Effects of Acetogenins from Annona coriacea on the in Vitro Reactions of Photosynthesis
Por:
Pasqualotto Severino V.G., Souza Simão J.L., Moraes Junqueira J.G., Calheiros de Carvalho A., King-Díaz B., Lotina-Hennsen B., Terezan A.P., Moura Veiga T.A.
Publicada:
1 ene 2020
Resumen:
Our search for candidates for photosynthesis inhibitors is allowing us to report the effect of two acetogenins identified in Annona coriacea Mart. leaves, ACG-A and ACG-B, a non-adjacent bis-THF and a mono-THF types, respectively. This is an important class of natural products which presents biological properties such as anticancer, neurotoxic, larvicidal and insecticidal. However, this is only the second report associated to its herbicidal activity. Their mechanisms of action on the light reactions of the photosynthesis were elucidated by polarographic techniques. Compounds inhibited the noncyclic electron transport on basal, phosphorylating, and uncoupled conditions from H2O to methyl viologen (MV); therefore, they act as Hill reaction inhibitors. Studies on fluorescence of chlorophyll a (ChL a) indicated that they inhibited the acceptor side of PSII between P680 and PQ-pool, exactly as the commercial herbicide DCMU does. © 2020 Wiley-VHCA AG, Zurich, Switzerland
Filiaciones:
Pasqualotto Severino V.G.:
Instituto de Química, Universidade Federal de Goiás (UFG), Goiânia, GO, 74690-900, Brazil
Souza Simão J.L.:
Instituto de Química, Universidade Federal de Goiás (UFG), Goiânia, GO, 74690-900, Brazil
Moraes Junqueira J.G.:
Departamento de Química, Universidade Federal de São Carlos (UFSCar), São Carlos, SP 13565-905, Brazil
Calheiros de Carvalho A.:
Departamento de Química, Universidade Federal de São Paulo (UNIFESP), Diadema, SP 09972-270, Brazil
King-Díaz B.:
Departamento de Bioquímica, Facultad de Química, Universidad Nacional Autónoma de México (UNAM), Ciudad Universitaria, Mexico, DF -04510, Mexico
Lotina-Hennsen B.:
Departamento de Bioquímica, Facultad de Química, Universidad Nacional Autónoma de México (UNAM), Ciudad Universitaria, Mexico, DF -04510, Mexico
Terezan A.P.:
Instituto de Química, Universidade Federal de Goiás (UFG), Goiânia, GO, 74690-900, Brazil
Moura Veiga T.A.:
Departamento de Química, Universidade Federal de São Paulo (UNIFESP), Diadema, SP 09972-270, Brazil
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