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Molecules 2013, 18(1), 778-788; doi:10.3390/molecules18010778

Tricolorin A as a Natural Herbicide

1
Departamento de Bioquímica, Facultad de Química, Universidad Nacional Autónoma de México, México D.F., C.P. 04510, Mexico
2
Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, México D.F., C.P. 04510, Mexico
*
Author to whom correspondence should be addressed.
Received: 15 November 2012 / Revised: 3 January 2013 / Accepted: 5 January 2013 / Published: 9 January 2013
(This article belongs to the Section Natural Products)
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Abstract

Tricolorin A acts as pre- and post-emergence plant growth inhibitor. In pre-emergence it displays broad-spectrum weed control, inhibiting germination of both monocotyledonous (Lolium mutliflorum and Triticum vulgare) and dicotyledonous (Physalis ixocarpa and Trifolium alexandrinum) seeds, being the dicotyledonous seeds the most inhibited. Tricolorin A also inhibited seedling growth, and seed respiration, and since the concentrations required for inhibiting both germination and respiration were similar, we suggest that respiration is one of its targets. Tricolorin A at 60 µM acts as a post- emergence plant growth inhibitor by reducing dry plant biomass by 62%, 37%, 33%, and 22% for L. multiflorum, T. alexandrinum, T. vulgare, and P. ixocarpa, respectively, 18 days after its application. In order to determine the potency of tricolorin A as a plant growth inhibitor, paraquat was used as control; the results indicate that tricolorin A acts as a non-selective post-emergence plant growth inhibitor similar to paraquat, since both reduced the biomass production in P. ixocarpa and T. alexandrinum. Therefore, we suggest that tricolorin A will be a good biodegradable herbicide for weeds.
Keywords: germination; Lolium mutliflorum; Physalis ixocarpa; pre-emergence herbicide; post-emergence-herbicide; photosynthesis; seed respiration; Trifolium alexandrinum; Triticum vulgare germination; Lolium mutliflorum; Physalis ixocarpa; pre-emergence herbicide; post-emergence-herbicide; photosynthesis; seed respiration; Trifolium alexandrinum; Triticum vulgare
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Lotina-Hennsen, B.; King-Díaz, B.; Pereda-Miranda, R. Tricolorin A as a Natural Herbicide. Molecules 2013, 18, 778-788.

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