Allelopathic activity and chemical constituents of extracts from roots of Euphorbia heterophylla L.
Nat Prod Res
; 33(18): 2681-2684, 2019 Sep.
Article
in En
| MEDLINE
| ID: mdl-29629832
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. ß-sitosterol, stigmasterol, and esters of lupeol, germanicol, taraxasterol, pseudotaraxasterol, α-amyrin and ß-amyrin were isolated from the hexane extract and their structures elucidated on the basis of MS and 1H, 13C 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.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Pheromones
/
Plant Extracts
/
Euphorbia
Language:
En
Journal:
Nat Prod Res
Year:
2019
Document type:
Article
Affiliation country:
Brazil