LIU Lu,XIAO Zhina,LIU Fei,et al.Floral Scent Biosynthesis and Its Regulation in Petunia[J].Northern Horticulture,2016,40(01):181-185.[doi:10.11937/bfyy.201601047]
矮牵牛花香生物合成及其调控研究进展
- Title:
- Floral Scent Biosynthesis and Its Regulation in Petunia
- Keywords:
- Petunia hybrida; floral scent biosynthesis; transcription factor; MYB gene family; shikimate pathway
- 文献标志码:
- A
- 摘要:
- 植物花香成分主要包括萜类、苯基/苯丙烷类和脂肪酸衍生物三大类。对观赏植物而言，花香是其重要品质，花香研究已成为热门研究领域之一。近年来，由于矮牵牛‘Mitchell’等品种香气浓郁，成为研究花香合成与调节的模式材料。矮牵牛花香的主要成分为苯基/苯丙烷类，其合成的上游为莽草酸路径，主要合成部位为花瓣，花香合成和释放具有典型昼夜节律性，并受衰老激素乙烯调节。另外，人们还发现了一些转录因子参与调节花香合成酶基因的表达，其中主要为R2R3 类MYB基因家族成员。现综述了矮牵牛花香生物合成的特点、关键酶以及调节花香的转录因子，以期为植物花香性状的改良提供参考。
- Abstract:
- Plant fragrances consist of terpenoids，benzenoids，and fatty acid derivatives.Floral scent is the important character for ornamental plant and has become one of hot points of research field.Petunia is the model plant in many research fields，including flower scent.Petunia ‘Mitchell’ predominantly emits volatile phenylpropanoid/benzenoids.The shikimate pathway links carbohydrate metabolism to the synthesis of aromatic amino acids，which could in turn act as precursors for various primary and secondary metabolites，such as benzenoids.In Petunia，some enzymes of the volatile phenylpropanoid/benzenoid pathway have been shown to mainly be present in the epidermal cells of petals.Synthesis of floral scent in petunia is typical circadian rhythm and is regulated by ethylene.In addition，recent reports show that some R2R3 MYB transcription factor play important roles in regulation synthesis of floral scent in petunia.In this paper，the characters and the key enzymes of flower scent biosynthesis，and the trans-factors of its regulation were reviewed in order to contribute to improving the traits of the floral scent in ornamental plants.
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备注/Memo
第一作者简介：刘璐（1991-），女，山西忻州人，硕士研究生，研究方向为观赏植物遗传育种与生物技术。E-mail:405519082@qq.com.责任作者：余义勋（1973-），男，河南新县人，博士，教授，研究方向为观赏植物遗传育种与生物技术。E-mail：yuyixun@scau.edu.cn.基金项目：国家自然科学基金资助项目（31170653，31270736，31470700)。