Tomato genotype resistance to whitefly mediated by allelochemicals and Mi gene

ABSTRACT Allelochemicals and Mi, nematode‑resistant gene, are found in wild tomato species and can provide resistance to insect pests. The aim of this study was to check the resistance of tomato (Solanum lycopersicum L.) genotypes with different foliar allelochemical contents (acylsugar an...

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Autores principales:	Neiva,Irã Pinheiro, Silva,Alex Antônio da, Resende,Jéssica Figueiredo, Carvalho,Regis de Castro, Oliveira,Alisson Marcel Souza de, Maluf,Wilson Roberto
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2019
Materias:	Bemisia tabaci plant breeding secondary substances Solanum lycopersicum
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392019000100124
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spelling	oai:scielo:S0718-583920190001001242019-02-19Tomato genotype resistance to whitefly mediated by allelochemicals and Mi geneNeiva,Irã PinheiroSilva,Alex Antônio daResende,Jéssica FigueiredoCarvalho,Regis de CastroOliveira,Alisson Marcel Souza deMaluf,Wilson Roberto Bemisia tabaci plant breeding secondary substances Solanum lycopersicum ABSTRACT Allelochemicals and Mi, nematode‑resistant gene, are found in wild tomato species and can provide resistance to insect pests. The aim of this study was to check the resistance of tomato (Solanum lycopersicum L.) genotypes with different foliar allelochemical contents (acylsugar and/or zingiberene) associated with and not associated with the Mi gene against the whitefly (Bemisia tabaci biotype B). Fifteen tomato genotypes were tested for resistance against whitefly (Santa Clara, TOM‑695, TOM‑556, TOM‑584, TOM‑684, TOM‑687, TOM‑688, TOM‑759, TOM‑760, ZGB‑703, ZGB‑704, TOM‑778, TOM‑779, TOM‑780, and PI‑127826). Genotypes with high acylsugar (AS) (TOM‑687 and TOM‑688) as well as those with high zingiberene (ZGB) contents (ZGB‑703 and ZGB‑704) had lower oviposition and a lower number of nymphs when compared with genotypes with low AS and ZGB contents and without the Mi gene (Santa Clara, TOM‑ 695, TOM‑556, and TOM‑584). The genotypes carrying the Mi gene, associated with low allelochemical contents, were less preferred for whitefly oviposition compared with susceptible genotypes with low AS and ZGB contents and without the Mi gene. When both the AS and ZGB allelochemicals were present in the same genotypes (TOM‑778, TOM‑779, and TOM-780), they showed a synergistic effect; the number of whitefly eggs and nymphs decreased in genotypes with high AS and ZGB compared with genotypes that had only one of these allelochemicals. However, the number of whitefly eggs and nymphs of genotypes with high AS and ZGB contents, individually or combined, was less than for genotypes carrying the Mi gene. These results indicate that allelochemicals are more effective than the Mi gene to provide resistance to whitefly.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.79 n.1 20192019-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392019000100124en10.4067/S0718-58392019000100124
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Bemisia tabaci plant breeding secondary substances Solanum lycopersicum
spellingShingle	Bemisia tabaci plant breeding secondary substances Solanum lycopersicum Neiva,Irã Pinheiro Silva,Alex Antônio da Resende,Jéssica Figueiredo Carvalho,Regis de Castro Oliveira,Alisson Marcel Souza de Maluf,Wilson Roberto Tomato genotype resistance to whitefly mediated by allelochemicals and Mi gene
description	ABSTRACT Allelochemicals and Mi, nematode‑resistant gene, are found in wild tomato species and can provide resistance to insect pests. The aim of this study was to check the resistance of tomato (Solanum lycopersicum L.) genotypes with different foliar allelochemical contents (acylsugar and/or zingiberene) associated with and not associated with the Mi gene against the whitefly (Bemisia tabaci biotype B). Fifteen tomato genotypes were tested for resistance against whitefly (Santa Clara, TOM‑695, TOM‑556, TOM‑584, TOM‑684, TOM‑687, TOM‑688, TOM‑759, TOM‑760, ZGB‑703, ZGB‑704, TOM‑778, TOM‑779, TOM‑780, and PI‑127826). Genotypes with high acylsugar (AS) (TOM‑687 and TOM‑688) as well as those with high zingiberene (ZGB) contents (ZGB‑703 and ZGB‑704) had lower oviposition and a lower number of nymphs when compared with genotypes with low AS and ZGB contents and without the Mi gene (Santa Clara, TOM‑ 695, TOM‑556, and TOM‑584). The genotypes carrying the Mi gene, associated with low allelochemical contents, were less preferred for whitefly oviposition compared with susceptible genotypes with low AS and ZGB contents and without the Mi gene. When both the AS and ZGB allelochemicals were present in the same genotypes (TOM‑778, TOM‑779, and TOM-780), they showed a synergistic effect; the number of whitefly eggs and nymphs decreased in genotypes with high AS and ZGB compared with genotypes that had only one of these allelochemicals. However, the number of whitefly eggs and nymphs of genotypes with high AS and ZGB contents, individually or combined, was less than for genotypes carrying the Mi gene. These results indicate that allelochemicals are more effective than the Mi gene to provide resistance to whitefly.
author	Neiva,Irã Pinheiro Silva,Alex Antônio da Resende,Jéssica Figueiredo Carvalho,Regis de Castro Oliveira,Alisson Marcel Souza de Maluf,Wilson Roberto
author_facet	Neiva,Irã Pinheiro Silva,Alex Antônio da Resende,Jéssica Figueiredo Carvalho,Regis de Castro Oliveira,Alisson Marcel Souza de Maluf,Wilson Roberto
author_sort	Neiva,Irã Pinheiro
title	Tomato genotype resistance to whitefly mediated by allelochemicals and Mi gene
title_short	Tomato genotype resistance to whitefly mediated by allelochemicals and Mi gene
title_full	Tomato genotype resistance to whitefly mediated by allelochemicals and Mi gene
title_fullStr	Tomato genotype resistance to whitefly mediated by allelochemicals and Mi gene
title_full_unstemmed	Tomato genotype resistance to whitefly mediated by allelochemicals and Mi gene
title_sort	tomato genotype resistance to whitefly mediated by allelochemicals and mi gene
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392019000100124
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_version_	1714205385916678144

Tomato genotype resistance to whitefly mediated by allelochemicals and Mi gene

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