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园艺学报 ›› 2021, Vol. 48 ›› Issue (10): 1969-1982.doi: 10.16420/j.issn.0513-353x.2021-0815

• 研究论文 • 上一篇    下一篇

檵木不同叶色形成的化学成分比较研究

陈倩如1, 蔡文淇1, 张霞1, 张大毛1, 李卫东2, 许璐1, 于晓英1,3,**(), 李炎林1,3,**()   

  1. 1湖南农业大学园艺学院,湖南省中亚热带优质花木繁育与利用工程中心,长沙 410128
    2园林花卉种质创新与综合利用湖南省重点实验室,长沙 410128
    3国家教育部园艺作物种质创新与新品种选育工程研究中心,长沙 410128
  • 收稿日期:2021-09-14 修回日期:2021-10-15 出版日期:2021-10-25 发布日期:2021-11-01
  • 通讯作者: 于晓英,李炎林 E-mail:yuxiaoying1578@hunau.net;liyanlin@hunau.net
  • 基金资助:
    国家重点研发计划项目(2019YFD1100404);湖南省科技计划项目(2019TP1033);湖南省科技计划项目(2018TP2007);湖南省自然科学基金项目(2019JJ50280);湖南农业大学项目(SYL201802026);湖南农业大学项目(SYL2019012);湖南农业大学项目(201909);湖南省教育厅项目(18B124);国家级大学生创新创业训练计划项目(202112653017X)

The Comparative Studies on Phytochemicals of Leaf Coloration of Loropetalum chinense var. rubrum

CHEN Qianru1, CAI Wenqi1, ZHANG Xia1, ZHANG Damao1, LI Weidong2, XU Lu1, YU Xiaoying1,3,**(), LI Yanlin1,3,**()   

  1. 1College of Horticulture,Hunan Agricultural University,Hunan Mid-subtropical Quality Plant Breeding and Utilization Engineering Technology Research Center,Changsha 410128,China
    2Hunan Provincial Key Laboratory of Germplasm Innovation and Comprehensive Utilization of Garden Flowers,Changsha 410128,China
    3Engineering Research Center for Horticultural Crop Germplasm Creation and New Variety Breeding,Ministry of Education,Changsha 410128,China
  • Received:2021-09-14 Revised:2021-10-15 Online:2021-10-25 Published:2021-11-01
  • Contact: YU Xiaoying,LI Yanlin E-mail:yuxiaoying1578@hunau.net;liyanlin@hunau.net

摘要:

以3个檵木属优良株系为材料,通过英国皇家园艺协会比色卡(RHSCC)比色、分光色差仪测色、叶片解剖观察、色素含量测定和超高效液相色谱质谱联用(UPLC-MS/MS)技术及迈维代谢自建植物特有数据库(MWDB)和代谢物信息公共平台探讨其叶色呈色的化学机制。结果表明:3个檵木属株系叶色存在显著差异,红花檵木叶片的栅栏组织、海绵组织、气孔的副卫细胞和下表皮细胞分布有花青素苷。红花檵木叶片中总花青素苷与叶绿素总含量的高比值是叶片呈现红色的直接原因。从供试材料中共鉴定出185种类黄酮化合物(包括花青素苷15种、黄酮苷104种、黄酮醇苷39种、黄烷酮苷20种、异黄酮苷7种)和22种除类黄酮以外的多酚类化合物(包括酚酸19种,原花青素3种)。以天竺葵素、矢车菊素、飞燕草素、芍药花素、矮牵牛素和锦葵素为苷元的13种花青素苷是红花檵木呈色的主要色素成分;黄酮苷、黄酮醇苷、黄烷酮苷、异黄酮苷、酚酸、原花青素等非花青素苷类多酚,是影响檵木属植物叶片呈色的辅助色素成分;这些多酚化合物在叶片中含量的显著差异,造成了不同红花檵木品种的叶片呈现出不同的色泽。

关键词: 红花檵木, 类黄酮, 叶色, 代谢组学

Abstract:

Three different superior individuals of Loropetalum plants were used as research materials in this study. The phytochemical mechanism of leaf coloration of L. chinense var. rubrum was investigated with RHSCC colorimetric card colorimetry,spectrophotometer detection method,leaf anatomical structure characteristic,the measurement of pigments content,UPLC-MS/MS technology plus with MetWare metabolism self-built plant-specific DataBase(MWDB)and public metabolite information platform. The results indicated that the leaf color was significant difference among the three different superior individuals. The anthocyanins was distributed in palisade tissue,spongy tissue,accessory cells and lower epidermis of L. chinense var. rubrum. The high ratio of total anthocyanins and chlorophyll content in the leaves was responsible for the red colored leaves of L. chinense var. rubrum. And then a total of 185 flavonoids were identified by UPLC-MS/MS,including 15 anthocyanins,7 isoflavones,104 flavones,20 flavanones and 39 flavonols. And 22 polyphenol acids including of 19 phenolic acids and three proanthocyanidins were also identified together. The 13 anthocyanins,which are belonging to glycosides of peonidin,delphinidin,cyanidin,malvidin and petunidin are the main phytochemicals of leaf pigments in L. chinense var. rubrum. The significant differences in the contents of non-anthocyanins polyphenols such as flavones,flavonols,flavanones,isoflavones,phenolic acids and proanthocyanidins in the leaves of L. chinense var. rubrum,are the auxiliary pigments of leaf coloration difference. It is also the important secondary metabolites for the color difference among dissimilar cultivars(lines)of L. chinense var. rubrum.

Key words: Loropetalum chinense var. rubrum, flavonoids, leaf color, metabonomics

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