Supplanting resistance of the Mi gene by root-knot nematode in industrial tomato in the Cerrado in Goiás State of Brazil
Problems with root-knot nematodes, caused by genus Meloidogyne, can be controlled through the introduction of resistance genes in commercial varieties of tomatoes. However, plants of the hybrid ‘Heinz 9992’ for industrial processing, carrying the Mi gene, were reported with their roots severely infe...
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| description | Problems with root-knot nematodes, caused by genus Meloidogyne, can be controlled through the introduction of resistance genes in commercial varieties of tomatoes. However, plants of the hybrid ‘Heinz 9992’ for industrial processing, carrying the Mi gene, were reported with their roots severely infected in experimental cultivation in Goiás State of Brazil with symptoms typical of galls caused by Meloidogyne spp. After dissecting the galls present in the root samples, the females of the nematodes were removed and afterwards, performed the analysis of the perineal pattern and the biochemical characterization by electrophoresis of isoenzymes, besides the pathogenicity test. The pathogen analyzed was identified as Meloidogyne incognita. The pathogenicity test confirmed the supplanting resistance of the tomato hybrid with the Mi gene by this virulent population of M. incognita.
RESUMO: Problemas causados pelos nematoides-das-galhas, pertencentes ao gênero Meloidogyne podem ser controlados com a introdução de genes de resistência em cultivares comerciais de tomateiro. No entanto, plantas do híbrido ‘Heinz 9992’ adequadas ao processamento industrial, portadoras do gene Mi, foram encontradas com suas raízes severamente infectadas, em um cultivo experimental no município de Morrinhos (GO) com sintomas típicos de galhas causadas por Meloidogyne spp. Após dissecar as galhas presentes nas amostras de raízes, as fêmeas do nematoide foram retiradas para a análise do padrão perineal e a caracterização bioquímica por eletroforese de isoenzimas, além do teste de patogenicidade. O patógeno em estudo foi identificado como Meloidogyne incognita. O teste de patogenicidade confirmou que ocorreu a suplantação de resistência do híbrido de tomateiro, portador do gene Mi, por esta população virulenta de M. incognita. |
| doi_str_mv | 10.1590/0103-8478cr20180784 |
| format | Article |
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RESUMO: Problemas causados pelos nematoides-das-galhas, pertencentes ao gênero Meloidogyne podem ser controlados com a introdução de genes de resistência em cultivares comerciais de tomateiro. No entanto, plantas do híbrido ‘Heinz 9992’ adequadas ao processamento industrial, portadoras do gene Mi, foram encontradas com suas raízes severamente infectadas, em um cultivo experimental no município de Morrinhos (GO) com sintomas típicos de galhas causadas por Meloidogyne spp. Após dissecar as galhas presentes nas amostras de raízes, as fêmeas do nematoide foram retiradas para a análise do padrão perineal e a caracterização bioquímica por eletroforese de isoenzimas, além do teste de patogenicidade. O patógeno em estudo foi identificado como Meloidogyne incognita. O teste de patogenicidade confirmou que ocorreu a suplantação de resistência do híbrido de tomateiro, portador do gene Mi, por esta população virulenta de M. incognita.</description><identifier>ISSN: 0103-8478</identifier><identifier>ISSN: 1678-4596</identifier><identifier>EISSN: 1678-4596</identifier><identifier>DOI: 10.1590/0103-8478cr20180784</identifier><language>eng</language><publisher>Santa Maria: Universidade Federal de Santa Maria Centro de Ciencias Rurais</publisher><subject>AGRONOMY ; Conflicts of interest ; Cultivars ; Cultivation ; Dehydrogenases ; Electrophoresis ; Galls ; Genes ; hortaliças ; Isoenzymes ; Laboratories ; Meloidogyne ; Meloidogyne incognita ; Mi gene ; Mutation ; Nematodes ; Pathogenicity ; Pathogens ; Perineum ; Pest resistance ; Population ; Solanum lycopersicum ; Temperature ; Tomatoes ; virulência</subject><ispartof>Ciência rural, 2019, Vol.49 (9)</ispartof><rights>2019. This work is published under https://creativecommons.org/licenses/by/4.0/deed.en (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>This work is licensed under a Creative Commons Attribution 4.0 International License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c427t-f8326f40d543d98fcc09197d0e7fa4878838c05cd264ff6c6a3fb8e98d0962193</citedby><cites>FETCH-LOGICAL-c427t-f8326f40d543d98fcc09197d0e7fa4878838c05cd264ff6c6a3fb8e98d0962193</cites><orcidid>0000-0002-9984-2405 ; 0000-0003-2451-5300 ; 0000-0001-8075-7561 ; 0000-0002-4778-627X ; 0000-0002-7018-7304</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,780,784,864,885,4024,27923,27924,27925</link.rule.ids></links><search><creatorcontrib>Silva, Rodrigo Vieira da</creatorcontrib><creatorcontrib>Lima, Brenda Ventura de</creatorcontrib><creatorcontrib>Peixoto, Fabricio Rodrigues</creatorcontrib><creatorcontrib>Gondim, João Pedro Elias</creatorcontrib><creatorcontrib>Miranda, Bruno Eduardo Cardoso de</creatorcontrib><title>Supplanting resistance of the Mi gene by root-knot nematode in industrial tomato in the Cerrado in Goiás State of Brazil</title><title>Ciência rural</title><addtitle>Cienc. Rural</addtitle><description>Problems with root-knot nematodes, caused by genus Meloidogyne, can be controlled through the introduction of resistance genes in commercial varieties of tomatoes. However, plants of the hybrid ‘Heinz 9992’ for industrial processing, carrying the Mi gene, were reported with their roots severely infected in experimental cultivation in Goiás State of Brazil with symptoms typical of galls caused by Meloidogyne spp. After dissecting the galls present in the root samples, the females of the nematodes were removed and afterwards, performed the analysis of the perineal pattern and the biochemical characterization by electrophoresis of isoenzymes, besides the pathogenicity test. The pathogen analyzed was identified as Meloidogyne incognita. The pathogenicity test confirmed the supplanting resistance of the tomato hybrid with the Mi gene by this virulent population of M. incognita.
RESUMO: Problemas causados pelos nematoides-das-galhas, pertencentes ao gênero Meloidogyne podem ser controlados com a introdução de genes de resistência em cultivares comerciais de tomateiro. No entanto, plantas do híbrido ‘Heinz 9992’ adequadas ao processamento industrial, portadoras do gene Mi, foram encontradas com suas raízes severamente infectadas, em um cultivo experimental no município de Morrinhos (GO) com sintomas típicos de galhas causadas por Meloidogyne spp. Após dissecar as galhas presentes nas amostras de raízes, as fêmeas do nematoide foram retiradas para a análise do padrão perineal e a caracterização bioquímica por eletroforese de isoenzimas, além do teste de patogenicidade. O patógeno em estudo foi identificado como Meloidogyne incognita. 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Rural</addtitle><date>2019</date><risdate>2019</risdate><volume>49</volume><issue>9</issue><issn>0103-8478</issn><issn>1678-4596</issn><eissn>1678-4596</eissn><abstract>Problems with root-knot nematodes, caused by genus Meloidogyne, can be controlled through the introduction of resistance genes in commercial varieties of tomatoes. However, plants of the hybrid ‘Heinz 9992’ for industrial processing, carrying the Mi gene, were reported with their roots severely infected in experimental cultivation in Goiás State of Brazil with symptoms typical of galls caused by Meloidogyne spp. After dissecting the galls present in the root samples, the females of the nematodes were removed and afterwards, performed the analysis of the perineal pattern and the biochemical characterization by electrophoresis of isoenzymes, besides the pathogenicity test. The pathogen analyzed was identified as Meloidogyne incognita. The pathogenicity test confirmed the supplanting resistance of the tomato hybrid with the Mi gene by this virulent population of M. incognita.
RESUMO: Problemas causados pelos nematoides-das-galhas, pertencentes ao gênero Meloidogyne podem ser controlados com a introdução de genes de resistência em cultivares comerciais de tomateiro. No entanto, plantas do híbrido ‘Heinz 9992’ adequadas ao processamento industrial, portadoras do gene Mi, foram encontradas com suas raízes severamente infectadas, em um cultivo experimental no município de Morrinhos (GO) com sintomas típicos de galhas causadas por Meloidogyne spp. Após dissecar as galhas presentes nas amostras de raízes, as fêmeas do nematoide foram retiradas para a análise do padrão perineal e a caracterização bioquímica por eletroforese de isoenzimas, além do teste de patogenicidade. O patógeno em estudo foi identificado como Meloidogyne incognita. O teste de patogenicidade confirmou que ocorreu a suplantação de resistência do híbrido de tomateiro, portador do gene Mi, por esta população virulenta de M. incognita.</abstract><cop>Santa Maria</cop><pub>Universidade Federal de Santa Maria Centro de Ciencias Rurais</pub><doi>10.1590/0103-8478cr20180784</doi><orcidid>https://orcid.org/0000-0002-9984-2405</orcidid><orcidid>https://orcid.org/0000-0003-2451-5300</orcidid><orcidid>https://orcid.org/0000-0001-8075-7561</orcidid><orcidid>https://orcid.org/0000-0002-4778-627X</orcidid><orcidid>https://orcid.org/0000-0002-7018-7304</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | AGRONOMY Conflicts of interest Cultivars Cultivation Dehydrogenases Electrophoresis Galls Genes hortaliças Isoenzymes Laboratories Meloidogyne Meloidogyne incognita Mi gene Mutation Nematodes Pathogenicity Pathogens Perineum Pest resistance Population Solanum lycopersicum Temperature Tomatoes virulência |
| title | Supplanting resistance of the Mi gene by root-knot nematode in industrial tomato in the Cerrado in Goiás State of Brazil |
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