An ultrastructural study of cell plate modifications induced by 2,6-dichlorobenzonitrile in onion root meristems |
| |
Authors: | J. A. Gonzalez-Reyes P. Navas G. Garcia-Herdugo |
| |
Affiliation: | (1) Departamento de Morfología y Fisiología, Catedra de Citología e Histología, Facultad de Ciencias, Universidad de Córdoba, E-14071 Córdoba, Spain |
| |
Abstract: | Summary The effect of 2,6-dichlorobenzonitrile on cytokinesis of meristematic cells of onion root during both treatment and recovery has been studied by electron microscopic techniques. 2,6-dichlorobenzonitrile interferes with cell plate formation in such a way that Golgi apparatus vesicles of treated cells appear to be different than controls and seem to coalesce as anomalous partial cell plates. During recovery, an apparently normal progression of cytokinesis is observed and abnormal portions of the cell plate are retained. Nuclear constrictions are observed frequently during recovery as a result of temporal alterations in cytokinesis. Our results show that 2,6-dichlorobenzo-nitrile induces anomalous and/or incomplete cell plates, which might be caused by an altered function of Golgi apparatus. |
| |
Keywords: | Root meristems Cell plate Ultrastructure 2,6-dichlorobenzonitrile |
本文献已被 SpringerLink 等数据库收录! |
|