Sucrose controls various developmental and metabolic processes in plants. In this review, we evaluate whether sucrose could be a preferred signaling molecule that controls processes like carbohydrate metabolism, accumulation of storage proteins, sucrose transport, anthocyanin accumulation, and floral induction. We summarize putative sucrose-dependent signaling pathways. Sucrose, but not other sugars, stimulates the genes that encode ADP-glucose pyrophosphorylase (AGPase), granule-bound starch synthase I, and UDP-glucose pyrophosphorylase in several species. The class-1 patatin promoter is induced under high sucrose conditions in potato (Solanum tuberosum). Exogenous sucrose reduces the loading of sucrose to the phloem by inhibiting the expression of the sucrose transporter and its protein activity in sugar beet (Beta vulgaris). Sucrose also influences a wide range of growth processes, including cell division, ribosome synthesis, cotyledon development, far-red light signaling, and tuber development. Floral induction is promoted by sucrose in several species. The molecular mechanisms by which sucrose functions as a signal are largely unknown. Sucrose enhances the expression of transcription factors such as AtWRKY20 and MYB75, which function upstream of the sucrose-responsive genes. Sucrose controls the expression of AtbZIP11 at the post-transcriptional level by the peptide encoded by uORF2. Sucrose levels affect translation of a group of mRNAs in Arabidopsis. Sucrose increases the activity of AGPase by posttranslational redox-modification. Sucrose interrupts the interaction between sucrose transporter SUT4 and cytochrome b5. In addition, the SNF-related protein kinase-1 appears to be involved in sucrose-dependent pathways by controlling sucrose synthase (SUS4) expression.

中文翻译：

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高等植物中的蔗糖信号传导

蔗糖控制植物的各种发育和代谢过程。在这篇综述中，我们评估了蔗糖是否可以成为控制碳水化合物代谢、储存蛋白积累、蔗糖转运、花青素积累和花诱导等过程的首选信号分子。我们总结了假定的蔗糖依赖性信号通路。蔗糖，而不是其他糖，会刺激几种物种中编码 ADP-葡萄糖焦磷酸化酶 (AGPase)、颗粒结合淀粉合酶 I 和 UDP-葡萄糖焦磷酸化酶的基因。1 类 patatin 启动子在马铃薯 (Solanum tuberosum) 中在高蔗糖条件下被诱导。外源蔗糖通过抑制蔗糖转运蛋白的表达及其在甜菜 (Beta vulgaris) 中的蛋白质活性来减少蔗糖对韧皮部的负载。蔗糖还影响广泛的生长过程，包括细胞分裂、核糖体合成、子叶发育、远红光信号和块茎发育。蔗糖在几个物种中促进了花的诱导。蔗糖作为信号起作用的分子机制在很大程度上是未知的。蔗糖增强转录因子的表达，如 AtWRKY20 和 MYB75，它们在蔗糖反应基因的上游起作用。蔗糖通过 uORF2 编码的肽在转录后水平控制 AtbZIP11 的表达。蔗糖水平影响拟南芥中一组 mRNA 的翻译。蔗糖通过翻译后氧化还原修饰增加 AGPase 的活性。蔗糖中断蔗糖转运蛋白 SUT4 和细胞色素 b5 之间的相互作用。此外，