Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops/Joint International Research Laboratory of Agriculture &agri-product Safety, Yangzhou University, Yangzhou, China.
Plant Signal Behav. 2021 Nov 2;16(11):1952373. doi: 10.1080/15592324.2021.1952373. Epub 2021 Jul 16.
Plant photosynthesis processes play vital roles in crop plant development. Understanding carbohydrate partitioning via sugar transport is one of the potential ways to modify crop biomass, which is tightly linked to plant architecture, such as plant height and panicle size. Based on the literature, we highlight recent findings to summarize phloem loading by sucrose transport in rice. In rice, sucrose transporters, (sucrose transporters) and (sugars are eventually exported transporters) import sucrose and export cells between phloem parenchyma cells and companion cells. Before sucrose transporters perform their functions, several transcription factors can induce sucrose transporter gene transcription levels, such as DNA binding with one finger 11 () and Nuclear Factor Y B1 (). In addition to native regulator genes, environmental factors, such as CO concentration, drought stress and increased temperature, also affect sucrose transporter gene transcription levels. However, more research work is needed on formation regulation webs. Elucidation of the phloem loading mechanism could improve our understanding of rice development under multiple conditions and facilitate its manipulation to increase crop productivity.
植物光合作用过程在作物植物发育中起着至关重要的作用。通过糖转运理解碳水化合物分配是一种潜在的方法，可以改变作物生物量，这与植物结构（如株高和穗大小）紧密相关。基于文献，我们强调了最近的发现，以总结水稻韧皮部装载蔗糖转运的情况。在水稻中，蔗糖转运蛋白（蔗糖转运蛋白）和（糖最终输出转运蛋白）将蔗糖导入和导出韧皮部薄壁细胞和伴胞之间的细胞。在蔗糖转运蛋白发挥作用之前，几个转录因子可以诱导蔗糖转运蛋白基因的转录水平，例如与一个手指 DNA 结合 11（）和核因子 Y B1（）。除了天然调节基因外，环境因素，如 CO 浓度、干旱胁迫和温度升高，也会影响蔗糖转运蛋白基因的转录水平。然而，关于形成调节网络的研究工作还需要更多。阐明韧皮部装载机制可以提高我们对多种条件下水稻发育的理解，并促进其操纵以提高作物生产力。
