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Salicylic acid-induced changes to growth and phenolic metabolism in Matricaria chamomilla plants
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SYSNO ASEP 0337516 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Salicylic acid-induced changes to growth and phenolic metabolism in Matricaria chamomilla plants Title Růstové změny indukované kyselinou salicylovou v rostlinách Matricaria chamomilla Author(s) Kováčik, J. (SK)
Grúz, Jiří (UEB-Q) RID, ORCID
Bačkor, M. (SK)
Strnad, Miroslav (UEB-Q) RID, ORCID
Repčák, M. (SK)Source Title Plant Cell Reports. - : Springer - ISSN 0721-7714
Roč. 28, č. 1 (2009), s. 135-143Number of pages 9 s. Language eng - English Country DE - Germany Keywords Chamomile ; Oxidative stress ; Phenolic metabolism Subject RIV CE - Biochemistry CEZ AV0Z50380511 - UEB-Q (2005-2011) UT WOS 000261655900014 DOI 10.1007/s00299-008-0627-5 Annotation The influence of salicylic acid (SA) doses of 50 and 250 mu M, for a period of up to 7 days, on selected physiological aspects and the phenolic metabolism of Matricaria chamomilla plants was studied. SA exhibited both growth-promoting (50 mu M) and growth-inhibiting (250 mu M) properties, the latter being correlated with decrease of chlorophylls, water content and soluble proteins. In terms of phenolic metabolism, it seems that the higher SA dose has a toxic effect, based on the sharp increase in phenylalanine ammonia-lyase (PAL) activity (24 h after application), which is followed by an increase in total soluble phenolics, lignin accumulation and the majority of the 11 detected phenolic acids. Guaiacol-peroxidase activity was elevated throughout the experiment in 250 mu M SA-treated plants. In turn, some responses can be explained by mechanisms associated with oxidative stress tolerance; these mitigate acute SA stress (which is indicated by an increase in malondialdehyde content). Workplace Institute of Experimental Botany Contact David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Year of Publishing 2010
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