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Cytokinin regulates root meristem activity via modulation of the polar auxin transport
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SYSNO ASEP 0328359 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Cytokinin regulates root meristem activity via modulation of the polar auxin transport Title Cytokininy regulují aktivitu kořenového meristému změnami v polárním transportu auxinu Author(s) Růžička, K. (BE)
Šimášková, M. (BE)
Duclercq, J. (BE)
Petrášek, Jan (UEB-Q) RID, ORCID
Zažímalová, Eva (UEB-Q) RID, ORCID
Simon, Sibu (UEB-Q) ORCID
Friml, J. (BE)
Van Montagu, M. (BE)
Benková, E. (CZ)Source Title Proceedings of the National Academy of Sciences of the United States of America. - : National Academy of Sciences - ISSN 0027-8424
Roč. 106, č. 11 (2009), s. 4284-4289Number of pages 6 s. Language eng - English Country US - United States Keywords PIN expression ; phytohormone signalling ; root meristem ; auxin transport Subject RIV ED - Physiology R&D Projects LC06034 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z50380511 - UEB-Q (2005-2011) UT WOS 000264278800043 DOI 10.1073/pnas.0900060106 Annotation Plant development is governed by signaling molecules called phytohormones. Typically, in certain developmental processes more than 1 hormone is implicated and, thus, coordination of their overlapping activities is crucial. However, molecular mechanisms underlying the hormonal crosstalk are only poorly understood. Here we dissect the roles of cytokinin in modulating growth of the primary root. We show that cytokinin effect on root elongation occurs through ethylene signaling whereas cytokinin effect on the root meristem size involves ethylene-independent modulation of transport-dependent asymmetric auxin distribution. We propose a novel model for cytokinin action in regulating root growth: Cytokinin influences cell-to-cell auxin transport by modification of expression of several auxin transport components and thus modulates auxin distribution. Workplace Institute of Experimental Botany Contact David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Year of Publishing 2010
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