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首页> 外文期刊>Journal of Experimental Botany >Changing sugar partitioning in FBPase-manipulated plants.
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Changing sugar partitioning in FBPase-manipulated plants.

机译：改变FBPase操纵植物中的糖分配。

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摘要

This review offers an overview of the current state of our knowledge concerning the role of fructose-1,6-bisphosphatase (FBPase) in sugar partitioning and biosynthesis, through the analysis of genetically manipulated plants. The existence of two well-characterized isoforms is a consequence of the subcellular compartmentalization of photosynthetic eukaryotes, conditioning their respective regulatory mechanisms and their influence over plant metabolism and photosynthesis. Both isoforms are important, as has been deduced from previous work with different plant species, although there is still much to be done in order to gain a definitive vision of this issue. Despite that, alteration of the FBPase content follows a general pattern, there are some differences that could be considered species-specific. Modifications lead to profound changes in the carbohydrate content and carbon allocation, raising questions as to whether flux of some sugars or sugar precursors from one side to the other of the chloroplast envelope occurs to rebalance carbohydrate metabolism or whether other compensatory, though not fully efficient, enzymatic activities come into play. Due to the pleiotropic nature of modifying the core carbon metabolism, an answer to the above questions would require an exhaustive study involving diverse aspects of plant physiology.
机译：这篇综述通过对基因改造植物的分析，概述了我们关于果糖-1,6-双磷酸酶（FBPase）在糖分配和生物合成中的作用的当前知识状态。存在两种特征充分的同工型是光合真核生物亚细胞区室化的结果，调节了它们各自的调节机制以及它们对植物代谢和光合作用的影响。这两种同工型都很重要，这是从以前对不同植物物种的研究中得出的，尽管要获得对该问题的明确认识还有许多工作要做。尽管如此，FBPase含量的变化遵循一般模式，但仍可以认为是特定于物种的某些差异。修饰导致碳水化合物含量和碳分配的深刻变化，引发了一些糖或糖前体从叶绿体包膜的一侧到另一侧的流动是否重新平衡了碳水化合物的代谢，或者是否存在其他补偿性（尽管不完全有效）的疑问，酶促活动开始起作用。由于修饰核心碳代谢的多变性质，对以上问题的答案需要详尽的研究，涉及植物生理学的各个方面。

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