Active response of soybean to defoliator Anticarsia gemmatalis Hübner: strategies to overcome protease inhibitor production

Endogenous mechanisms of plant resistance to herbivorous insects could be adapted to enable the development of alternative strategies for pest control. Activation of the lipoxygenase (LOX) pathway by jasmonic acid, the hormone responsible for activating genes encoding protease inhibitors (PI), is on...

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Autores principales:	Paixão,Gilson Petrônio, Lourenção,André Luiz, Rocha Silva,Camila, Cordeiro,Gláucia, de Almeida Barros,Rafael, Oliveira,Joel Antônio, Visôtto,Liliane Evangelista, Goreti Almeida Oliveira,Maria
Lenguaje:	English
Publicado:	Universidad de Tarapacá. Facultad de Ciencias Agronómicas 2016
Materias:	plant defense lipoxygenases velvet caterpillar
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-34292016000200010
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spelling	oai:scielo:S0718-342920160002000102016-08-01Active response of soybean to defoliator Anticarsia gemmatalis Hübner: strategies to overcome protease inhibitor productionPaixão,Gilson PetrônioLourenção,André LuizRocha Silva,CamilaCordeiro,Gláuciade Almeida Barros,RafaelOliveira,Joel AntônioVisôtto,Liliane EvangelistaGoreti Almeida Oliveira,Maria plant defense lipoxygenases velvet caterpillar Endogenous mechanisms of plant resistance to herbivorous insects could be adapted to enable the development of alternative strategies for pest control. Activation of the lipoxygenase (LOX) pathway by jasmonic acid, the hormone responsible for activating genes encoding protease inhibitors (PI), is one of the main direct defenses of plants against insects. In this study, soybean cultivars at the V3 stage that were either susceptible or resistant to herbivorous insects were used to investigate changes in the activity of LOX and concentration of PIs in response to 24- or 48-h feeding by fourth and fifth instar Anticarsia gemmatalis (Lepidoptera: Noctuidae) larvae. LOX activity (0.0-0.007 nm s-1/mg) and the PI concentration (60 to 125 mg of trypsin inhibitor / mg of protein and 90 to 120 mg of trypsin inhibitor / mg protein after 24 and 48 h after attack, respectively) both increased in response to damage caused by A. gemmatalis. Proteolytic activity decreased by approximately 50% in cultivars with different degrees of resistance. Raised enzyme profiles in the midgut of A. gemmatalis may be related to tryptic enzymes that increased, compensating for the inhibition of proteases by entomotoxic substances of the soybean cultivars.info:eu-repo/semantics/openAccessUniversidad de Tarapacá. Facultad de Ciencias AgronómicasIdesia (Arica) v.34 n.2 20162016-04-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-34292016000200010en10.4067/S0718-34292016005000010
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	plant defense lipoxygenases velvet caterpillar
spellingShingle	plant defense lipoxygenases velvet caterpillar Paixão,Gilson Petrônio Lourenção,André Luiz Rocha Silva,Camila Cordeiro,Gláucia de Almeida Barros,Rafael Oliveira,Joel Antônio Visôtto,Liliane Evangelista Goreti Almeida Oliveira,Maria Active response of soybean to defoliator Anticarsia gemmatalis Hübner: strategies to overcome protease inhibitor production
description	Endogenous mechanisms of plant resistance to herbivorous insects could be adapted to enable the development of alternative strategies for pest control. Activation of the lipoxygenase (LOX) pathway by jasmonic acid, the hormone responsible for activating genes encoding protease inhibitors (PI), is one of the main direct defenses of plants against insects. In this study, soybean cultivars at the V3 stage that were either susceptible or resistant to herbivorous insects were used to investigate changes in the activity of LOX and concentration of PIs in response to 24- or 48-h feeding by fourth and fifth instar Anticarsia gemmatalis (Lepidoptera: Noctuidae) larvae. LOX activity (0.0-0.007 nm s-1/mg) and the PI concentration (60 to 125 mg of trypsin inhibitor / mg of protein and 90 to 120 mg of trypsin inhibitor / mg protein after 24 and 48 h after attack, respectively) both increased in response to damage caused by A. gemmatalis. Proteolytic activity decreased by approximately 50% in cultivars with different degrees of resistance. Raised enzyme profiles in the midgut of A. gemmatalis may be related to tryptic enzymes that increased, compensating for the inhibition of proteases by entomotoxic substances of the soybean cultivars.
author	Paixão,Gilson Petrônio Lourenção,André Luiz Rocha Silva,Camila Cordeiro,Gláucia de Almeida Barros,Rafael Oliveira,Joel Antônio Visôtto,Liliane Evangelista Goreti Almeida Oliveira,Maria
author_facet	Paixão,Gilson Petrônio Lourenção,André Luiz Rocha Silva,Camila Cordeiro,Gláucia de Almeida Barros,Rafael Oliveira,Joel Antônio Visôtto,Liliane Evangelista Goreti Almeida Oliveira,Maria
author_sort	Paixão,Gilson Petrônio
title	Active response of soybean to defoliator Anticarsia gemmatalis Hübner: strategies to overcome protease inhibitor production
title_short	Active response of soybean to defoliator Anticarsia gemmatalis Hübner: strategies to overcome protease inhibitor production
title_full	Active response of soybean to defoliator Anticarsia gemmatalis Hübner: strategies to overcome protease inhibitor production
title_fullStr	Active response of soybean to defoliator Anticarsia gemmatalis Hübner: strategies to overcome protease inhibitor production
title_full_unstemmed	Active response of soybean to defoliator Anticarsia gemmatalis Hübner: strategies to overcome protease inhibitor production
title_sort	active response of soybean to defoliator anticarsia gemmatalis hübner: strategies to overcome protease inhibitor production
publisher	Universidad de Tarapacá. Facultad de Ciencias Agronómicas
publishDate	2016
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-34292016000200010
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Active response of soybean to defoliator Anticarsia gemmatalis Hübner: strategies to overcome protease inhibitor production

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