Plant volatiles guide the new pest Dichelops furcatus to feed on corn seedlings

Plant volatiles guide the new pest Dichelops furcatus to feed on corn seedlings

BACKGROUND: Recently, in temperate and neotropical regions of South America the generalist stink bug Dichelops furcatus (Hemiptera: Pentatomidae) became a new pest of corn (Zea mays) seedlings. Implementation of no-tillage cultivation system left organic matter covering the soil, which shelters adults of stink bugs during winter. In spring, corn is sowed under soybean stubble and D. furcatus adults start to feed on seedlings. To determine corn-derived volatile organic compounds (VOCs) that attract this stink bug species, we evaluated stink bug preferences from two corn hybrids with contrast germplasm backgrounds, a temperate and a tropical hybrid. RESULTS: Stink bugs preferred to feed on temperate seedlings rather than on the tropical ones. GC–MS and PCA analysis of VOCs suggested that hybrids emitted contrasting blends. Linalool represented 68% of total VOCs emitted from temperate corn, while in the tropical hybrid this compound represented 48%. Olfactometer experiments demonstrated that linalool was attractive to stink bugs. However, 2 h of D. furcatus attack induced emission of 14 additional VOCs in temperate seedlings, and olfactometer bioassay and blend of VOCs emission suggested that perceived volatiles by stink bugs induced feeding avoidance. The increment of VOCs emission was associated with the induction of JA, JA-Ile, ABA, and IAA, and decreasing of SA concentrations. CONCLUSION: This is the first time showing a complete profile of defensive phytohormones induced by stink bugs feeding on corn, and further demonstrating that a blend of corn seedling-associated VOCs, mainly composed by linalool, modulates D. furcatus adults' behavior and feeding preferences.

Saved in:
Bibliographic Details
Main Authors: Jacobi, Vanesa Gisela, Fernández, Patricia Carina, Barriga, Lucía Guadalupe, Almeida Trapp, Marilia, Mithöfer, Axel, Zavala, Jorge Alberto
Format: Texto biblioteca
Language:eng
Subjects:STINK BUGS, DICHELOP FURCATUS, CORN SEEDLINGS, ORGANIC VOLATILE COMPOUNDS, PHYTOHORMONE REGULATION, LINALOOL, ,
Online Access:http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=54617
http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=
http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=
http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=
http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=
Tags: Add Tag
No Tags, Be the first to tag this record!
id KOHA-OAI-AGRO:54617
record_format koha
institution UBA FA
collection Koha
country Argentina
countrycode AR
component Bibliográfico
access En linea
En linea
databasecode cat-ceiba
tag biblioteca
region America del Sur
libraryname Biblioteca Central FAUBA
language eng
topic STINK BUGS
DICHELOP FURCATUS
CORN SEEDLINGS
ORGANIC VOLATILE COMPOUNDS
PHYTOHORMONE REGULATION
LINALOOL

STINK BUGS
DICHELOP FURCATUS
CORN SEEDLINGS
ORGANIC VOLATILE COMPOUNDS
PHYTOHORMONE REGULATION
LINALOOL
spellingShingle STINK BUGS
DICHELOP FURCATUS
CORN SEEDLINGS
ORGANIC VOLATILE COMPOUNDS
PHYTOHORMONE REGULATION
LINALOOL

STINK BUGS
DICHELOP FURCATUS
CORN SEEDLINGS
ORGANIC VOLATILE COMPOUNDS
PHYTOHORMONE REGULATION
LINALOOL
Jacobi, Vanesa Gisela
Fernández, Patricia Carina
Barriga, Lucía Guadalupe
Almeida Trapp, Marilia
Mithöfer, Axel
Zavala, Jorge Alberto
Plant volatiles guide the new pest Dichelops furcatus to feed on corn seedlings
description BACKGROUND: Recently, in temperate and neotropical regions of South America the generalist stink bug Dichelops furcatus (Hemiptera: Pentatomidae) became a new pest of corn (Zea mays) seedlings. Implementation of no-tillage cultivation system left organic matter covering the soil, which shelters adults of stink bugs during winter. In spring, corn is sowed under soybean stubble and D. furcatus adults start to feed on seedlings. To determine corn-derived volatile organic compounds (VOCs) that attract this stink bug species, we evaluated stink bug preferences from two corn hybrids with contrast germplasm backgrounds, a temperate and a tropical hybrid. RESULTS: Stink bugs preferred to feed on temperate seedlings rather than on the tropical ones. GC–MS and PCA analysis of VOCs suggested that hybrids emitted contrasting blends. Linalool represented 68% of total VOCs emitted from temperate corn, while in the tropical hybrid this compound represented 48%. Olfactometer experiments demonstrated that linalool was attractive to stink bugs. However, 2 h of D. furcatus attack induced emission of 14 additional VOCs in temperate seedlings, and olfactometer bioassay and blend of VOCs emission suggested that perceived volatiles by stink bugs induced feeding avoidance. The increment of VOCs emission was associated with the induction of JA, JA-Ile, ABA, and IAA, and decreasing of SA concentrations. CONCLUSION: This is the first time showing a complete profile of defensive phytohormones induced by stink bugs feeding on corn, and further demonstrating that a blend of corn seedling-associated VOCs, mainly composed by linalool, modulates D. furcatus adults' behavior and feeding preferences.
format Texto
topic_facet
STINK BUGS
DICHELOP FURCATUS
CORN SEEDLINGS
ORGANIC VOLATILE COMPOUNDS
PHYTOHORMONE REGULATION
LINALOOL
author Jacobi, Vanesa Gisela
Fernández, Patricia Carina
Barriga, Lucía Guadalupe
Almeida Trapp, Marilia
Mithöfer, Axel
Zavala, Jorge Alberto
author_facet Jacobi, Vanesa Gisela
Fernández, Patricia Carina
Barriga, Lucía Guadalupe
Almeida Trapp, Marilia
Mithöfer, Axel
Zavala, Jorge Alberto
author_sort Jacobi, Vanesa Gisela
title Plant volatiles guide the new pest Dichelops furcatus to feed on corn seedlings
title_short Plant volatiles guide the new pest Dichelops furcatus to feed on corn seedlings
title_full Plant volatiles guide the new pest Dichelops furcatus to feed on corn seedlings
title_fullStr Plant volatiles guide the new pest Dichelops furcatus to feed on corn seedlings
title_full_unstemmed Plant volatiles guide the new pest Dichelops furcatus to feed on corn seedlings
title_sort plant volatiles guide the new pest dichelops furcatus to feed on corn seedlings
url http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=54617
http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=
http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=
http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=
http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=
work_keys_str_mv AT jacobivanesagisela plantvolatilesguidethenewpestdichelopsfurcatustofeedoncornseedlings
AT fernandezpatriciacarina plantvolatilesguidethenewpestdichelopsfurcatustofeedoncornseedlings
AT barrigaluciaguadalupe plantvolatilesguidethenewpestdichelopsfurcatustofeedoncornseedlings
AT almeidatrappmarilia plantvolatilesguidethenewpestdichelopsfurcatustofeedoncornseedlings
AT mithoferaxel plantvolatilesguidethenewpestdichelopsfurcatustofeedoncornseedlings
AT zavalajorgealberto plantvolatilesguidethenewpestdichelopsfurcatustofeedoncornseedlings
_version_ 1802815347066142720
spelling KOHA-OAI-AGRO:546172024-03-20T14:22:43Zhttp://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=54617http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=AAGPlant volatiles guide the new pest Dichelops furcatus to feed on corn seedlingsJacobi, Vanesa GiselaFernández, Patricia CarinaBarriga, Lucía GuadalupeAlmeida Trapp, MariliaMithöfer, AxelZavala, Jorge Albertotextengapplication/pdfBACKGROUND: Recently, in temperate and neotropical regions of South America the generalist stink bug Dichelops furcatus (Hemiptera: Pentatomidae) became a new pest of corn (Zea mays) seedlings. Implementation of no-tillage cultivation system left organic matter covering the soil, which shelters adults of stink bugs during winter. In spring, corn is sowed under soybean stubble and D. furcatus adults start to feed on seedlings. To determine corn-derived volatile organic compounds (VOCs) that attract this stink bug species, we evaluated stink bug preferences from two corn hybrids with contrast germplasm backgrounds, a temperate and a tropical hybrid. RESULTS: Stink bugs preferred to feed on temperate seedlings rather than on the tropical ones. GC–MS and PCA analysis of VOCs suggested that hybrids emitted contrasting blends. Linalool represented 68% of total VOCs emitted from temperate corn, while in the tropical hybrid this compound represented 48%. Olfactometer experiments demonstrated that linalool was attractive to stink bugs. However, 2 h of D. furcatus attack induced emission of 14 additional VOCs in temperate seedlings, and olfactometer bioassay and blend of VOCs emission suggested that perceived volatiles by stink bugs induced feeding avoidance. The increment of VOCs emission was associated with the induction of JA, JA-Ile, ABA, and IAA, and decreasing of SA concentrations. CONCLUSION: This is the first time showing a complete profile of defensive phytohormones induced by stink bugs feeding on corn, and further demonstrating that a blend of corn seedling-associated VOCs, mainly composed by linalool, modulates D. furcatus adults' behavior and feeding preferences.BACKGROUND: Recently, in temperate and neotropical regions of South America the generalist stink bug Dichelops furcatus (Hemiptera: Pentatomidae) became a new pest of corn (Zea mays) seedlings. Implementation of no-tillage cultivation system left organic matter covering the soil, which shelters adults of stink bugs during winter. In spring, corn is sowed under soybean stubble and D. furcatus adults start to feed on seedlings. To determine corn-derived volatile organic compounds (VOCs) that attract this stink bug species, we evaluated stink bug preferences from two corn hybrids with contrast germplasm backgrounds, a temperate and a tropical hybrid. RESULTS: Stink bugs preferred to feed on temperate seedlings rather than on the tropical ones. GC–MS and PCA analysis of VOCs suggested that hybrids emitted contrasting blends. Linalool represented 68% of total VOCs emitted from temperate corn, while in the tropical hybrid this compound represented 48%. Olfactometer experiments demonstrated that linalool was attractive to stink bugs. However, 2 h of D. furcatus attack induced emission of 14 additional VOCs in temperate seedlings, and olfactometer bioassay and blend of VOCs emission suggested that perceived volatiles by stink bugs induced feeding avoidance. The increment of VOCs emission was associated with the induction of JA, JA-Ile, ABA, and IAA, and decreasing of SA concentrations. CONCLUSION: This is the first time showing a complete profile of defensive phytohormones induced by stink bugs feeding on corn, and further demonstrating that a blend of corn seedling-associated VOCs, mainly composed by linalool, modulates D. furcatus adults' behavior and feeding preferences.STINK BUGSDICHELOP FURCATUSCORN SEEDLINGSORGANIC VOLATILE COMPOUNDSPHYTOHORMONE REGULATIONLINALOOLPest Management Science

Similar Items