植物学报 ›› 2015, Vol. 50 ›› Issue (1): 107-121.DOI: 10.3724/SP.J.1259.2015.00107

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植物体内糖分子的长距离运输及其分子机制

张懿1, 张大兵1, 刘曼2,*()   

  1. 1上海交通大学生命科学技术学院, 上海 200240
    2上海瑞丰农业科技有限公司, 上海 201106
  • 收稿日期:2014-03-06 接受日期:2014-04-14 出版日期:2015-01-01 发布日期:2015-04-09
  • 通讯作者: 刘曼
  • 作者简介:

    ? 共同第一作者

The Molecular Mechanism of Long-distance Sugar Transport in Plants

Yi Zhang1, Dabing Zhang1, Man Liu2, *   

  1. 1School of Life Sciences and Biotechnology, hanghai Jiao Tong University, Shanghai 200240,
    2China Shanghai Ruifeng Company on Agricultural Science nd Technology, Shanghai 201106, China
  • Received:2014-03-06 Accepted:2014-04-14 Online:2015-01-01 Published:2015-04-09
  • Contact: Liu Man
  • About author:

    ? These authors contributed equally to this paper

摘要: 植物器官(如叶、叶鞘、绿色的茎等)可以通过光合作用将CO2合成为碳水化合物, 并经过长距离运输到达库组织(如新生组织、花粉、果实等)中进行贮存或利用。蔗糖是高等植物长距离运输碳水化合物的主要形式。蔗糖分子从源到库的运输包括源组织韧皮部的装载、维管束的运输和库组织韧皮部的卸载3个步骤。遗传学和分子生物学研究证明, 蔗糖转运蛋白、转化酶和单糖转运蛋白在糖分子的装载和卸载过程中发挥重要作用。该文综述了目前对光合产物运输过程及其调控分子机制的最新研究进展。

Abstract: Abstract Plants use CO2 to synthesize carbohydrates in plant leaves, sheaths and green stems during photosynthesis. After long-distance transport, carbohydrates are consumed or stored in sink tissues such as developing tissues, pollen and fruits. Sucrose is the main type of long-distance-transported carbohydrate in higher plants. Transport of sucrose from the source to sink includes phloem loading in the source tissues, transport in vascular bundles, and phloem unloading in sink tissues. Genetics and molecular biology experiments showed that sucrose transporters, invertases and monosaccharide transporters play an important role in loading and unloading carbohydrates. We review the current literatures on carbohydrate transport and the molecular mechanisms of regulating transport.