摘要
马铃薯 (SolanumtuberosumL .)块茎是有块茎马铃薯植物的地下变态器官 ,它由匍匐茎顶端膨大形成。对于马铃薯块茎形成的生理机制已有许多研究 ,这些研究表明 ,块茎发生受许多因素的影响 ,总体来讲短日照、较低的温度以及离体条件下培养基较高的蔗糖浓度等有利于块茎形成 ,同时 ,块茎形成过程中内源激素亦发生一系列变化。然而 ,对于块茎形成中相关基因表达 ,进而调控块茎形成的系统研究目前还较滞后。已有研究显示 ,块茎形成与膨大涉及到一系列基因的表达与关闭 ,同时它也与淀粉合成和块茎储藏蛋白基因的表达有关。
Potato tuber, swollen at the tip of the stolon, is a modified stem growing underground. There are many researches on the physiological mechanism of tuber initiation. The results have shown that many factors influence the tuberization. Short day length, relatively low temperature, and high concentration of sucrose in the medium in vitro are thought to favour tuber initiation. Variation of endogenous hormones has also been observed during tuber development. However, a systematic research on the gene expression which relates to tuberization is still a gap in studies on potato tuber development. The available data indicate that tuber formation and the subsequent growth are regulated by the activation or close down of the functions of the relevant genes. These processes are also accompanied with the expression of the genes controlling the synthesis of starch and proteins in tubers. This paper reviews the current achievements in the field of potato tuber development.
出处
《植物学通报》
CSCD
北大核心
2001年第5期531-539,共9页
Chinese Bulletin of Botany
基金
国家自然科学基金资助项目 (3 9970 4 64 )
