Evaluation of antidesmone alkaloid as a photosynthesis inhibitor

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dc.contributor.author Sampaio, Olivia Moreira
dc.contributor.author de Castro Lima, Murilo Marinho
dc.contributor.author Veiga, Thiago Andre Moura [UNIFESP]
dc.contributor.author King-Diaz, Beatriz
dc.contributor.author das Gracas Fernandes da Silva, Maria Fatima
dc.contributor.author Lotina-Hennsen, Blas
dc.date.accessioned 2020-07-31T12:47:24Z
dc.date.available 2020-07-31T12:47:24Z
dc.date.issued 2016
dc.identifier http://dx.doi.org/10.1016/j.pestbp.2016.04.006
dc.identifier.citation Pesticide Biochemistry And Physiology. San Diego, v. 134, p. 55-62, 2016.
dc.identifier.issn 0048-3575
dc.identifier.uri https://repositorio.unifesp.br/handle/11600/56805
dc.description.abstract Antidesmone, isolated from Waltheria brachypetala Turcz., owns special structural features as two alpha,beta-unsaturated carbonyl groups and a side alkyl chain that can compete with the quinones involved in the pool of plastoquinones at photosystem II (PSII). In this work, we showed that the alkaloid is an inhibitor of Hill reaction and its target was located at the acceptor side of PSII. Studies of chlorophyll (Chl) a fluorescence showed a J-band that indicates direct action of antidesmone in accumulation of Q(A)(-) (reduced plastoquinone A) due to the electron transport blocked at the QB (plastoquinone B) level similar to DCMU. In vivo assays indicated that antidesmone is a selective post-emergent herbicide probe at 300 mu M by reducing the biomass production of Physalis ixacarpa plants. Furthermore, antidesmone also behaves as pre-emergent herbicide due to inhibit Physalis ixacarpa plant growth about 60%. Antidesmone, a natural product containing a 4(1H)-pyridones scaffold, will serve as a valuable tool in further development of a new class of herbicides. (C) 2016 Elsevier Inc. All rights reserved. en
dc.description.sponsorship DGAPA-UNAM
dc.description.sponsorship Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.format.extent 55-62
dc.language.iso eng
dc.publisher Academic Press Inc Elsevier Science
dc.relation.ispartof Pesticide Biochemistry And Physiology
dc.rights Acesso restrito
dc.subject Antidesmone en
dc.subject Chlorophyll a en
dc.subject Photosystem II en
dc.subject ATP synthesis en
dc.subject Herbicide en
dc.subject Photosynthetic inhibitor en
dc.title Evaluation of antidesmone alkaloid as a photosynthesis inhibitor en
dc.type Artigo
dc.description.affiliation Fed Univ Mato Grosso UFMT, Dept Chem, Cuiaba, MT, Brazil
dc.description.affiliation Fed Univ Soo Carlos UFSCar, Dept Chem, Sao Carlos, SP, Brazil
dc.description.affiliation Fed Univ Sao Paulo UNIFESP, Inst Environm Chem & Pharmaceut Sci, Sao Paulo, SP, Brazil
dc.description.affiliation Univ Nacl Autonoma Mexico, Fac Quim, Dept Biochem, Mexico City 04510, DF, Mexico
dc.description.affiliationUnifesp Institute of Environmental, Chemistry and Pharmaceutical Sciences, Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil
dc.description.sponsorshipID DGAPA-UNAM: IT102012
dc.identifier.doi 10.1016/j.pestbp.2016.04.006
dc.description.source Web of Science
dc.identifier.wos WOS:000389967600008
dc.coverage San Diego
dc.citation.volume 134


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