PMID: 8580957Dec 1, 1995Paper

A microtubule-associated protein in maize is expressed during phytochrome-induced cell elongation

The Plant Journal : for Cell and Molecular Biology
P NickMarylin Vantard

Abstract

Plants can adapt their shape to environmental stimuli. This response is mediated by the reorganization of cortical microtubules, a unique element of the cytoskeleton. However, the molecular base of this response has remained obscure so far. In an attempt to solve this problem, signal-dependent changes in the pattern of microtubule-binding proteins were analysed during coleoptile elongation in maize, that is, under the control of the plant photoreceptor phytochrome. Two putative MAPs of 100 kDa (P100) and 50 kDa apparent molecular weights were identified in cytosolic extracts from non-elongating and elongating cells. Both proteins co-assembled with endogenous tubulin, bound to neurotubules and were immunologically related to the neural MAP tau: the P100 protein, depending on the physiological situation, was manifest as a double band and was always found to be heat-stable. In contrast, the 50 kDa MAP was heat-stable only for particular tissues and physiological treatments. The P100 protein was present in all tissues, however in a reduced amount in elongating coleoptiles. The 50 kDa MAP was expressed exclusively upon induction of phytochrome-dependent cell elongation. As shown by immunofluorescence double-staining, an epitope shar...Continue Reading

Citations

Jun 14, 2002·The Plant Journal : for Cell and Molecular Biology·Aniko PayPeter Nick
Dec 21, 2002·The Plant Journal : for Cell and Molecular Biology·Bodo WieslerPeter Nick
Dec 19, 2009·Journal of Experimental Botany·Aleksandra M JovanovićPeter Nick
Aug 3, 2010·Journal of Experimental Botany·Fei QiaoPeter Nick
Oct 1, 1996·Plant, Cell & Environment·P Nick, M Furuya
Jan 21, 2012·Trends in Plant Science·John GardinerJan Marc
Mar 17, 2010·The Plant Journal : for Cell and Molecular Biology·Maurice O OukoPeter Nick
Mar 7, 2001·Plant & Cell Physiology·S SonobeT Shimmen
Oct 19, 2000·Plant & Cell Physiology·M SawanoS Sonobe

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