RT journal article
T1 Agave Steroidal Saponins as Potential Bioherbicides
A1 García Durán, Alexandra
A1 Benito Jareño, Javier
A1 Macías Domínguez, Francisco Antonio
A1 Simonet Morales, Ana María
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
A2 Química Orgánica
K1 Agave
K1 saponin
K1 extraction
K1 HMAI
K1 UPLC-MS
K1 phytotoxicity
K1 weed
AB Agave saponins are a valuable resource for the prospective development of new forms ofagrochemicals. The extraction method was optimized and applied to 17 Agave species. Thirteensaponin fractions (SFs) were assayed on wheat etiolated coleoptiles, and analysed using UPLC-QTOFMSE,NMR spectroscopy and the HMBC method for aglycone identification (HMAI). Six SFs wereassayed on standard target species (STS) and weeds. The new extraction method reduces costs toobtain SFs with the same activity. The tested SFs assayed on etiolated wheat coleoptiles that belongto the subgenus Agave were among those with the highest activity levels. The combination of HMAItogether with UPLC-MS allowed the identification of 20 aglycones in the SFs, and no isolation orhydrolysis of the saponins was required. A Principal Component Analysis (PCA) showed that forthe active SFs the structural key would be the length of their sugar chain. The presence of a carbonylgroup at C-12 implied an enhancement in phytotoxic activity. Six SFs were assayed on seeds, andno activity on Solanum lycopersicum (tomato) was observed; however, good activity profiles wereobtained on weed E. crus-galli (IC50 < 80 ppm), better than the commercial herbicide Logran®. Thesefindings represent a possible lead for the development of natural herbicides through the use ofsaponins of subgenus Agave species.
PB MDPI
SN 2073-4395
YR 2021
FD 2021-12
LK http://hdl.handle.net/10498/26414
UL http://hdl.handle.net/10498/26414
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 06-nov-2026