Daily rhythm of MnSOD in the C<Subscript>3</Subscript>-CAM intermediate <Emphasis Type=Italic>Clusia fluminensis</Emphasis> Planch. et Triana.期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Daily rhythm of MnSOD in the C3-CAM intermediate Clusia fluminensis Planch. et Triana.

Authors:	A. Kornas I. Ślesak K. Gawronska E. Fischer-Schliebs Z. Miszalski

Affiliation:	(1) Institute of Biology, Pedagogical University, ul. Podbrzezie 3, 31-054 Kraków, Poland;(2) Institute of Plant Physiology, Polish Academy of Sciences, ul. Niezapominajek 21, 30-239 Kraków, Poland;(3) Institute of Botany, Darmstadt University of Technology, Schnittspahnstrasse 3-5, 64287 Darmstadt, Germany

Abstract:	The C₃-CAM intermediate plant Clusia fluminensis under well-watered at low light conditions opens stomata during the light period. In leaf extracts of this plant we have found two copper-zinc superoxide dismutases (CuZnSODs) and two manganese SODs: MnSOD-like protein (MnSOD II) and MnSOD I. Daily rhythm of the MnSOD I shows maximum activity during the afternoon hours and it is accompanied by only a very small tendency to increase in catalase (CAT) activity and lowering of citrate level.

Keywords:	Catalase Crassulacean acid metabolism Oxidative stress Superoxide dismutase
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