About: Photosynthesis-inhibiting effects of 2-benzylsulphanylbenzimidazoles in spinach chloroplasts

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://link.springer.com/content/pdf/10.2478%2Fs11696-012-0192-9
Description	Inhibition of photosynthetic electron transport (PET) in spinach chloroplasts by nineteen 2-benzylsulphanylbenzimidazoles (BZA) was studied. BZA were found to inhibit photosynthetic electron transport (PET) and for their inhibitory efficiency, electronic properties of the R substituent on the benzyl moiety are decisive. The PET inhibiting activity of the studied BZA expressed as IC50 varied in the range from 28.5 mu M (R = 3,5-(CF3)(2)) to 394.5 mu M (R = 2,4-(NO2)(2)). For compounds with R = H, 4-CH3, 3-CH3, 3-OCH3, 4-F, 3-F, 4-Cl, 3-Cl, 2-Cl, 4-Br, 3-Br, 3,4-F-2, 3,4-Cl-2, 3-CF3, 3,5-(CF3)(2) linear increase of the inhibitory activity with the increasing value of the substituent's sigma constant up to 0.86 was observed. Further increase of the sigma constant resulted in a sharp activity decrease of the corresponding compounds (R = 2-F-6-Cl, 2-NO2, 3,5-(NO2)(2), 2,4-(NO2)(2)). Using EPR spectroscopy and an artificial electron donor diphenyl carbazide it was found that the site of BZA action in the photosynthetic apparatus is situated on the donor side of PS 2, prior to the Z(center dot)/D-center dot intermediate. Inhibition of photosynthetic electron transport (PET) in spinach chloroplasts by nineteen 2-benzylsulphanylbenzimidazoles (BZA) was studied. BZA were found to inhibit photosynthetic electron transport (PET) and for their inhibitory efficiency, electronic properties of the R substituent on the benzyl moiety are decisive. The PET inhibiting activity of the studied BZA expressed as IC50 varied in the range from 28.5 mu M (R = 3,5-(CF3)(2)) to 394.5 mu M (R = 2,4-(NO2)(2)). For compounds with R = H, 4-CH3, 3-CH3, 3-OCH3, 4-F, 3-F, 4-Cl, 3-Cl, 2-Cl, 4-Br, 3-Br, 3,4-F-2, 3,4-Cl-2, 3-CF3, 3,5-(CF3)(2) linear increase of the inhibitory activity with the increasing value of the substituent's sigma constant up to 0.86 was observed. Further increase of the sigma constant resulted in a sharp activity decrease of the corresponding compounds (R = 2-F-6-Cl, 2-NO2, 3,5-(NO2)(2), 2,4-(NO2)(2)). Using EPR spectroscopy and an artificial electron donor diphenyl carbazide it was found that the site of BZA action in the photosynthetic apparatus is situated on the donor side of PS 2, prior to the Z(center dot)/D-center dot intermediate. (en)
Title	Photosynthesis-inhibiting effects of 2-benzylsulphanylbenzimidazoles in spinach chloroplasts Photosynthesis-inhibiting effects of 2-benzylsulphanylbenzimidazoles in spinach chloroplasts (en)
skos:prefLabel	Photosynthesis-inhibiting effects of 2-benzylsulphanylbenzimidazoles in spinach chloroplasts Photosynthesis-inhibiting effects of 2-benzylsulphanylbenzimidazoles in spinach chloroplasts (en)
skos:notation	RIV/00216208:11160/12:10124174!RIV13-MSM-11160___
http://linked.open...avai/predkladatel	Farmaceutická fakulta v Hradci Králové
http://linked.open...avai/riv/aktivita	I
http://linked.open...avai/riv/aktivity	I
http://linked.open...iv/cisloPeriodika	8
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Klimešová, Věra Waisser, Karel
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Karlova v Praze / Farmaceutická fakulta v Hradci Králové
http://linked.open...dnocenehoVysledku	158595
http://linked.open...ai/riv/idVysledku	RIV/00216208:11160/12:10124174
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	site of action; photosynthetic electron transport; EPR spectroscopy; benzimidazole; alkylsulfanyl (en)
http://linked.open.../riv/klicoveSlovo	EPR spectroscopy photosynthetic electron transport alkylsulfanyl site of action benzimidazole
http://linked.open...odStatuVydavatele	SK - Slovenská republika
http://linked.open...ontrolniKodProRIV	[8C3F71AE33BB]
http://linked.open...i/riv/nazevZdroje	Chemical Papers
http://linked.open...in/vavai/riv/obor	FR
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	66
http://linked.open...iv/tvurceVysledku	Waisser, Karel Klimešová, Věra Kráľová, Katarína Peško, Matúš Šeršeň, František
http://linked.open...ain/vavai/riv/wos	000305460300011
issn	0366-6352
number of pages	5 (xsd:int)
http://bibframe.org/vocab/doi	10.2478/s11696-012-0192-9
http://localhost/t...ganizacniJednotka	11160
is http://linked.open...avai/riv/vysledek of	Photosynthesis-inhibiting effects of 2-benzylsulphanylbenzimidazoles in spinach chloroplasts

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