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Effect of abiotic stresses on the activity of antioxidative enzymes and contents of phytohormones in wild type and AtCKX2 transgenic tobacco plants
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SYSNO ASEP 0348435 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Effect of abiotic stresses on the activity of antioxidative enzymes and contents of phytohormones in wild type and AtCKX2 transgenic tobacco plants Author(s) Mýtinová, Zuzana (UEB-Q)
Motyka, Václav (UEB-Q) RID, ORCID
Haisel, Daniel (UEB-Q) RID, ORCID
Gaudinová, Alena (UEB-Q) ORCID
Lubovská, Zuzana (UEB-Q)
Wilhelmová, Naděžda (UEB-Q) RID, ORCIDSource Title Biologia Plantarum. - : Ústav experimentální botaniky AV ČR, v. v. i. - ISSN 0006-3134
Roč. 54, č. 3 (2010), s. 461-470Number of pages 10 s. Language eng - English Country NL - Netherlands Keywords abscisic acid ; cytokinin ; cytokinin oxidase/dehydrogenase Subject RIV CE - Biochemistry R&D Projects GA522/03/0312 GA ČR - Czech Science Foundation (CSF) GA206/06/1306 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z50380511 - UEB-Q (2005-2011) UT WOS 000279079100009 DOI 10.1007/s10535-010-0082-3 Annotation Responses of antioxidant enzymes from leaves and roots of tobacco plants to the drought stress, salinity and enhanced zinc concentration were investigated. The transgenic plants (AtCKX2) exhibited highly enhanced CKX activity and decreased contents of cytokinins and abscisic acid in both leaves and roots, altered phenotype, retarded growth, and postponed senescence onset. Under control conditions, the AtCKX2 plants exhibited noticeably higher activity of GR in leaves and APX and SOD in roots. CAT activity in leaves always decreased upon stresses in WT while increased in AtCKX2 plants. On the contrary, SOD activity was enhanced in WT but declined in AtCKX2 leaves. In roots, APX activity prevailingly increased in WT while mainly decreased in AtCKX2 in response to stresses. Both WT and AtCKX2 leaves and roots exhibited elevated abscisic acid content and increased CKX activity under all stresses while endogenous CKs and IAA contents were not much affected by stress in either plants. Workplace Institute of Experimental Botany Contact David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Year of Publishing 2011
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