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Nebularine Affects Plant Growth and Development but does not Interfere with Cytokinin Signaling
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SYSNO ASEP 0337568 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Nebularine Affects Plant Growth and Development but does not Interfere with Cytokinin Signaling Author(s) Pospíšilová, H. (CZ)
Nisler, Jaroslav (UEB-Q) RID, ORCID
Spíchal, Lukáš (UEB-Q) RID, ORCID
Frébort, Ivo (UEB-Q)Source Title Journal of Plant Growth Regulation. - : Springer - ISSN 0721-7595
Roč. 28, č. 4 (2009), s. 321-330Number of pages 10 s. Language eng - English Country US - United States Keywords Anticytokinin ; Arabidopsis thaliana ; Cytokinin receptor Subject RIV EB - Genetics ; Molecular Biology R&D Projects GA522/06/0022 GA ČR - Czech Science Foundation (CSF) GD522/08/H003 GA ČR - Czech Science Foundation (CSF) GP522/07/P197 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z50380511 - UEB-Q (2005-2011) UT WOS 000271791200003 DOI 10.1007/s00344-009-9096-5 Annotation Nebularine is known for its high cytotoxicity in animals, whereas in plants it was originally believed to be an anticytokinin. In this study we show that in classical cytokinin bioassays, nebularine antagonized cytokinin function in senescence and callus biotests but not in the Amaranthus bioassay. Nebularine reversed the inhibitory effect of cytokinin on lateral root formation in Arabidopsis seedlings, and when applied alone caused increased lateral root formation and shortening of the main root. Systematic spraying of Arabidopsis plants with nebularine led to yellowing and formation of purple pigments, local drying, and withering, although younger plants showed a greater resilience. Comparison of nebularine cytotoxicity in plant and animal cells showed that the growth of tobacco BY-2 cells was inhibited with only about tenfold lower efficacy than mammalian cell lines. Workplace Institute of Experimental Botany Contact David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Year of Publishing 2010
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