近年来, 来自农杆菌的致瘤基因在植物中的功能和作用机理研究越来越得到重视。6b基因是植物肿瘤形成的重要影响因子, 它位于T-DNA片段上, 属于rolB基因家族。在植物体内, 6b基因能影响激素水平、糖的含量和其他次生代谢产物的积累, 以及改变与其相关基因的表达水平等, 但其具体作用机制还有待深入研究。文章对6b基因的生物功能、分子结构、活性部位、作用模式等方面的重要研究进行了综述, 为这类功能基因的进一步研究及应用提供了理论依据。
In recent years, the functional mechanisms of the oncogenens from Agrobacterium in plants were received more and more attentions. 6b genes, derived from the T-DNA fragment, are vital carcinogenesis factors of plants and belong to rolB genes family. In plants, 6b genes can affect phytohormone levels and carbohydrate contents, and can also cause accumulation of secondary metabolites, as well as change the relative genes expression. The specific mechanisms behind these impacts remain to be researched in-depth. In this paper, the function, structure, activity, and acting mode of the 6b genes were summarized, which provide a theoretical foundation for further study and application of these functional genes.
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