CNRS, Centrale Marseille, iSm2 UMR 7313, Aix Marseille Université Marseille, France.
Front Plant Sci. 2014 Jun 23;5:293. doi: 10.3389/fpls.2014.00293. eCollection 2014.
Sucrose is the main form of assimilated carbon which is produced during photosynthesis and then transported from source to sink tissues via the phloem. This disaccharide is known to have important roles as signaling molecule and it is involved in many metabolic processes in plants. Essential for plant growth and development, sucrose is engaged in plant defense by activating plant immune responses against pathogens. During infection, pathogens reallocate the plant sugars for their own needs forcing the plants to modify their sugar content and triggering their defense responses. Among enzymes that hydrolyze sucrose and alter carbohydrate partitioning, invertases have been reported to be affected during plant-pathogen interactions. Recent highlights on the role of invertases in the establishment of plant defense responses suggest a more complex regulation of sugar signaling in plant-pathogen interaction.
蔗糖是光合作用产生的同化碳的主要形式，然后通过韧皮部从源组织运输到汇组织。这种二糖作为信号分子具有重要作用，它参与植物的许多代谢过程。蔗糖对植物的生长和发育是必需的，它通过激活植物对病原体的免疫反应来参与植物的防御。在感染过程中，病原体重新分配植物的糖以满足自身需求，迫使植物改变其糖含量并引发其防御反应。在水解蔗糖和改变碳水化合物分配的酶中，已报道在植物-病原体相互作用中，转化酶受到影响。最近关于转化酶在植物防御反应建立中的作用的重点表明，在植物-病原体相互作用中，糖信号的调节更为复杂。
