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Water-Borne Cues of a Non-Indigenous Seaweed Mediate Grazer-Deterrent Responses in Native Seaweeds, but Not Vice Versa

2012-06Journal article Open Access
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dc.contributor.authorYun, Hee Young
dc.contributor.authorEngelen, Aschwin H.
dc.contributor.authorSantos, Rui O.
dc.contributor.authorMolis, Markus
dc.date.accessioned2018-12-07T14:53:33Z
dc.date.available2018-12-07T14:53:33Z
dc.date.issued2012-06
dc.description.abstractPlants optimise their resistance to herbivores by regulating deterrent responses on demand. Induction of anti-herbivory defences can occur directly in grazed plants or from emission of risk cues to the environment, which modifies interactions of adjacent plants with, for instance, their consumers. This study confirmed the induction of anti-herbivory responses by water-borne risk cues between adjoining con-specific seaweeds and firstly examined whether plant-plant signalling also exists among adjacent hetero-specific seaweeds. Furthermore, differential abilities and geographic variation in plant-plant signalling by a non-indigenous seaweed as well as native seaweeds were assessed. Twelve-day induction experiments using the non-indigenous seaweed Sargassum muticum were conducted in the laboratory in Portugal and Germany with one local con-familiar (Portugal: Cystoseira humilis, Germany: Halidrys siliquosa) and hetero-familiar native species (Portugal: Fucus spiralis, Germany: F. vesiculosus). All seaweeds were grazed by a local isopod species (Portugal: Stenosoma nadejda, Germany: Idotea baltica) and were positioned upstream of con-and hetero-specific seaweeds. Grazing-induced modification in seaweed traits were tested in three-day feeding assays between cue-exposed and cue-free (= control) pieces of both fresh and reconstituted seaweeds. Both Fucus species reduced their palatability when positioned downstream of isopod-grazed con-specifics. Yet, the palatability of non-indigenous S. muticum remained constant in the presence of upstream grazed con-specifics and native hetero-specifics. In contrast, both con-familiar (but neither hetero-familiar) native species reduced palatability when located downstream of grazed S. muticum. Similar patterns of grazer-deterrent responses to water-borne cues were observed on both European shores, and were almost identical between assays using fresh and reconstituted seaweeds. Hence, seaweeds may use plant-plant signalling to optimise chemical resistance to consumers, though this ability appeared to be species-specific. Furthermore, this study suggests that native species may benefit more than a non-indigenous species from water-borne cue mediated reduction in consumption as only natives responded to signals emitted by hetero-specifics.
dc.description.sponsorshipPortuguese Science Foundation (Fundacao para a Ciencia e a Tecnologia, FCT) under Programa Operacional Ciencia e Inovacao do Quadro Comunitario de Apoio III e comparticipado pelo Fundo Comunitario Europeu FEDER [POCI/MAR/55377/2004]; FCT scholarships [SFRH/BPD/7153/2001, SFRH/BPD/63703/2009]
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.doi10.1371/journal.pone.0038804
dc.identifier.issn1932-6203
dc.identifier.urihttp://hdl.handle.net/10400.1/11566
dc.language.isoeng
dc.peerreviewedyes
dc.publisherPublic Library of Science
dc.relationThe invasive theory of the pest seaweed Sargassum muticum in Southern Portugal.
dc.relationDEMOGRAPHIC ASSESSMENT OF CONTEMPORARY BIOME DEGRADATION: PROVIDING MANAGEMENT AND RESTORATION TOOLS FOR CORAL, KELP AND SEAGRASS COMMUNITIES
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectInduced plant-responses
dc.subjectInduced resistance
dc.subjectFucus-vesiculosus
dc.subjectChemical defense
dc.subjectAscophyllum-nodosum
dc.subjectSargassum-muticum
dc.subjectAirborne signals
dc.subjectWild tobacco
dc.subjectHerbivores
dc.subjectSagebrush
dc.titleWater-Borne Cues of a Non-Indigenous Seaweed Mediate Grazer-Deterrent Responses in Native Seaweeds, but Not Vice Versa
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleThe invasive theory of the pest seaweed Sargassum muticum in Southern Portugal.
oaire.awardTitleDEMOGRAPHIC ASSESSMENT OF CONTEMPORARY BIOME DEGRADATION: PROVIDING MANAGEMENT AND RESTORATION TOOLS FOR CORAL, KELP AND SEAGRASS COMMUNITIES
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POCI/POCI%2FMAR%2F55377%2F2004/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F7153%2F2001/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBPD%2F63703%2F2009/PT
oaire.citation.issue6
oaire.citation.startPagee38804
oaire.citation.titlePLoS ONE
oaire.citation.volume7
oaire.fundingStreamPOCI
oaire.fundingStreamSFRH
person.familyNameEngelen
person.familyNameSantos
person.givenNameAschwin
person.givenNameRui
person.identifier42560
person.identifier.ciencia-id911A-9A0C-744D
person.identifier.ciencia-id9B18-444D-2244
person.identifier.orcid0000-0002-9579-9606
person.identifier.orcid0000-0002-7861-4366
person.identifier.ridM-3432-2013
person.identifier.ridB-4168-2008
person.identifier.scopus-author-id6701622770
person.identifier.scopus-author-id7201375018
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccess
rcaap.typearticle
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