Donor side capacity of Photosystem II probed by chlorophyll a fluorescence transients
作者： Bruno J Strasser
关键词: Electron donor 、 Photochemistry 、 P700 、 Oxygen-evolving complex 、 Chemistry 、 Chlorophyll a 、 Fluorescence 、 P680 、 Photosystem II 、 Acceptor
摘要: The chlorophyll a fluorescence transient measured under high light shows typical O-J-I-P polyphasic rise. However, certain stress situations such as heat or drought stress, rapid phase with maximum around 300 µs has been observed and called K (Guisse et al. (1995a) Arch Sci Geneve 48: 147–160). Here, we show that various conditions, the appearance of K-step following dip, well lowered level (FM) attainable, can be explained by an imbalance between electron flow leaving RC to acceptor side coming from donor side. This leads stable oxidation secondary donor, tyrosine Z (YZ), possibly accumulation P680+. In case confirm this situation is caused inhibition donation YZ, which due damaged oxygen evolving complex (OEC). Finally, present model includes OEC, P680, QA QB in good agreement experimental data. K-step, natural now used convenient indicator specifically attributed damage on
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sci-hub.se 参考文章(47)
P. Bennoun, B. Bouges, Effects of Hydroxylamine and DCMU on Photosystem II Photosynthesis, two centuries after its discovery by Joseph Priestley. pp. 569- 576 ,(1972) , 10.1007/978-94-010-2935-3_59
Norman I. Bishop, Horst Senger, [3] Preparation and photosynthetic properties of synchronous cultures of Scenedesmus Methods in Enzymology. ,vol. 23, pp. 53- 66 ,(1971) , 10.1016/S0076-6879(71)23079-2
A. Trebst, [65] Inhibitors in electron flow: Tools for the functional and structural localization of carriers and energy conservation sites Methods in Enzymology. ,vol. 69, pp. 675- 715 ,(1980) , 10.1016/S0076-6879(80)69067-3
Tomas Klinkovsky, Jan Naus, Sensitivity of the relative Fpl level of chlorophyll fluorescence induction in leaves to the heat stress. Photosynthesis Research. ,vol. 39, pp. 201- 204 ,(1994) , 10.1007/BF00029387
C. Vernotte, A.L. Etienne, J.-M. Briantais, Quenching of the System II chlorophyll fluorescence by the plastoquinone pool Biochimica et Biophysica Acta (BBA) - Bioenergetics. ,vol. 545, pp. 519- 527 ,(1979) , 10.1016/0005-2728(79)90160-9
Howard H. Robinson, Antony R. Crofts, Kinetics of the oxidation—reduction reactions of the photosystem II quinone acceptor complex, and the pathway for deactivation FEBS Letters. ,vol. 153, pp. 221- 226 ,(1983) , 10.1016/0014-5793(83)80152-5
Alaka Srivastava, Reto J. Strasser, Stress and Stress Management of Land Plants During a Regular Day Journal of Plant Physiology. ,vol. 148, pp. 445- 455 ,(1996) , 10.1016/S0176-1617(96)80278-1
H. J. Van Gorkom, Electron transfer in photosystem II Photosynthesis Research. ,vol. 6, pp. 97- 112 ,(1985) , 10.1007/BF00032785
Jean-Marie Briantais, Jose Dacosta, Y. Goulas, Jean-Marc Ducruet, Ismael Moya, Heat stress induces in leaves an increase of the minimum level of chlorophyll fluorescence, Fo: A time-resolved analysis. Photosynthesis Research. ,vol. 48, pp. 189- 196 ,(1996) , 10.1007/BF00041008
W.L. Butler, M. Kitajima, Fluorescence quenching in Photosystem II of chloroplasts Biochimica et Biophysica Acta. ,vol. 376, pp. 116- 125 ,(1975) , 10.1016/0005-2728(75)90210-8