Bioactive steroids from Oryza sativa L

Steroids
Francisco A MacíasJosé M G Molinillo

Abstract

Rice is one of the most interesting crops in the world from both the social and the economic point of views. The monoculture practices along with the heavy use of herbicides are characteristic of modern agriculture and are inducing the appearance of tolerant and/or herbicide resistant weed biotypes. This is the case the world's main weed of rice barnyardgrass (Echinochloa crus-galli). Alternative strategies for weed suppression consist of the use of chemicals from rice due to necessity of obtaining new herbicides with new modes of action that could prevent resistance phenomena. In order to carry out a study that guides to the isolation of the most active compounds from rice, different extracts were achieved, and their activities evaluated. So, all the plant material was divided into three parts: fresh plant, dried plant, and fresh plant from Pluviotron. The aerial part was separated from roots in all cases and extracted in water, in organic solvents as well as with the Pluviotron device. The activity of the 12 extracts obtained was evaluated using a generalist bioassay, wheat etiolated coleoptiles bioassay, and a phytotoxic bioassay on barnyardgrass as target species. The bioactive extracts were fractionated and 15 compounds we...Continue Reading

Citations

Sep 4, 2012·Journal of Plant Physiology·Haibin HeWenxiong Lin
Jan 2, 2007·Pest Management Science·Regina G Belz
Aug 14, 2013·Chemistry & Biodiversity·Paula NovaesFrancisco A Macías
Apr 15, 2016·Journal of Agricultural and Food Chemistry·Kai GuoBo Qin
Aug 12, 2014·Natural Product Research·Hao-Yu TangJin-Ming Gao
Apr 6, 2020·Journal of the Science of Food and Agriculture·Mogana Das Murtey, Azman Seeni
Jul 10, 2007·European Journal of Medicinal Chemistry·Valery M Dembitsky
Sep 24, 2008·Journal of Agricultural and Food Chemistry·Luiz C A BarbosaGiuseppe Forlani

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