncoupled antenna chlorophylls in photoinhibition in thylakoids

FEBS Letters

Jennings, R.C.²  Santabarbara, S.²  Garlaschi, F.M.²  Zucchelli, G.²  Neverov, K.V.¹ 

[1] A.N. Bach Institute of Biochemistry, Russian Academy of Sciences, Leninsky Prospect, 33, 117071 Moscow, Russia;Centro C.N.R. Biologia Cellulare e Molecolare delle Piante, Dipartimento di Biologia, Università di Milano, Via Celoria 26, 20133 Milan, Italy

关键词: Photoinhibition;    Action spectrum;    Excited state quenching;    Uncoupled pigment;    Thylakoid;    PS II;    photosystem II;    PS I;    photosystem I;    Chl;    chlorophyll;    Car;    carotenoids;    DCMU;    3-(3;    4-dichlorophenyl)-1;    1-dimethylurea;    DBMIB;    2-5-dibromo-6-isopropyl-3-methyl-1;    4-benzoquinone;    DNB;    m-dinitrobenzene;   

DOI  :  10.1016/S0014-5793(01)02174-3

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

Evidence is presented, by means of both fluorescence and action spectroscopy, that a small, spectroscopically heterogeneous population of both Chl a and Chl b molecules is present in isolated spinach thylakoids and is active in photoinhibition. The broadness of the action spectrum suggests that degraded or incompletely assembled pigment–protein complexes may be involved.

【 授权许可】

Unknown