植物蔗糖转化酶及其基因表达调控研究进展

 糖是植物体的能源物质，也是基因表达的重要调节物质。在植物蔗糖代谢过程中，特别是果实发育的过程当中转化酶起到了很重要的作用，催化蔗糖水解成为己糖，直接影响蔬菜和水果的品质。蔗糖转化酶分为酸性转化酶和中性/碱性转化酶，两者在植物体中的作用不同。由于转化酶种类不同，其表达方式也比较复杂，同时能够调控转化酶基因表达的因素也较多，主要有器官和发育特异性、糖、胁迫以及激素等。尽管目前对于植物转化酶已经有了一定程度的了解，但是还存在许多未知的问题需要探究。

Advanced in Plant Invertase and Regulation of Gene Expression

Sugar is not only the energy source but also an important kind of regulator of gene expression in plant. During the process of plant sucrose metabolism, especially during the process of fruits development, invertases catalyze sucrose hydrolyzation to produce hexoses that related to the quality of vegetable and fruits. Invertases are classified into acid invertases and neutral/basic invertases, with different functions. Meanwhile, different invertases have diverse expression patterns, which are influenced by different factors, such as organs and developmental specificity, sugars, stress and phytohormones. Despite the bulk of available knowledge on invertase at present there are still many questions remain to be elucidated further.