柑橘果实糖积累特征及蔗糖转运机制研究进展  

Research Advanced on Character of Sugar Accumulation and Mechanism of Sucrose Transport in Citrus Fruit

作　　者：吴孔杰 胡承孝[1,2] 谭启玲 孙学成[1] 赵小虎[1] 武松伟[1,2] WU Kongjie;HU Chengxiao;TAN Qiling;SUN Xuecheng;ZHAO Xiaohu;WU Songwei(College of Resources and Environment,Huazhong Agricultural University,Wuhan 430070,China;Key Laboratory of Horticultural Plant Biology,Ministry of Education,Huazhong Agricultural University,Wuhan 430070,China)

机构地区：[1]华中农业大学资源与环境学院,武汉430070 [2]园艺植物生物学教育部重点实验室,武汉430070

出　　处：《园艺学报》2022年第12期2543-2558,共16页Acta Horticulturae Sinica

基　　金：国家重点研发计划项目(2019YFD1000103);国家自然科学基金项目(32001986);中央高校基本科研业务费专项基金项目(2662022ZHQD002);国家现代农业产业技术体系建设专项资金项目(CARS-26)。

摘　　要：糖是决定柑橘果实品质的重要因子,阐明柑橘果实糖积累特征及其调控机制有助于果实糖积累的精准调控。本文全面综述了柑橘果实糖累积的机制,总结了不同糖积累型柑橘果实中糖积累差异、糖随果实发育的积累特征及糖与其代谢相关酶活的关系,并整合构建了蔗糖积累型和己糖积累型的代谢差异模型。同时系统阐述了蔗糖由源叶合成到果实库器官的储存过程,主要包括韧皮部装载、卸载、运输以及蔗糖在果实液泡中的储存等过程,并绘制了蔗糖从“源”到“库”的转运模式图。Sugar is an important factor that determines fruit quality of citrus.Illustrating the characteristic and regulation mechanism of citrus fruit sugar metabolism and transport will greatly contribute to regulating sugar accumulation accurately.In this paper,the mechanisms underlying sugar accumulation were comprehensively reviewed,we also summarized the differences of fruit sugar accumulation in various citrus varieties,the characteristics of sugar accumulation with fruit development and the relationship between sugar and the related enzyme activities.Subsequently,a model of metabolic differences between sucrose accumulation type and hexose accumulation type was mapped in citrus.Moreover,the storage process of sucrose from leaf(source organ)to fruit(sink organ)was described systematically,including phloem loading,unloading,transport and sucrose storage in fruit vacuole.Finally,a model of sugar transport from source to sink was constructed in citrus.

关 键 词：柑橘 糖 蔗糖转运 蔗糖代谢 液泡储存 

分 类 号：S666[农业科学—果树学] Q945[农业科学—园艺学]