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J Agric Food Chem

Title:		Effect of Methyl Jasmonate on the Biosynthesis of Volatile Compounds Associated with the Ripening of Grape Tomato Fruits
Author(s):		Rodrigues Magalhaes HC; Alves Filho EG; Rivero Meza SL; Oliveira A; Garruti DS; Purgatto E;
Address:		"Embrapa Agroindustria Tropical, Sara Mesquita, 2270, Pici, Fortaleza, Ceara 60511-110, Brazil. Department of Food and Experimental Nutrition, NAPAN/FoRC - Food Research Center, University of Sao Paulo, School of Pharmaceutical Sciences, Av. Prof. Lineu Prestes 580, Butanta, Sao Paulo, Sao Paulo CEP 05508-000, Brazil. Department of Food Engineering, Universidade Federal do Ceara, Fortaleza, Ceara 60440-900, Brazil"
Journal Title:		J Agric Food Chem
Year:		2023
Volume:		20230307
Issue:		11
Page Number:		4696 - 4705
DOI:		10.1021/acs.jafc.2c06215
ISSN/ISBN:		1520-5118 (Electronic) 0021-8561 (Linking)
Abstract:		"The present work aims to evaluate the roles of methyl jasmonate (MeJA) in the formation of volatile organic compounds (VOC) from grape tomatoes during ripening. Fruits were treated with MeJA, ethylene, 1-MCP (1-methylcyclopropene), and MeJA+1-MCP, with analyses of the VOC and levels of the gene transcripts for the enzymes lipoxygenase (LOX), alcohol dehydrogenase (ADH), and hydroperoxide lyase (HPL). An intimate relationship between MeJA and ethylene in aroma formation was detected, mainly among the VOC from the carotenoid pathway. Expression of the fatty acid transcripts, LOXC, ADH, and HPL pathway genes, was reduced by 1-MCP, even when associated with MeJA. In ripe tomato, MeJA increased most of the volatile C6 compounds, except 1-hexanol. The MeJA+1-MCP treatment followed most of the increases in volatile C6 compounds that were increased by MeJA alone, which evidenced some ethylene-independent mechanism in the production of the volatile C6 compounds. In ripe tomato, MeJA and MeJA+1-MCP increased the levels of 6-methyl-5-hepten-2-one, which is derived from lycopene, evidencing an ethylene-independent biosynthetic process"
Keywords:		Fruit/metabolism *Solanum lycopersicum/genetics *Vitis/metabolism *Volatile Organic Compounds/metabolism Ethylenes/metabolism Oxylipins/pharmacology/metabolism Cyclopentanes/pharmacology/metabolism Acetates/pharmacology/metabolism Gene Expression Regulati;
Notes:		"MedlineRodrigues Magalhaes, Hilton Cesar Alves Filho, Elenilson Godoy Rivero Meza, Silvia Leticia Oliveira, Aline Garruti, Deborah S Purgatto, Eduardo eng 2023/03/08 J Agric Food Chem. 2023 Mar 22; 71(11):4696-4705. doi: 10.1021/acs.jafc.2c06215. Epub 2023 Mar 7"