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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/75224
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dc.contributor.authorBacci, Maurício-
dc.contributor.authorBueno, Odair Correa-
dc.contributor.authorRodrigues, André-
dc.contributor.authorPagnocca, Fernando Carlos-
dc.contributor.authorSomera, Alexandre Favarin-
dc.contributor.authorSilva, Aline-
dc.date.accessioned2014-05-27T11:29:01Z-
dc.date.accessioned2016-10-25T18:47:56Z-
dc.date.available2014-05-27T11:29:01Z-
dc.date.available2016-10-25T18:47:56Z-
dc.date.issued2013-05-01-
dc.identifierhttp://dx.doi.org/10.1016/j.jinsphys.2013.02.007-
dc.identifier.citationJournal of Insect Physiology, v. 59, n. 5, p. 525-531, 2013.-
dc.identifier.issn0022-1910-
dc.identifier.urihttp://hdl.handle.net/11449/75224-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/75224-
dc.description.abstractMutualistic associations shape the evolution in different organism groups. The association between the leaf-cutter ant Atta sexdens and the basidiomycete fungus Leucoagaricus gongylophorus has enabled them to degrade starch from plant material generating glucose, which is a major food source for both mutualists. Starch degradation is promoted by enzymes contained in the fecal fluid that ants deposit on the fungus culture in cut leaves inside the nests. To understand the dynamics of starch degradation in ant nests, we purified and characterized starch degrading enzymes from the ant fecal fluid and from laboratory cultures of L. gongylophorus and found that the ants intestine positively selects fungal α-amylase and a maltase likely produced by the ants, as a negative selection is imposed to fungal maltase and ant α-amylases. Selected enzymes are more resistant to catabolic repression by glucose and proposed to structure a metabolic pathway in which the fungal α-amylase initiates starch catalysis to generate byproducts which are sequentially degraded by the maltase to produce glucose. The pathway is responsible for effective degradation of starch and proposed to represent a major evolutionary innovation enabling efficient starch assimilation from plant material by leaf-cutters. © 2013 Elsevier Ltd.en
dc.format.extent525-531-
dc.language.isoeng-
dc.sourceScopus-
dc.subjectAmylase-
dc.subjectAttini-
dc.subjectMaltase-
dc.subjectMutualism-
dc.subjectant-
dc.subjectbiodegradation-
dc.subjectentomology-
dc.subjectenzyme activity-
dc.subjectevolutionary biology-
dc.subjectfungus-
dc.subjectglucose-
dc.subjectherbivory-
dc.subjectmetabolism-
dc.subjectmutualism-
dc.subjectstarch-
dc.titleA metabolic pathway assembled by enzyme selection may support herbivory of leaf-cutter ants on plant starchen
dc.typeoutro-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionUniversidade Estadual de Santa Cruz (UESC)-
dc.description.affiliationUniversidade Estadual Paulista Instituto de Biociências de Rio Claro Centro de Estudos de Insetos Sociais/Departamento de Bioquímica e Microbiologia-
dc.description.affiliationUniversidade Estadual Paulista Instituto de Biociências de Rio Claro Centro de Estudos de Insetos Sociais/Departamento de Biologia-
dc.description.affiliationDepartamento de Ciências Biológicas Universidade Estadual de Santa Cruz-
dc.description.affiliationUnespUniversidade Estadual Paulista Instituto de Biociências de Rio Claro Centro de Estudos de Insetos Sociais/Departamento de Bioquímica e Microbiologia-
dc.description.affiliationUnespUniversidade Estadual Paulista Instituto de Biociências de Rio Claro Centro de Estudos de Insetos Sociais/Departamento de Biologia-
dc.identifier.doi10.1016/j.jinsphys.2013.02.007-
dc.identifier.wosWOS:000319087700001-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofJournal of Insect Physiology-
dc.identifier.scopus2-s2.0-84876337896-
dc.identifier.orcid0000-0002-4164-9362pt
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