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Inhibition of Photosynthetic Electron Transport by Azaphenanthrenes Walter Oettmeier and Rolf Grewe Abteilung Biologie, Ruhr-Universität Bochum (Z. Naturforsch. 29 c, 545 — 551 [1974] ; received June 4, 1974) Inhibitors, Photosynthetic Electron Transport, Azaphenanthrenes Various mono- and diazaphenanthrenes were prepared and assayed for their activity as inhibi­ tors of photosynthetic electron flow in isolated chloroplasts in order to get more insight into the mechanism of action of the well known inhibitor o-phenanthroline = 1,10-diazaphenanthrene. The

Inhibition of Photosynthetic Electron Transport by the Quinone Antagonist UHDBT Walter Oettmeier, Klaus Masson, and Doris Godde Lehrstuhl Biochemie der Pflanzen, Ruhr-Universität, Postfach 10 21 48, D-4630 Bochum 1, Bundesrepublik Deutschland Z. Naturforsch. 36 c, 272-275 (1981); received December 19, 1980 Quinone, Photosynthetic Electron Transport, Inhibitor UHDBT (5-«-undecyl-6-hydroxy-4,7-dioxobenzothiazole) is an efficient inhibitor of photosyn­ thetic electron transport in chloroplasts from spinach (pl50-value = 7.61) and the green alga Chlamydomonas

490 Notizen Inhibitors of Photosynthetic Electron Transport. The Properties of Diazidodialkylbenzoquinones Hagan Bayley Department of Chemistry, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, USA Z. Naturforsch. 34 c, 490 — 492 (1979) ; received February 6, 1979 Photosynthetic Electron Transport, Azidoquinones, Photoaffinity Labels The potential photoaffinity reagents 2,5-diazido-3-methyl- 6-isopropyl-l,4-benzoquinone (DAZMIB) and 2,5-diazido-3,6- dimethyl-l,4-benzoquinone (DAZDMQ), which are analogs of the well-known inhibitor 2

Investigations on a Galvanic Cell Driven by Photosynthetic Electron Transport Wolfgang Haehnel, Adelheid Heupel, and Dorothea Hengstermann Lehrstuhl für Biochemie der Pflanzen, Ruhr-Universität Bochum Z. Naturforsch. 33 c, 392 — 401 (1978) ; received March 23, 1978 Photosynthetic Electron Transport, Artificial Mediators, Galvanic Cell, Solar Energy Conversion A light-driven galvanic cell was constructed making use of the photosynthetic activity of isolated chloroplasts. Artificial mediators managed the transfer of electrons from the endogenous electron

Quantitative Structure Activity Relationship of Diphenylamines as Inhibitors of Photosynthetic Electron Transport and Photophosphorylation Walter Oettmeier Lehrstuhl Biochemie der Pflanzen, Ruhr-Universität Bochum, Postfach 10 21 48, D-4630 Bochum 1 Z. Naturforsch. 34 c, 1024 — 1027 (1979) ; received May 31, 1979 Diphenylamines, Inhibitors, Photosynthetic Electron Transport A number of 16 substituted diphenylamines have been tested for their inhibitory activity on photosynthetic NADP reduction and photophosphorylation. The most active compounds exhibited p l

Inhibitory Effects of the Insecticides Allethrin, Lindane, and Jacutin-Fogetten Sublimate on Photosynthetic Electron Transport Aloysius Wild Universität Mainz, Institut für Allgemeine Botanik, Saarstr. 21, D-6500 Mainz Z. Naturforsch. 34 c, 1070 — 1071 (1979) ; received May 23, 1979 Allethrin, Jacutin-Fogetten, Lindane, Photosynthetic Electron Transport The inhibitory effects of the insecticides Allethrin, Lindane, and Jacutin-Fogetten sublimate on photosynthetic electron transport of broken chloroplasts were tested. SO ^m oll-1 Allethrin caused an

Photoinactivation of Photosynthetic Electron Transport under Anaerobic and Aerobic Conditions in Isolated Thylakoids of Spinach Rekha Chaturvedi, M. Singh, and P. V. Sane Plant Molecular Biology and Biochemistry Division, National Botanical Research Institute, Lucknow-226001, India Z. Naturforsch. 47c, 6 3 -6 8 (1992); received August 16, 1991 Photoinactivation, Anaerobiosis, Inhibitors, Photosynthetic Electron Transport, Trypsinization The effect o f exposure to strong white light on photosynthetic electron transport reactions o f PS I and PS II were

A Radioactive 1,4-Benzoquinone as Inhibitor of the DBMIB-Type in Photosynthetic Electron Transport Walter Oettmeier Lehrstuhl Biochemie der Pflanzen, Ruhr-Universität, Postfach 10 21 48, D-4630 Bochum 1 Z. Naturforsch. 34 c, 242 — 249 (1979) ; received January 22, 1979 Radioactive 1.4-Benzoquinone, Photosynthetic Electron Transport, Inhibitor An 125iodine labelled 1,4-benzoquinone, an analogue of DBMIB, was studied for its interaction with the photosynthetic system of chloroplasts. It is not covalently bound to the thylakoid mem­ brane. Instead, chloroplasts

Photoautotrophic Cultured Plant Cells: A Novel System to Survey New Photosynthetic Electron Transport Inhibitors Fumihiko Satoa, Yasuyuki Yamadaa, Sang Soo Kwakb*, Katsunori Ichinoseb, Mitsuhiro Kishidab, Nobutaka Takahashic, and Shigeo Yoshidab a Department o f Agricultural Chemistry, Faculty o f Agriculture, Kyoto University, Kyoto 606, Japan b Chemical Regulation of Biomechanism Laboratory, The Institute o f Physical and Chemical Research (RIK EN), Wako, Saitama 351-01, Japan c Department o f Agricultural Chemistry, Faculty o f Agriculture, University o f

Increase and Stabilization of Photoproduction of Hydrogen in Nostoc muscorum by Photosynthetic Electron Transport Inhibitors Hartmut Spiller, Anneliese Ernst, Wolfgang Kerfin, and Peter Böger Unversität Konstanz Z. Naturforsch. 33 c, 541 — 547 (1978) ; received May 24, 1978 Cyanobacteria, Water Photolysis, Nitrogenase, Uptake Hydrogenase, Photoproduction of Hydrogen, Photosynthetic Electron Transport Inhibitors Nittrogen-fixing cells of Nostoc muscorum grown under nitrogen or in the presence of nitrate exhibit substantial light-induced hydrogen production