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Título: | Evaluation of p-benzoquinones derivatives as post-emergent plant growth inhibitor |
Título(s) alternativo(s): | Avaliação de derivados p-benzoquinonas como inibidores pós-emergentes do crescimento vegetal |
Palavras-chave: | Fluorescence of chlorophyll a Herbicide JIP-test Photosystem II Plant growth Clorofila a Herbicidas JIP-teste Fotossistema II Crescimento de planta |
Data do documento: | Mai-2020 |
Editor: | Brazilian Journals Publicações de Periódicos e Editora Ltda |
Citação: | LACERDA, J. W. F. et al. Evaluation of p-benzoquinones derivatives as post-emergent plant growth inhibitor. Brazilian Journal of Development, Curitiba, v. 6, n. 5, p. 32516-32530, mai. 2020. DOI: 10.34117/bjdv6n5-628. |
Resumo: | Eight p-benzoquinones derivatives (1-8) were synthesized and evaluated as photosynthesis and plant growth (dry biomass) inhibitors through semi in vivo and in vivo assay. The photosynthetic parameters provided by the JIP-test were based on the major steps of the photosynthetic process: photon absorption (ABS), energy capture (TR), electron transport (ET) and reduction of photosystem II (PS II) final acceptors (RE). Compounds 6, 7 and 8 decresead the PI(abs) parameter by 82, 75, 42% and incresead the ET0/CS0 parameter by 37, 20 and 25%, respectively. These results suggested that 6-8 inhibit the electron transport chain at PS II in both semi in vivo and in vivo assays. Futhermore, compounds 6 and 7 reduced the plant growth by 52 and 77%, respectively. Therefore, the derivatives of p-benzoquinone not only demonstrated appreciable activity as inhibitors of photosynthesis by acting on the electron transport chain on the acceptor side of PS II, but also inhibit the plant growth. |
URI: | https://doi.org/10.34117/bjdv6n5-628 http://repositorio.ufla.br/jspui/handle/1/46420 |
Aparece nas coleções: | DQI - Artigos publicados em periódicos |
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