Ormenese Sandra, Bernier Georges, Périlleux Claire
Laboratory of Plant Physiology, Department of Life Sciences, University of Liège, B22 Sart Tilman, 4000, Liege, Belgium.
Planta. 2006 Nov;224(6):1481-4. doi: 10.1007/s00425-006-0317-x. Epub 2006 Jun 15.
A single application of cytokinin benzyladenine causes a threefold increase in the frequency of plasmodesmata in the vegetative shoot apical meristem (SAM) of Sinapis alba plants. This increase is observed 20 h after application within all cell layers (L1, L2, L3) as well as at the interfaces between these layers. Evidence is presented indicating that cytokinin promotes mainly the formation of new secondary plasmodesmata. A similar increase in the frequency of secondary plasmodesmata was observed in the Sinapis SAM during the floral transition induced by a single long day, suggesting that this effect of the long day is mediated by cytokinin.
单次施用细胞分裂素苄基腺嘌呤可使白芥植株营养茎尖分生组织（SAM）中胞间连丝的频率增加两倍。施用后20小时，在所有细胞层（L1、L2、L3）以及这些层之间的界面处均观察到这种增加。有证据表明，细胞分裂素主要促进新的次生胞间连丝的形成。在由单个长日照诱导的花转变过程中，白芥SAM中次生胞间连丝的频率也有类似增加，这表明长日照的这种作用是由细胞分裂素介导的。
