Fukuda H
Botanical Gardens, Faculty of Science, University of Tokyo, Tokyo 112, Japan.
Cell Death Differ. 1997 Dec;4(8):684-8. doi: 10.1038/sj.cdd.4400310.
Vascular plants have vessels and tracheids composed of dead tracheary elements. Differentiation of procambial or cambial cells to tracheary elements is a typical example of programmed cell death in higher plants. Recent studies on tracheary element differentiation, in particular with an in vitro differentiation system, have revealed a unique cell death process which differs from apoptosis. Herein I summarize the present knowledge about the induction of cell death, the morphological features of cell death, and the mechanism of autolysis, including the involvement of a DNase and cysteine proteases, during tracheary element differentiation.
维管植物具有由死的管状分子组成的导管和管胞。原形成层或形成层细胞分化为管状分子是高等植物中程序性细胞死亡的一个典型例子。最近关于管状分子分化的研究，特别是利用体外分化系统进行的研究，揭示了一个不同于凋亡的独特细胞死亡过程。在此，我总结了目前关于管状分子分化过程中细胞死亡的诱导、细胞死亡的形态特征以及自溶机制的知识，包括DNA酶和半胱氨酸蛋白酶的参与情况。
