植物 SWEET 基因家族促进病害发生的研究进展

Advances in the study of plant SWEET gene family for disease development

糖的运输和分配在调节植物的生长发育和应对生物和非生物胁迫中起着关键作用。在植物-病原菌相互作用过程中,存在着对糖的竞争,这种竞争由膜运输体控制且对植物和病原互作的结果具有决定性作用。SWEET糖转运蛋白是细胞外病原菌的靶向目标,病原菌通过修改其表达水平以获得生长所需的糖分营养。本文阐述了植物中SWEET家族的分布和结构,归纳总结了SWEET在细菌、真菌和卵菌入侵寄主植物过程中所扮演的角色,最后展望了通过基因工程手段操纵SWEET基因的表达对于开发抗病栽培品种的前景。

Sugar transport and distribution play a key role in regulating plant development and responding to biotic and abiotic stresses.In the process of plant-pathogen interactions,there is competition for sugars,which is controlled by membrane transporters and is decisive for the outcome of plant-pathogen interactions.SWEET sugar transporters are targeted by extracellular pathogens,which modify their expression levels to obtain sugar nutrients for growth.This paper firstly described the distribution and structure of the SWEET family in plants.Secondly,it summarized the role of SWEET in the invasion of host plants by bacteria,fungi and oomycetes.Finally,the paper also looked at the prospects of manipulating SWEET expression by means of genetic engineering for the development of disease-resistant cultivars.