RT journal article T1 Phytotoxicity evaluation of sesquiterpene lactones and diterpenes from species of the Decachaeta, Salvia and Podachaenium genera A1 Bautista, Elihu' A1 Ortega Hernández, Alfredo A1 Rial Cumbrera, Carlos A1 Varela Montoya, Rosa María A1 González Molinillo, José María A1 Macías Domínguez, Francisco Antonio A2 Química Orgánica K1 Allelopathy K1 Heliangolides K1 guaianolide K1 bioassay K1 natural products AB Decachaeta, Salvia and Podachaenium genera are known for their wide variety of biological activities. Synthetic herbicides have caused a variety of environmental and resistance problems. Natural products represent an important alternative to combat such issues. Sesquiterpene lactones and diterpenes are families of bioactive natural products for which a range of activities have been described. The bioactivities of nine sesquiterpene lactones, eight heliangolides, one guaianolide and twenty two diterpenes isolated from species of the Decachaeta, Salvia and Podachaenium genera were tested by applying a methodical procedure that involves assays of compounds on etiolated wheat coleoptiles (Triticum aestivum), Standard Target Species (STS) and two important weeds (barnyardgrass and brachiaria). The results clearly show that all of the sesquiterpene lactones studied were active on coleoptiles. In addition, six lactones were phytotoxic on both STS and weeds, meaning that these compounds could be used in the development of natural herbicide models. PB Phytochemistry Letters YR 2016 FD 2016-09 LK http://hdl.handle.net/10498/20348 UL http://hdl.handle.net/10498/20348 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 07-nov-2026