《植物生理学报》 2012, 48(12): 1135-1140

高等植物珠被绒毡层的研究

李晶, 郑彩霞*

北京林业大学生物科学与技术学院, 北京100083

通信作者：郑彩霞；E-mail: zhengcx@bjfu.edu.cn；Tel: 010-62337717

摘　要：

绒毡层是植物孢子体向配子体世代转换的“哺乳组织”, 其研究对于揭示植物配子体发育的调控机制具有重要意义。 对花药绒毡层的发育过程已有一些研究, 而对珠被绒毡层的研究积累相对较薄弱。对菊科(Compositae)、柴胡(Bupleu- rum)、大车前(Plantago major)、柱花草(Stylosanthes)等草本植物的研究表明, 因珠被发育过程和结构复杂, 珠被绒毡层结 构也较花药绒毡层复杂, 其发育模式因植物不同而异, 有单珠被绒毡层和双珠被绒毡层两种类型; 珠被绒毡层异常生长会 导致胚珠败育。木本植物珠被绒毡层, 特别是裸子植物的珠被绒毡层在国内外的研究报道不多。

关键词：高等植物; 珠被绒毡层; 裸子植物; 胚珠发育

收稿：2012-10-15   修定：2012-11-26

资助：国家自然科学基金(30671655和31170563)。

Research on Integument Tapetum of Higher Plants

LI Jing, ZHENG Cai-Xia*

College of Biological Science and Technology, Beijing Forestry University, Beijing 100083, China

Corresponding author: ZHENG Cai-Xia; E-mail: zhengcx@bjfu.edu.cn; Tel: 010-62337717

Abstract:

There is a great significance for revealing the plant gametophytic development regulation mechanism to carry out the research on the tapetum, which is recognized as the “nursing organization” of sporophyte generation turning to the gametophyte generation. There are some researches on the development process of the anther tapetum, whereas the research on the integument tapetum is relatively insufficient. The relevant researches in Compositae, Bupleurum, Plantago major and Stylosanthes indicate that the structure of integument tapetum is more complex than anther’s one because of its complex development process and structure. The developmental patterns of the integument tapetum are different in various plants. There are two types of integument tapetums include single integument tapetum and bitegmic tapetum; the abnormal growth of the integument tapetum will lead to the ovule abortion. The research of integument tapetum for woody plants is lags behind, and the one for gymnosperm is few in the domestic and foreign reports.

Key words: higher plant; integument tapetum; gymnosperms; ovule development