Defensive Specialized Metabolites from the Latex of Euphorbia jolkinii

doi:10.1007/s10886-023-01413-6

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	Defensive Specialized Metabolites from the Latex of Euphorbia jolkinii
	Luo,Shihong; Huang,Chunshuai; Hua,Juan; Jing,Shuxi; Teng,Linlin; Tang,Ting; Liu,Yan; Li,Shenghong
	2023
Source Publication	JOURNAL OF CHEMICAL ECOLOGY
ISSN	1573-1561
Abstract	Plant latex is sequestered in laticiferous structures and exuded immediately from damaged plant tissues. The primary function of plant latex is related to defense responses to their natural enemies. Euphorbia jolkinii Boiss. is a perennial herbaceous plant that greatly threaten the biodiversity and ecological integrity of northwest Yunnan, China. Nine triterpenes (1-9), four non-protein amino acids (10-13) and three glycosides (14-16) including a new isopentenyl disaccharide (14), were isolated and identified from the latex of E. jolkinii. Their structures were established on the basis of comprehensive spectroscopic data analyses. Bioassay revealed that meta-tyrosine (10) showed significant phytotoxic activity, inhibiting root and shoot growth of Zea mays, Medicago sativa, Brassica campestris, and Arabidopsis thaliana, with EC50 values ranging from 4.41 +/- 1.08 to 37.60 +/- 3.59 mu g/mL. Interestingly, meta-tyrosine inhibited the root growth of Oryza sativa, but promoted their shoot growth at the concentrations below 20 mu g/mL. meta-Tyrosine was found to be the predominant constituent in polar part of the latex extract from both stems and roots of E. jolkinii, but undetectable in the rhizosphere soil. In addition, some triterpenes showed antibacterial and nematicidal effects. The results suggested that meta-tyrosine and triterpenes in the latex might function as defensive substances for E. jolkinii against other organisms.
Keyword	Plant latex Euphorbia jolkinii meta-Tyrosine Phytotoxic activity Specialized metabolites PLANT LATEX META-TYROSINE DITERPENOIDS ROOTS ACID DERIVATIVES COMPONENTS GLYCOSIDE FRUIT
Subject Area	Biochemistry & Molecular Biology ; Environmental Sciences & Ecology
DOI	10.1007/s10886-023-01413-6
WOS ID	WOS:000941075300001
Citation statistics
Document Type	期刊论文
Identifier	http://ir.kib.ac.cn/handle/151853/74816
Collection	中国科学院昆明植物研究所
Recommended Citation GB/T 7714	Luo,Shihong,Huang,Chunshuai,Hua,Juan,et al. Defensive Specialized Metabolites from the Latex of Euphorbia jolkinii[J]. JOURNAL OF CHEMICAL ECOLOGY,2023.
APA	Luo,Shihong.,Huang,Chunshuai.,Hua,Juan.,Jing,Shuxi.,Teng,Linlin.,...&Li,Shenghong.(2023).Defensive Specialized Metabolites from the Latex of Euphorbia jolkinii.JOURNAL OF CHEMICAL ECOLOGY.
MLA	Luo,Shihong,et al."Defensive Specialized Metabolites from the Latex of Euphorbia jolkinii".JOURNAL OF CHEMICAL ECOLOGY (2023).

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