Chemical profile and defensive function of the latex of Euphorbia peplus
Hua, Juan1,2,3; Liu, Yan1,2; Xiao, Chao-Jiang1,2,3; Jing, Shu-Xi1,2; Luo, Shi-Hong1,2; Li, Sheng-Hong1,2
2017-04-01
发表期刊PHYTOCHEMISTRY
卷号136页码:56-64
摘要Plant latex is an endogenous fluid secreted from highly specialized laticifer cells and has been suggested to act as a plant defense system. The chemical profile of the latex of Euphorbia peplus was investigated. A total of 13 terpenoids including two previously unknown diterpenoids, (2S*,3S*,4R*,5R*,6R*,8R*,l1R*,13S*,14S*,15R*, 16R*)-5,8,15-triacetoxy-3-benzoyloxy-11,16-dihydroxy-9oxopepluane and (2R*,3R*, 4S*,5R*,7S*,8S*,9S*,l3S*,14S*,15R*)-2,5,8,9,14-pentaacetoxy-3-benzoyloxy15-hydroxy-7-isobutyroyloxyjatropha-6(17),11E-diene), ten known diterpenoids, and a known acyclic triterpene alcohol peplusol, were identified, using HPLC and UPLC-MS/MS analyses and through comparison with the authentic compounds isolated from the whole plant. The diterpenoids exhibited significant antifeedant activity against a generalist plant-feeding insect, the cotton bollworm (Helicoverpa armigera), with EC50 values ranging from 0.36 to 4.60 mu g/cm(2). In particular, (2R*,3R*,4S*,5R*,7S*,8S*,9S*,l3S*,14S*,15R*)-2,5,9,14-tetraacetoxy-3-benzoyloxy-8,15-dihydroxy-7- isobutyroyloxyjatropha-6(17),11E-diene and (2R*,3R*, 4S*,5R*,7S*,8S*,9S*,l3S*,14S*,15R*)-2,5,14triacetoxy-3-benzoyloxy-8,15-dihydroxy-7-isobutyroyloxy-9-nicotinoyloxyjatropha-6(17),11E-diene had EC50 values of 0.36 and 0.43 mu g/cm(2), respectively, which were approximately 7-fold more potent than commercial neem oil (EC50 = 2.62 mu g/cm(2)). In addition, the major peplusol showed obvious antifungal activity against three strains of agricultural phytopathogenic fungi, Rhizoctonia solani, Colletotrichum litchi and Fusarium oxysporum f. sp. niveum. The results indicated that terpenoids in the latex of E. peplus are rich and highly diversified, and might function as constitutive defense metabolites against insect herbivores and pathogens for the plant. (C) 2016 Elsevier Ltd. All rights reserved.
关键词Euphorbia Peplus Euphorbiaceae Latex Terpenoids Defensive Function
资助信息National Science Fund for Distinguished Young Scholars(31525005); National Basic Research Program of China (973 Program)(2013CB127505); National Natural Science Foundation of China(31200263); Youth Innovation Promotion Association of the Chinese Academy of Sciences
DOI10.1016/j.phytochem.2016.12.021
收录类别SCI
语种英语
WOS研究方向Biochemistry & Molecular Biology ; Plant Sciences
WOS类目Biochemistry & Molecular Biology ; Plant Sciences
WOS记录号WOS:000397354700007
引用统计
被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/51060
专题植物化学与西部植物资源持续利用国家重点实验室
作者单位1.Chinese Acad Sci, Kunming Inst Bot, State Key Lab Phytochem & Plant Resources West Ch, Kunming 650201, Peoples R China
2.Yunnan Key Lab Nat Med Chem, Kunming 650201, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Hua, Juan,Liu, Yan,Xiao, Chao-Jiang,et al. Chemical profile and defensive function of the latex of Euphorbia peplus[J]. PHYTOCHEMISTRY,2017,136:56-64.
APA Hua, Juan,Liu, Yan,Xiao, Chao-Jiang,Jing, Shu-Xi,Luo, Shi-Hong,&Li, Sheng-Hong.(2017).Chemical profile and defensive function of the latex of Euphorbia peplus.PHYTOCHEMISTRY,136,56-64.
MLA Hua, Juan,et al."Chemical profile and defensive function of the latex of Euphorbia peplus".PHYTOCHEMISTRY 136(2017):56-64.
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