植物非结构性贮藏碳水化合物的生理生态学研究进展

Advances in Physiology and Ecology Studies on Stored Non-Structure Carbohydrates in Plants

非结构性碳水化合物是参与植物生命过程的重要物质。蔗糖不仅是植物体内碳水化合物运输的主要形式 ,而且可以在基因表达水平上对细胞内的代谢进行调节。果聚糖是植物营养组织碳水化合物的主要暂贮形式 ;淀粉是植物主要的长期贮存物质之一。植物体内非结构性碳水化合物的代谢在很大程度上影响着植株的生长发育和对环境因子的响应。综述了植物非结构性贮藏碳水化合物的生理生态学研究进展 ,着重介绍了蔗糖、果聚糖和淀粉代谢的生理过程及对环境因子 (温度和水分 )和人为因素的响应机制。

Non_structural carbohydrates are important substances involved in plant life processes. Sucrose not only is the main form of translocating carbohydrates, but also can regulate the metabolism in plant cells at the level of gene expression. Fructan is the main form of carbohydrates temporarily stored in vegetative organs, while starch is one of the main substances long_term stored in plants. To a great extent, the metabolisms of non_structure carbohydrates affect the plant growth, development, and response to environmental factors. Here we summarize the advances in physiology and ecology studies on stored non_structure carbohydrates in plants, concentrating upon the physiological processes of sucrose, fructan, and starch and their responding mechanisms to environmental factors such as temperature and water and human factors.