Tolerance in Maize Landraces to Diabrotica speciosa (Coleoptera: Chrysomelidae) Larvae and Its Relationship to Plant Pigments, Compatible Osmolytes, and Vigor

dc.contributor.authorCosta, Eduardo Neves [UNESP]
dc.contributor.authorSardinha de Souza, Bruno Henrique [UNESP]
dc.contributor.authorRibeiro, Zulene Antonio [UNESP]
dc.contributor.authorMathias dos Santos, Durvalina Maria [UNESP]
dc.contributor.authorBoica Junior, Arlindo Leal [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionFundacao Univ Fed Grande Dourados
dc.contributor.institutionUniversidade Federal de Lavras (UFLA)
dc.date.accessioned2021-06-25T15:04:45Z
dc.date.available2021-06-25T15:04:45Z
dc.date.issued2021-02-01
dc.description.abstractThe rootworm Diabrotica speciosa (Germar) is native to South America and causes severe economic losses to several crops due to root feeding and disease spread. In maize (Zea mays L.), losses in production come from larval rootworm attack on plant roots resulting in plant health problems, including stalk lodging. More options for controlling this pest are needed to create well balanced, integrated pest management programs for farmers in this region. Natural sources of tolerance in maize genotypes are important for maize breeding programs, and this study investigated the expression of tolerance in several Brazilian maize landraces to D. speciosa. Plant vigor and compounds associated with plant health, including chlorophylls, carotenoids, glycine betaine, and proline were assessed for each landrace. Five landraces and one maize cultivar were selected based on their levels of antibiosis-resistance to D. speciosa that were determined in a prior screening. The percent reduction in plant growth was used as the measure of tolerance. The landrace Azteca was classified as tolerant to D. speciosa larval feeding, displaying less reduction in plant matter despite having lower plant vigor. This landrace also had higher amounts of chlorophyl and carotenoid pigments, suggesting a positive correlation between tolerance to D. speciosa and higher contents of these photosynthetic pigments. The compatible osmolytes glycine betaine and proline do not seem to be associated with tolerance in maize landraces to D. speciosa larvae. Landrace Azteca seems promising for plant breeding, and repeated field studies are needed to confirm its suitability in maize integrated pest management.en
dc.description.affiliationUniv Estadual Paulista, Fac Ciencias Agr & Vet, Dept Ciencias Prod Agr, Campus Jaboticabal, BR-14884900 Jaboticabal, SP, Brazil
dc.description.affiliationFundacao Univ Fed Grande Dourados, Fac Ciencias Agr, BR-79804970 Dourados, MS, Brazil
dc.description.affiliationUniv Fed Lavras, Dept Entomol, BR-37200000 Lavras, MG, Brazil
dc.description.affiliationUniv Estadual Paulista, Fac Ciencias Agr & Vet, Dept Biol Aplicada Agr, Campus Jaboticabal, BR-14884900 Jaboticabal, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Fac Ciencias Agr & Vet, Dept Ciencias Prod Agr, Campus Jaboticabal, BR-14884900 Jaboticabal, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Fac Ciencias Agr & Vet, Dept Biol Aplicada Agr, Campus Jaboticabal, BR-14884900 Jaboticabal, SP, Brazil
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdCNPq: 140589/2013-9
dc.format.extent377-386
dc.identifierhttp://dx.doi.org/10.1093/jee/toaa292
dc.identifier.citationJournal Of Economic Entomology. Cary: Oxford Univ Press Inc, v. 114, n. 1, p. 377-386, 2021.
dc.identifier.doi10.1093/jee/toaa292
dc.identifier.issn0022-0493
dc.identifier.urihttp://hdl.handle.net/11449/210319
dc.identifier.wosWOS:000648959000042
dc.language.isoeng
dc.publisherOxford Univ Press Inc
dc.relation.ispartofJournal Of Economic Entomology
dc.sourceWeb of Science
dc.subjectZea mays L
dc.subjectnative resistance
dc.subjectchlorophyl
dc.subjectcarotenoids
dc.subjectglycine betaine
dc.titleTolerance in Maize Landraces to Diabrotica speciosa (Coleoptera: Chrysomelidae) Larvae and Its Relationship to Plant Pigments, Compatible Osmolytes, and Vigoren
dc.typeArtigo
dcterms.licensehttp://www.oxfordjournals.org/access_purchase/self-archiving_policyb.html
dcterms.rightsHolderOxford Univ Press Inc
unesp.departmentBiologia - FCAVpt

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