RT journal article
T1 Search of New Tools for Weed Control Using Piptocarpha rotundifolia, a Dominant Species in the Cerrado
A1 Anese, Simoni
A1 Rial Cumbrera, Carlos
A1 Varela Montoya, Rosa María
A1 Torres Martínez, Ascensión
A1 González Molinillo, José María
A1 Macías Domínguez, Francisco Antonio
A2 Química Orgánica
K1 allelochemicals
K1 piptocarphin A
K1 isolation
K1 phytotoxicity
K1 weed control
AB Piptocarpha rotundifolia (Less.) Baker stands out as one of the species with the highest frequency, density, and relative dominance in the Cerrado formations. However, no phytochemical studies have been carried out with this species to date. The aim of this study was to evaluate the phytotoxic activity of P. rotundifolia leaves in the search of new environmentally friendly tools for weed control. Thus, a wheat coleoptile and phytotoxic bioassay, using relevant agricultural weeds, was used to identify the most active extracts and fractions. The subsequent purification process allowed the isolation of 11 compounds, the phytotoxicity of which was evaluated in terms of wheat coleoptile elongation and with the most sensitive weeds. Piptocarphin A was found to be the major compound and the most active. To confirm its phytotoxic potential, the effect on Ipomea grandifolia grown in a hydroponic culture and on metaxylem cells was studied. The results obtained in this study demonstrate that the inhibitory activity displayed by P. rotundifolia leaf extract is mainly due to the presence of piptocarphin A. The phytotoxicity shown by P. rotundifolia leaf extract, and the isolated compounds, on weeds could provide new tools for weed control in agricultural fields.
PB AMER CHEMICAL SOC
SN 0021-8561
YR 2021
FD 2021-08
LK http://hdl.handle.net/10498/25876
UL http://hdl.handle.net/10498/25876
LA eng
NO This research was supported by CAPES - Coordination for the Improvement of Higher Education Personnel (Brazil) (Project 88881.119937/2016-01) and "Ministerio de Economia, Industria y Competitividad" (MINEICO), Spain, Project AGL201788-083-R.
DS Repositorio Institucional de la Universidad de Cádiz
RD 08-nov-2026