Glyphosate Plus Carboxylic Compounds Boost Activity of Free Radical-Scavenging Enzymes in Sugarcane

Bruno Rafael de Almeida Moreira, Ronaldo da Silva Viana, Paulo Alexandre Monteiro de Figueiredo, Lucas Aparecido Manzani Lisboa, Celso Tadao Miasaki, Anderson Chagas Magahães, Sérgio Bispo Ramos, Charlene Raquel de Almeida Viana, Vanessa Dias Rezende Trindade and André May
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Bruno Rafael de Almeida Moreira: School of Engineering, São Paulo State University (Unesp), Ilha Solteira, São Paulo 17900-000, Brazil
Ronaldo da Silva Viana: College of Agricultural and Technological Sciences, São Paulo State University (Unesp), Dracena, São Paulo 15385-000, Brazil
Paulo Alexandre Monteiro de Figueiredo: College of Agricultural and Technological Sciences, São Paulo State University (Unesp), Dracena, São Paulo 15385-000, Brazil
Lucas Aparecido Manzani Lisboa: College of Agricultural and Technological Sciences, São Paulo State University (Unesp), Dracena, São Paulo 15385-000, Brazil
Celso Tadao Miasaki: College of Agricultural and Technological Sciences, São Paulo State University (Unesp), Dracena, São Paulo 15385-000, Brazil
Anderson Chagas Magahães: College of Agricultural and Technological Sciences, São Paulo State University (Unesp), Dracena, São Paulo 15385-000, Brazil
Sérgio Bispo Ramos: College of Agricultural and Technological Sciences, São Paulo State University (Unesp), Dracena, São Paulo 15385-000, Brazil
Charlene Raquel de Almeida Viana: School of Engineering, São Paulo State University (Unesp), Ilha Solteira, São Paulo 17900-000, Brazil
Vanessa Dias Rezende Trindade: School of Engineering, São Paulo State University (Unesp), Ilha Solteira, São Paulo 17900-000, Brazil
André May: Brazilian Agricultural Research Corporation (Embrapa), Jaguariúna, São Paulo 13820-000, Brazil

Agriculture, 2020, vol. 10, issue 4, 1-12

Abstract: Drought, heat, and salinity, as well as pests, are stressing agents, which have impressively declined the productivity and quality of sugarcane crop in harsh environments. Our study aimed to examine the effect of various chemical ripeners as alternatives to enhancing the reactiveness of the enzymatic antioxidant system of sugarcane crop. The field experiment consisted of spraying the ingredients, ethephon, ethyl-trinexapac, glyphosate, carboxylic compounds (MTD) and methyl-sulfumeturon on the Brazilian commercial varieties, SP80-1842 and SP80-3280, before flowering stage. The enzymatic assay comprised the monitoring of the rate of degradation of free radical by ascorbate peroxidase (APX), catalase (CAT), peroxidase (POD) and superoxide dismutase (SOD) in the extract from leaves of 11-month-old plants. Spraying glyphosate at 0.15 L ha −1 with MTD at 1.00 L ha −1 provided the highest activity of CAT, 0.65 µmol H 2 O 2 min −1 mg −1 protein, in variety SP80-1842 Spraying glyphosate at 0.15 L ha −1 with ethephon at 0.33 L ha −1 caused the highest activity of APX, 1.70 nmol ascorbate min −1 mg −1 protein, in variety SP80-3280. The conclusion is, therefore, that mixtures of glyphosate with the insecticide/acaricide, MTD, and with the synthetic ethylene-releasing product, ethephon could help sugarcane crop grow adequately under uncontrollable or unpredictable agroecosystems like marginal lands.

Keywords: induced oxidative stress; plant growth regulators; Saccharum sp. (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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