Chemical Characterization and Phytotoxic Effects of the Aerial Parts of Ruzigrass (Urochloa ruziziensis).

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2020
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Abstract
Studies of the phytotoxic effects between plants can be a crucial tool in the discovery of innovative compounds with herbicide potential. In this sense, we can highlight ruzigrass (Urochloa ruziziensis), which is traditionally used in the crop rotation system in order to reduce weed emergence. The aim of this work was to characterize the secondary metabolites of ruzigrass and to evaluate its phytotoxic effects. In total, eight compounds were isolated: friedelin, oleanolic acid, α-amyrin, 1-dehydrodiosgenone, sitosterol and stigmasterol glycosides, tricin and p-coumaric acid. Phytotoxic effects of the crude methanolic extract and fractions of ruzigrass were assessed using germination rate, initial seedling growth, and biomass of Bidens pilosa, Euphorbia heterophylla and Ipomoea grandifolia. Chemometric analysis discriminated the weed species into three groups, and B. pilosa was the most affected by fractions of ruzigrass. The phytotoxic activities of 1-dehydrodiosgenone, tricin, and p-coumaric acid are also reported, and p-coumaric acid and 1-dehydrodiosgenone were active against B. pilosa.
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pereira-moreno2020chemicalchemistry Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Pereira Moreno, Beatriz;Mantovanelli, Gislaine Cristiane;Lopes Ricardo, Letycia;Silva, Adriano Antônio;Silvério De Oliveira, Rubem;Ishii-Iwamoto, Emy Luiza;Sarragiotto, Maria Helena;Baldoqui, Debora Cristina;
Journal Chemistry & biodiversity
Year 2020
DOI
10.1002/cbdv.201900694
URL
Keywords
biological activity poaceae phytotoxicity chemometric analysis euphorbia heterophylla bidens pilosa ipomoea grandifolia

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