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Shifting from acquisitive to conservative: the effects of Phoradendron affine (Santalaceae) infection in leaf morpho-physiological traits of a Neotropical tree species

dc.contributor.authorScalon, Marina Correa
dc.contributor.authorReis, Sabrina Alves dos [UNESP]
dc.contributor.authorRossatto, Davi Rodrigo [UNESP]
dc.contributor.institutionUniversidade de Brasília (UnB)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-11-28T04:17:17Z
dc.date.available2018-11-28T04:17:17Z
dc.date.issued2017-01-01
dc.description.abstractMistletoes are parasitic plants that penetrate the host branches through a modified root and connect to their xylem to acquire nutrients and water. Under mistletoe infection, resources that would otherwise be used by the host are stolen by the parasite. Our aim was to compare leaf morpho-physiological traits between healthy uninfected branches and mistletoe-infected branches of a Neotropical tree species (Handroanthus chrysotrichus (Mart. ex DC.) Mattos - Bignoniaceae). We also investigated differences between mistletoe and host leaf traits. Morphological (petiole length and thickness, leaf area and thickness, and specific leaf area) and physiological leaf traits (pre-dawn and midday water potential) were measured in 10 individuals infected with the mistletoe Phoradendron affine (Pohl ex DC.) Engl. & K.Krause (Santalaceae). Mistletoes showed smaller and thicker leaves with lower pre-dawn and midday water potential, suggesting that mistletoes are more profligate water users than the host. Host leaves from infected branches were scleromorphic and showed stronger water-use control (less negative water potential) than host leaves from uninfected branches. Our results indicated that leaves from infected branches shifted to a more conservative resource-use strategy as a response to a water and nutrient imbalance caused by mistletoe infection.en
dc.description.affiliationUniv Brasilia, Inst Ciencias Biol, Dept Ecol, Caixa Postal 04457, BR-70904970 Brasilia, DF, Brazil
dc.description.affiliationUniv Estadual Paulista, Dept Biol, Fac Ciencias Agr & Vet, Via Acesso Prof Paulo Donatto Castellane S-N, BR-14884900 Jaboticabal, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Biol, Fac Ciencias Agr & Vet, Via Acesso Prof Paulo Donatto Castellane S-N, BR-14884900 Jaboticabal, SP, Brazil
dc.description.sponsorshipPro-Reitoria de Pesquisa (PROPE-UNESP)
dc.description.sponsorshipIdPro-Reitoria de Pesquisa (PROPE-UNESP): PIBIC/UNESP/PROPE-33198
dc.format.extent31-37
dc.identifierhttp://dx.doi.org/10.1071/BT16177
dc.identifier.citationAustralian Journal Of Botany. Clayton: Csiro Publishing, v. 65, n. 1, p. 31-37, 2017.
dc.identifier.doi10.1071/BT16177
dc.identifier.fileWOS000395575500004.pdf
dc.identifier.issn0067-1924
dc.identifier.urihttp://hdl.handle.net/11449/165493
dc.identifier.wosWOS:000395575500004
dc.language.isoeng
dc.publisherCsiro Publishing
dc.relation.ispartofAustralian Journal Of Botany
dc.relation.ispartofsjr0,393
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjecthemiparasite
dc.subjectleaf morphology
dc.subjectleaf traits
dc.subjectleaf water potential
dc.subjectresource use
dc.titleShifting from acquisitive to conservative: the effects of Phoradendron affine (Santalaceae) infection in leaf morpho-physiological traits of a Neotropical tree speciesen
dc.typeArtigo
dcterms.rightsHolderCsiro Publishing
unesp.departmentBiologia - FCAVpt

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