Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/25304
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dc.contributor.authorBoas, Mariana Vilas-
dc.contributor.authorGonçalves, Susana C.-
dc.contributor.authorPortugal, Antonio-
dc.contributor.authorFreitas, Helena-
dc.contributor.authorGonçalves, M. Teresa-
dc.date.accessioned2014-03-07T11:48:44Z-
dc.date.available2014-03-07T11:48:44Z-
dc.date.issued2014-
dc.identifier.urihttp://hdl.handle.net/10316/25304-
dc.description.abstractThe defense hypothesis is commonly used to explain the adaptive role ofmetal hyperaccumulation. We tested this hypothesis using two Brassicaceae congeneric species: Alyssum pintodasilvae, a Ni hyperaccumulator, and the non-accumulator Alyssum simplex both growing on serpentine soils in Portugal. Artificial diet disks amended with powdered leaves from each plant species were used to compare the performance (mortality, biomass change) and feeding behavior of Tribolium castaneum in no-choice and choice tests. The performance of T. castaneum was not affected at several concentrations of A. pintodasilvae or A. simplex in no-choice tests. However, the consumption of plant-amended disks was significantly lower than that of control disks, irrespectively of the species fed. Accordingly, when insects were given an alternative food choice, disks of both plant species were significantly less consumed than control disks. Moreover, insects did not discriminate between disks in the combination “A. pintodasilvae + A. simplex”. Contrary to our expectations, these results suggest that both plant species have equally effective defenses against herbivory. While Ni is believed to be part of the deterrence mechanism in the hyperaccumulator A. pintodasilvae, it seems likely that organic compounds, possibly glucosinolates, play an important role in the defense of A. simplex or in both species.por
dc.description.sponsorshipThis study was fully supported by the Centre for Functional Ecology, University of Coimbra.por
dc.language.isoengpor
dc.publisherElsevier B.V.por
dc.rightsopenAccesspor
dc.subjectNi hyperaccumulationpor
dc.subjectAlyssum pintodasilvaepor
dc.subjectAlyssum simplexpor
dc.subjectInorganic defense hypothesispor
dc.subjectTribolium castaneumpor
dc.subjectSerpentine soilpor
dc.titleA Ni hyperaccumulator and a congeneric non-accumulator reveal equally effective defenses against herbivorypor
dc.typearticlepor
degois.publication.firstPage11por
degois.publication.lastPage15por
degois.publication.titleScience of the Total Environmentpor
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0048969713007651por
dc.peerreviewedYespor
dc.identifier.doi10.1016/j.scitotenv.2013.06.113-
degois.publication.volume466-467por
item.grantfulltextopen-
item.languageiso639-1en-
item.fulltextCom Texto completo-
Appears in Collections:FCTUC Ciências da Vida - Artigos em Revistas Internacionais
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