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Ursolic acid and cis-tiliroside produced by Merremia tomentosa affect oviposition of Leucoptera coffeella on coffee plants

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dc.contributor.author Santos Júnior, Helvécio M.
dc.contributor.author Lopes, Karina C.
dc.contributor.author Alves, Dejane S.
dc.contributor.author Carvalho, Geraldo A.
dc.contributor.author Oliveira, Denilson F.
dc.date.accessioned 2022-04-11T11:49:04Z
dc.date.available 2022-04-11T11:49:04Z
dc.date.issued 2018
dc.identifier.citation SANTOS JÚNIOR, H. M. et al. Ursolic acid and cis-tiliroside produced by Merremia tomentosa affect oviposition of Leucoptera coffeella on coffee plants. Química Nova, São Paulo, v. 41, n. 3, p. 302-309, 2018. pt_BR
dc.identifier.issn 1678-7064
dc.identifier.uri http://dx.doi.org/10.21577/0100-4042.20170185 pt_BR
dc.identifier.uri http://www.sbicafe.ufv.br/handle/123456789/13458
dc.description.abstract To contribute to the development of new products to control the coffee leaf miner (Leucoptera coffeella), which is a major pest for coffee plants, this work aimed to select plant species able to produce substances active against this insect and to identify the active substances in the selected plant and their protein targets in the insect. Among the extracts of nineteen plant species, only that from leaves of Merremia tomentosa (Choisy) Hall. f. (Convolvulaceae) reduced the oviposition of L. coffeella on leaves of coffee plants. This extract was submitted to successive fractionation steps to achieve the isolation and identification of two active substances, ursolic acid (UA) and cis-tiliroside (CT). An in silico study showed that UA inhibits glycogen phosphorylases (GP) by binding to their allosteric site, while CT probably inhibits xanthine dehydrogenases (XT). As both GP and XT appear to be essential enzymes for insects, these results suggest that, during evolution, L. coffeella learned to identify plants producing inhibitors of these enzymes to avoid oviposition on such plants. Thus, both UA and CT have potential to be used as lead compounds in the development of new products for the control of the coffee leaf miner. pt_BR
dc.format pdf pt_BR
dc.language.iso en pt_BR
dc.publisher Sociedade Brasileira de Química pt_BR
dc.relation.ispartofseries Química Nova;v.41, n.3, 2018
dc.rights Open Access pt_BR
dc.subject Coffee leaf miner pt_BR
dc.subject Coffea arabica pt_BR
dc.subject Glycogen phosphorylase pt_BR
dc.subject Xanthine dehydrogenase pt_BR
dc.subject.classification Cafeicultura::Pragas, doenças e plantas daninhas pt_BR
dc.title Ursolic acid and cis-tiliroside produced by Merremia tomentosa affect oviposition of Leucoptera coffeella on coffee plants pt_BR
dc.type Artigo pt_BR

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