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J Agric Food Chem

Title:		Proton-Coupled Electron Transfers of Defense Phytochemicals in Sorghum (Sorghum bicolor (L.) Moench)
Author(s):		Uchimiya M;
Address:		"USDA-ARS Southern Regional Research Center, 1100 Robert E. Lee Boulevard, New Orleans, Louisiana 70124, United States"
Journal Title:		J Agric Food Chem
Year:		2020
Volume:		20200221
Issue:		46
Page Number:		12978 - 12983
DOI:		10.1021/acs.jafc.9b07816
ISSN/ISBN:		1520-5118 (Electronic) 0021-8561 (Linking)
Abstract:		"Sorghum (Sorghum bicolor (L.) Moench) produces a range of defense phytochemicals containing a quinone core structure: sorgoleone allelochemical, flavonoid phytoalexins, and a broad spectrum of polyphenols. Those phytochemicals react with the components of cellular and agroecosystems to form stable semiquinone radicals engaging in different proton-coupled electron transfer reactions. This unique redox reactivity of plant phenolics could be used to develop bioactive food ingredients and green pesticides. To achieve those application goals, chemical phenotyping methods sensitive to quinone-semiquinone-dihydroxybenzene redox cycles (e.g., electrochemical conversion with fluorescence detection) are in demand. Chemometrics-based fingerprinting tools could facilitate on-farm screening of target traits for breeding innovations"
Keywords:		Benzoquinones/chemistry/metabolism Electron Transport Pheromones/chemistry/metabolism Phytochemicals/chemistry/*metabolism Polyphenols/chemistry/metabolism Protons Sorghum/chemistry/*metabolism allelopathy omics quinoid redox catalyst sensor;
Notes:		"MedlineUchimiya, Minori eng Review 2020/02/12 J Agric Food Chem. 2020 Nov 18; 68(46):12978-12983. doi: 10.1021/acs.jafc.9b07816. Epub 2020 Feb 21"