Light can rescue auxin-dependent synchrony of cell division in a tobacco cell line

0347997 - ÚEB 2011 RIV GB eng J - Journal Article
Qiao, F. - Petrášek, Jan - Nick, P.
Light can rescue auxin-dependent synchrony of cell division in a tobacco cell line.
Journal of Experimental Botany. Roč. 61, č. 2 (2010), s. 503-510. ISSN 0022-0957. E-ISSN 1460-2431
Institutional research plan: CEZ:AV0Z50380511
Keywords : Auxin transport * cell division * NPA
Subject RIV: EB - Genetics ; Molecular Biology
Impact factor: 4.818, year: 2010
http://jxb.oxfordjournals.org/content/61/2/503.abstract

Pattern formation in plants has to cope with ambient variability and therefore must integrate environmental cues such as light. Synchrony of cell divisions was previously observed in cell files of tobacco suspension cultures, which represents a simple case of pattern formation. To develop cellular approaches for light-dependent patterning, light-responsive tobacco cell lines were screened from the cell line Nicotiana tabacum L. cv. Virginia Bright Italia 0 (VBI-0). The light responsive and auxin-autonomous cell line VBI-3 was isolated. As in the progenitor line VBI-0, cell divisions are synchronized in VBI-3 during exponential growth phase. This synchrony can be inhibited by 1-N-naphthylphthalamic acid, an auxin transport inhibitor, and this process was accompanied by the disassembly of actin filaments. However, the synchrony could be rescued when the cells were cultured under white light or with exogenous indolyl-3-acetic acid.
Permanent Link: http://hdl.handle.net/11104/0188628