Chemical profile and defensive function of the latex of Euphorbia peplus

doi:10.1016/j.phytochem.2016.12.021

	Chemical profile and defensive function of the latex of Euphorbia peplus
	Hua, Juan 1,2,3; Liu, Yan 1,2; Xiao, Chao-Jiang 1,2,3; Jing, Shu-Xi 1,2; Luo, Shi-Hong 1,2; 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
DOI	10.1016/j.phytochem.2016.12.021
收录类别	SCI
语种	英语
WOS记录号	WOS:000397354700007
引用统计
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
推荐引用方式 GB/T 7714	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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