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PeerJ

Title:		Role of reactive oxygen species and isoflavonoids in soybean resistance to the attack of the southern green stink bug
Author(s):		Sabljic I; Barneto JA; Balestrasse KB; Zavala JA; Pagano EA;
Address:		"Instituto de Investigaciones en Biociencias Agricolas y Ambientales-INBA, Facultad de Agronomia, Universidad de Buenos Aires, Consejo Nacional de Investigaciones Cientificas y Tecnicas, Ciudad Autonoma de Buenos Aires, Argentina. GDM, Chacabuco, Buenos Aires, Argentina"
Journal Title:		PeerJ
Year:		2020
Volume:		20200917
Issue:
Page Number:		e9956 -
DOI:		10.7717/peerj.9956
ISSN/ISBN:		2167-8359 (Print) 2167-8359 (Electronic) 2167-8359 (Linking)
Abstract:		"Southern green stink bugs (Nezara viridula L.) are one of the major pests in many soybean producing areas. They cause a decrease in yield and affect seed quality by reducing viability and vigor. Alterations have been reported in the oxidative response and in the secondary metabolites in different plant species due to insect damage. However, there is little information available on soybean-stink bug interactions. In this study we compare the response of undamaged and damaged seeds by Nezara viridula in two soybean cultivars, IAC-100 (resistant) and Davis (susceptible), grown under greenhouse conditions. Pod hardness, H(2)O(2) generation, enzyme activities in guaiacol peroxidase (GPOX), catalase (CAT) and superoxide dismutase (SOD) as well as lipoxygenase expression and isoflavonoid production were quantified. Our results showed a greater resistance of IAC-100 to pod penetration, a decrease in peroxide content after stink bug attack, and higher GPOX, CAT and SOD activities in seeds due to the genotype and to the genotype-interaction with the herbivory treatment. Induction of LOX expression in both cultivars and higher production of isoflavonoids in IAC-100 were also detected. It was then concluded that the herbivory stink bug induces pathways related to oxidative stress and to the secondary metabolites in developing seeds of soybean and that differences between cultivars hold promise for a plant breeding program"
Keywords:		Glycine max Herbivory Lipoxygenase Nezara viridula Oxidative stress Plant-insect interaction;
Notes:		"PubMed-not-MEDLINESabljic, Ivana Barneto, Jesica A Balestrasse, Karina B Zavala, Jorge A Pagano, Eduardo A eng 2020/10/01 PeerJ. 2020 Sep 17; 8:e9956. doi: 10.7717/peerj.9956. eCollection 2020"