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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Natural products from Pluchea sagittalis act as inhibitors of photosynthesis in vitro

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Author(s):
Carvalho, Ana C. [1] ; Lira, Joao C. S. [1] ; Pereira, Thais M. [1] ; Silva, Sebastiao C. [2] ; Simote-Silva, Simone Y. [2] ; Oliveira, Fernando K. D. [2] ; King-Diaz, Beatriz [3] ; Lotina-Hennsen, Blas [3] ; Veiga, Thiago A. M. [1]
Total Authors: 9
Affiliation:
[1] Univ Fed Sao Paulo UNIFESP, Dept Quim, Diadema - Brazil
[2] Univ Fed Sul & Sudeste Para UNIFESSPA, Inst Ciencias Exatas, Maraba - Brazil
[3] Univ Nacl Autonoma Mexico, Dept Bioquim, Fac Quim, Ciudad Univ, Mexico City, DF - Mexico
Total Affiliations: 3
Document type: Journal article
Source: NATURAL PRODUCT RESEARCH; v. 33, n. 4, p. 557-562, FEB 16 2019.
Web of Science Citations: 1
Abstract

Four compounds were isolated from roots and aerial parts of Pluchea sagittalis (Asteraceae), 3, 5-dihydroxy-6, 7, 3 `, 4 `-tetramethoxiflavunol (1), 5-hydroxymethylfurfural (2), 3, 4-dimethoxybenzaldehyde (3) and 2, 3, 4-trihydroxybenzaldeyde (4). Their herbicidal potential was detected by polarographic techniques. All of them inhibited the non-cyclic electron transport on basal, phosphorylating and uncoupled conditions from H2O to methylviologen (MV); thus, they act as Hill reaction inhibitors. Studies on fluorescence of chlorophyll a (ChL a) indicated they have different modes of interaction and inhibition sites on the photosystem II electron transport chain; 1-3 have interacted with the acceptor side while 4 has interacted at the donor side. {[}GRAPHICS] . (AU)