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Title: Evaluation of p-benzoquinones derivatives as post-emergent plant growth inhibitor
Other Titles: Avaliação de derivados p-benzoquinonas como inibidores pós-emergentes do crescimento vegetal
Keywords: Fluorescence of chlorophyll a
Photosystem II
Plant growth
Clorofila a
Fotossistema II
Crescimento de planta
Issue Date: May-2020
Publisher: Brazilian Journals Publicações de Periódicos e Editora Ltda
Citation: 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.
Abstract: 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.
Appears in Collections:DQI - Artigos publicados em periódicos

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