Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/199398
Type: Artigo de periódico
Title: Host Plant Invests In Growth Rather Than Chemical Defense When Attacked By A Specialist Herbivore.
Author: Arab, Alberto
Trigo, José Roberto
Abstract: Plant defensive compounds may be a cost rather than a benefit when plants are attacked by specialist insects that may overcome chemical barriers by strategies such as sequestering plant compounds. Plants may respond to specialist herbivores by compensatory growth rather than chemical defense. To explore the use of defensive chemistry vs. compensatory growth we studied Brugmansia suaveolens (Solanaceae) and the specialist larvae of the ithomiine butterfly Placidina euryanassa, which sequester defensive tropane alkaloids (TAs) from this host plant. We investigated whether the concentration of TAs in B. suaveolens was changed by P. euryanassa damage, and whether plants invest in growth, when damaged by the specialist. Larvae feeding during 24 hr significantly decreased TAs in damaged plants, but they returned to control levels after 15 days without damage. Damaged and undamaged plants did not differ significantly in leaf area after 15 days, indicating compensatory growth. Our results suggest that B. suaveolens responds to herbivory by the specialist P. euryanassa by investing in growth rather than chemical defense.
Subject: Animals
Butterflies
Host-parasite Interactions
Larva
Solanaceae
Tropanes
Rights: fechado
Identifier DOI: 10.1007/s10886-011-9955-y
Address: http://www.ncbi.nlm.nih.gov/pubmed/21523430
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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