杜鹃花属植物花香代谢研究进展  

Research Progress on Floral Metabolism of Rhododendron

作　　者：滕新蕾 胡国伟 邹荣娴 陶楚冰 孟羽 肖政 赵宏波[1] TENG Xinei;HU Guowei;ZOU Rongxian;TAO Chubing;MENG Yu;XIAO Zheng;ZHAO Hongbo(College of Landscape Architecture,Zhejiang Agriculture and Forestry University/Zhejiang Provincial Key Laboratory of Germplasm Innovation and Utilization for Garden Plants/Key Laboratory of National Forestry and Grassland Administration on Germplasm Innovation and Utilization for Southern Garden Plants,Hangzhou 311300;Wuchan Zhongda Changle Forest Farm Company,Hangzhou 311300)

机构地区：[1]浙江农林大学风景园林与建筑学院/浙江省园林植物种质创新与利用重点实验室/南方园林植物创新与利用国家林业和草原局重点实验室,杭州311300 [2]物产中大长乐林场有限公司,杭州311300

出　　处：《植物遗传资源学报》2024年第5期727-736,共10页Journal of Plant Genetic Resources

基　　金：浙江省农业新品种选育重大科技专项(2021C02071-2);学校科研发展基金项目(2022LFR079)。

摘　　要：花香是观赏植物重要的观赏性状,杜鹃花作为世界闻名的木本花卉,以花色丰富、花型多样闻名于世,其花香是评价杜鹃花品质的重要指标之一。研究表明萜烯类化合物、醇类、酯类、酮类化合物等是杜鹃花属植物花香化合物的主要成分,这些化合物的释放受到花发育状态、释放部位以及环境条件的影响。萜烯类化合物是杜鹃花属植物最主要的花香成分,萜类合成酶基因是杜鹃花花香物质代谢途径中的主要调控基因,利用基因组结合代谢组学研究发现马银花TPS家族基因远多于其他无香型杜鹃花属植物。深入研究杜鹃花不同种和品种特征花香成分及其生物合成途径,对杜鹃花的芳香育种和综合利用有重要意义。本文论述了杜鹃花属植物香气成分的测定与分析方法、不同亚属杜鹃花资源的香气成分、香气合成释放规律以及香气物质生物合成途径和关键基因,为开展杜鹃花主要花香物质合成代谢的遗传规律研究和芳香品种选育提供参考。Flower fragrance is a significant ornamental feature of ornamental plants.As a worldwide woody flower,Rhododendron is famous because of rich colors and diverse patterns.Its floral fragrance is an important indicator of its quality.Studies have demonstrated that terpenoids,alcohols,esters,and ketones are the main components of rhododendron florets,and the release of these compounds is influenced by flower development,release site,and environmental conditions.Terpenoids are the most important floral components of Rhododendron,and terpenoid synthase gene is the main regulator in the metabolic pathway of floral substances.Through the genomics and metabolomics study,TPS family genes of Rhododendron ovatum were much more than those of other odorless Rhododendron plants.It is of great significance to study the floral composition and biosynthesis pathway in different species and varieties of Rhododendron for aromatic breeding and comprehensive utilization.This study reviewed the determination and analysis methods of floral composition of Rhododendron plants,the aroma components of Rhododendron species in subgenera,the synthesis and release law of aroma,and the biosynthetic pathway of aroma and key genes,which provided reference for the study of the genetic law of the synthesis and metabolism of main floral substances and breeding new varieties with obvious characteristic fragrance in Rhododendron.

关 键 词：杜鹃花 花香成分 生物合成 萜烯类化合物 

分 类 号：S685.21[农业科学—观赏园艺]