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在杂种白杨（Populus sieboldii × P. grandidentata）愈伤组织中体外诱导次生木质部样导气组织。

In vitro induction of secondary xylem-like tracheary elements in calli of hybrid poplar (Populus sieboldii × P. grandidentata).

机构信息

Faculty of Agriculture, Tokyo University of Agriculture and Technology, Fuchu-Tokyo, 183-8509, Japan.

出版信息

Planta. 2013 Apr;237(4):1179-85. doi: 10.1007/s00425-013-1839-7. Epub 2013 Jan 19.

DOI:10.1007/s00425-013-1839-7
PMID:23334444
Abstract

The formation of tracheary elements was induced in calli derived from petioles of hybrid poplar (Populus sieboldii × P. grandidentata) after 10 days of culture on medium that lacked auxin but contained 1 μM brassinolide. Some differentiated cells formed broad regions of cell walls and bordered pits, which are typical features of tracheary elements of secondary xylem. Other differentiated cells resembled tracheary elements of primary xylem, with spiral or reticulate thickening of cell walls. The tracheary elements that developed in calli were formed within cell clusters. This induction system provides a new model for studies of the mechanism of differentiation of secondary xylem cells in vitro.

摘要

在不含生长素但含有 1 μM 油菜素内酯的培养基上培养 10 天后，从杂种杨（毛白杨×银白杨）叶柄衍生的愈伤组织中诱导形成了导管分子。一些分化细胞形成了宽阔的细胞壁区域和边缘纹孔，这是次生木质部导管分子的典型特征。其他分化细胞类似于初生木质部的导管分子，细胞壁呈螺旋状或网状加厚。在愈伤组织中发育的导管分子是在细胞簇内形成的。该诱导系统为体外研究次生木质部细胞分化机制提供了新的模型。

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