水分在植物体内的传输与调控

Water transportation and regulation in plants

对近年来国内外有关植物水分传输的研究综合分析表明,从分子、细胞、组织和器官水平上,植物存在优化调控水分平衡的潜在能力,通过转换植物体内的水分传输途径,增加细胞到细胞途径的贡献,能够降低蒸腾、提高水分利用效率.这些新的结论和观点为我国正在兴起的生物节水技术提供了重要的理论依据.在节水农业实践中将生物节水和工程节水有效的结合起来是大幅度提高水资源利用效率的一条重要途径.

Water resources shortage is one of major environmental issues facing to the sustainable development of agriculture and ecological construction, more attention has been paid to improve the water use efficiency (WUE). Abundant data about plant water transportation is analyzed being found that plant have a capable of regulating optimally water balance in molecular level, cell level, tissue and organs level. It is possible to minimize transpiration and maximize WUE by transforming different water transport path and enhancing the contribution of cell to cell pathway. It highlights the theoretical basic of biological watersaving. It is proposed that the combination of biological watersaving and engineering watersaving is an important method to significantly improve water use efficiency in practice.