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dc.contributor.author
Curzi, Matias J.
dc.contributor.author
Zavala, Jorge Alberto
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Spencer, Joseph L.
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Seufferheld, Manfredo Jose
dc.date.available
2018-09-17T21:42:42Z
dc.date.issued
2012-06
dc.identifier.citation
Curzi, Matias J.; Zavala, Jorge Alberto; Spencer, Joseph L.; Seufferheld, Manfredo Jose; Abnormally high digestive enzyme activity and gene expression explain the contemporary evolution of a diabrotica biotype able to feed on soybeans; Wiley; Ecology and Evolution; 2; 8; 6-2012; 2005-2017
dc.identifier.issn
2045-7758
dc.identifier.uri
http://hdl.handle.net/11336/60020
dc.description.abstract
Western corn rootworm (Diabrotica virgifera) (WCR) depends on the continuous availability of corn. Broad adoption of annual crop rotation between corn (Zea mays) and nonhost soybean (Glycine max) exploited WCR biology to provide excellent WCR control, but this practice dramatically reduced landscape heterogeneity in East-central Illinois and imposed intense selection pressure. This selection resulted in behavioral changes and "rotation-resistant" (RR) WCR adults. Although soybeans are well defended against Coleopteran insects by cysteine protease inhibitors, RR-WCR feed on soybean foliage and remain long enough to deposit eggs that will hatch the following spring and larvae will feed on roots of planted corn. Other than documenting changes in insect mobility and egg laying behavior, 15 years of research have failed to identify any diagnostic differences between wild-type (WT)- and RR-WCR or a mechanism that allows for prolonged RR-WCR feeding and survival in soybean fields. We documented differences in behavior, physiology, digestive protease activity (threefold to fourfold increases), and protease gene expression in the gut of RR-WCR adults. Our data suggest that higher constitutive activity levels of cathepsin L are part of the mechanism that enables populations of WCR to circumvent soybean defenses, and thus, crop rotation. These new insights into the mechanism of WCR tolerance of soybean herbivory transcend the issue of RR-WCR diagnostics and management to link changes in insect gut proteolytic activity and behavior with landscape heterogeneity. The RR-WCR illustrates how agroecological factors can affect the evolution of insects in human-altered ecosystems.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Contemporary Evolution
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Landscape Heterogeneity
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Plant Defenses
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Plant-Insect Interactions
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Protease Inhibitors
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Agricultura
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Agricultura, Silvicultura y Pesca
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CIENCIAS AGRÍCOLAS
dc.title
Abnormally high digestive enzyme activity and gene expression explain the contemporary evolution of a diabrotica biotype able to feed on soybeans
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-09-12T19:10:41Z
dc.journal.volume
2
dc.journal.number
8
dc.journal.pagination
2005-2017
dc.journal.pais
Reino Unido
dc.journal.ciudad
Hoboken
dc.description.fil
Fil: Curzi, Matias J.. University of Illinois at Urbana; Estados Unidos
dc.description.fil
Fil: Zavala, Jorge Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales; Argentina
dc.description.fil
Fil: Spencer, Joseph L.. University of Illinois at Urbana; Estados Unidos
dc.description.fil
Fil: Seufferheld, Manfredo Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales; Argentina
dc.journal.title
Ecology and Evolution
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/ece3.331
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/ece3.331
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