植物学报 ›› 2001, Vol. 18 ›› Issue (05): 531-539.

• 综述与专论 • 上一篇    下一篇

马铃薯块茎发育机理及其基因表达

柳俊 谢从华   

  1. (华中农业大学生命科学技术学院 武汉 430070)
  • 收稿日期:2000-12-04 修回日期:2000-12-22 出版日期:2001-09-20 发布日期:2001-09-20
  • 通讯作者: 柳俊

The Mechanism of Potato (Solanum tuberosum L.) Tuber Development and Related Gene Expression

LIU Jun XIE Cong-Hua   

  1. (College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070)
  • Received:2000-12-04 Revised:2000-12-22 Online:2001-09-20 Published:2001-09-20
  • Contact: LIU Jun

摘要: 马铃薯(Solanum tuberosum L.)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。综述了这一领域现有的研究进展。

Abstract: 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 evelopment. 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 achievement s in the field of potato tuber development.