香雪兰花色花香物质合成和调控研究进展
作者:
作者单位:

东北师范大学生命科学学院分子表观遗传学教育部重点实验室,长春130024

作者简介:

研究方向为植物分子遗传学,E-mail:zhangj656@nenu.edu.cn

通讯作者:

高 翔,研究方向为经济作物重要农艺形状转录调控网络解析,E-mail:gaoxiang424@163.com
王 丽,研究方向为植物花香花色代谢、真菌免疫学、肿瘤血管发生机制,E-mail:Wanglee57@163.com

中图分类号:

基金项目:

国家自然科学基金(31972445,31670382)


The Biosynthesis and Regulation of Floral Volatile Organic Compounds and Pigments in Freesia hybrida
Author:
Affiliation:

Key Laboratory of Molecular Epigenetics of MOE, School of Life Sciences, Northeast Normal University, Changchun 130024

Fund Project:

Foundation project: National Natural Science Foundation of China (31972445,31670382)

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    摘要:

    花香和花色是花卉作物重要的观赏性状,是决定花卉品质、影响花卉经济价值的关键因素,因此,培育花色丰富、花香怡人的花卉新品种长期以来都是园艺工作者的主要育种目标。香雪兰作为球根切花品种的代表,其花朵颜色鲜艳、香气怡人,是研究植物花色花香的良好材料。本文综述了香雪兰花色花香合成代谢通路以及转录调控的研究进展,重点介绍了控制香雪兰花色苷合成的关键结构基因FhCHS1FhDFRFh3GTFh5GT和萜类物质合成的关键结构基因FhTPS1~FhTPS14,此外还介绍了野生种TPS基因的天然等位基因变体序列之间的微小氨基酸差异驱动的酶的催化活性和产物特异性,为阐明花香种间遗传差异奠定了基础。花色苷的合成除了受到结构基因的调控,也受到MYB-bHLH-WD40的调控,花香的合成则受到FhMYB21L2和FhMYC2的调控,此外FhMYB21L2协同调控了黄酮醇合酶基因FhFLS2的表达,最后展望了花色苷和萜类物质合成的潜在应用前景。

    Abstract:

    Floral fragrance and flower color are important ornamental traits of flower crops, which are key factors that determine flower quality and affect flower economic values. Therefore, cultivating new flower varieties with rich floral colors and pleasant flowers has long been the main breeding goal of horticulturists. As a representative of bulb cut flower varieties, Freesia hybrida has bright flowers and pleasant aroma. The key structural genes FhCHS1FhDFRFh3GTFh5GT that control the synthesis of anthocyanin in Freesia and the key structural genes for terpene synthesis, FhTPS1 to FhTPS14, are highlighted, in addition to the fact that small amino acid differences between the sequences of the natural variants of the TPS genes in the wild species drive the enzyme's catalytic activity and product specificity, laying the groundwork for elucidating genetic differences among floral scents species. The synthesis of anthocyanin is also regulated by MYB-bHLH-WD40 in addition to structural genes, and the synthesis of floral scent is regulated by FhMYB21L2 and FhMYC2, in addition to the co-regulation of the expression of the flavonol synthase gene, FhFLS2, by FhMYB21L2. Finally, we look ahead to the potential application of the synthesis of anthocyanin and terpenoids.

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张佳,李月庆,单晓彤,等.香雪兰花色花香物质合成和调控研究进展[J].植物遗传资源学报,2024,25(5):679-694.

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  • 收稿日期:2023-12-29
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  • 在线发布日期: 2024-05-17
  • 出版日期: 2024-05-10
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