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Research Project: New Weed Management Tools from Natural Product-Based Discoveries

Location: Natural Products Utilization Research

Title: Influence of amino acids on the phytotoxicity of 2-benzoxazolinone on Lemna paucicostata

Author
item Sanchez-moreiras, Adela - University Of Vigo
item Pedrol, Nuria - University Of Vigo
item Duke, Stephen

Submitted to: Journal of Allelochemical Interactions
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 12/30/2017
Publication Date: 1/5/2018
Citation: Sanchez-Moreiras, A.M., Pedrol, N., Duke, S.O. 2018. Influence of amino acids on the phytotoxicity of 2-benzoxazolinone on Lemna paucicostata. Journal of Allelochemical Interactions. 4(1):33-39.

Interpretive Summary: Benzoxazinone compounds are produced by several grain crops and are thought to provide them with some protection from weeds, due to the toxic effect of these compounds on weeds. Little is known about why these compounds are toxic to weeds. This paper provides evidence that three essential amino acids are involved in the mode of action of the most common benzoxazinone compound, 2-benzoxazolinone (BOA).

Technical Abstract: 2-Benzoxazolinone (BOA) is a phytotoxic compound that induces strong effects on plant metabolism. BOA effects include increased membrane permeability, degradation of proteins and pigments, increased lipid peroxidation, oxidative stress and senescence induction. In this work, the effects of amino acid supplementation on BOA action were analyzed. Roles of histidine, tryptophan and cysteine in the mode of action of BOA action are proposed from their protective effects.