« Previous AbstractInduced sputum abnormalities in gas station attendants    Next AbstractInfluence of palladium content dispersed in the TiO(2) photocatalyst for degradation of volatile organic compounds in gas emission »

Nat Prod Res

Title:		Allelopathic activity and chemical constituents of extracts from roots of Euphorbia heterophylla L
Author(s):		da Silva UP; Furlani GM; Demuner AJ; da Silva OLM; Varejao EVV;
Address:		"a Laboratory of Analysis and Synthesis of Agrochemicals, Department of Chemistry , Universidade Federal de Vicosa , Vicosa , Brazil. b Instituto de Botanica , Universidade de Sao Paulo , Sao Paulo , Brazil"
Journal Title:		Nat Prod Res
Year:		2019
Volume:		20180409
Issue:		18
Page Number:		2681 - 2684
DOI:		10.1080/14786419.2018.1460829
ISSN/ISBN:		1478-6427 (Electronic) 1478-6419 (Linking)
Abstract:		"Euphorbia heterophylla L. is regarded as a major weed worldwide. Its high aggressiveness in agricultural environment prompted us to investigate the allelopatic activity and chemical constitution of extracts from roots of this plant. Hexane extract showed low phytotoxic activity. Methanol extract at 2.0 mg mL(-1) inhibited 100% of germination, root and shoot growth of the indicator plants Sorghum bicolor and Lactuca sativa. beta-sitosterol, stigmasterol, and esters of lupeol, germanicol, taraxasterol, pseudotaraxasterol, alpha-amyrin and beta-amyrin were isolated from the hexane extract and their structures elucidated on the basis of MS and (1)H, (13)C and DEPT-135 NMR data. GC-MS analysis of the derivatized methanol extract allowed for identifying a series of allelopathic organic acids potentially involved in allelopathic interactions of E. heterophylla. This is the first study on the allelopathic activity of extracts and identification of metabolites from roots of E. heterophylla"
Keywords:		Allelopathy Euphorbia/*chemistry Gas Chromatography-Mass Spectrometry Germination/drug effects Hexanes/chemistry Lettuce/drug effects/growth & development Magnetic Resonance Spectroscopy Methanol/chemistry Molecular Structure Oleanolic Acid/analogs & deri;
Notes:		"Medlineda Silva, Ueveton Pimentel Furlani, Gabriela Milane Demuner, Antonio Jacinto da Silva, Otavio Luis Marques Varejao, Eduardo Vinicius Vieira eng Video-Audio Media England 2018/04/10 Nat Prod Res. 2019 Sep; 33(18):2681-2684. doi: 10.1080/14786419.2018.1460829. Epub 2018 Apr 9"