Alterations of the resin canal system of Pinus pinaster seedlings after fertilization of a healthy and of a Hylobius abietis attacked stand

Changes in resource availability and biotic and abiotic stress may alter the defensive mechanisms of pine trees. The effect of fertilisation on the resin canal structure of Pinus pinaster seedlings established in two trials in NW Spain, one attacked by Hylobius abietis and the other non-attacked, wa...

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Autores: Moreira Tomé, Xoaquín, Sampedro Pérez, Luis, Zas Arregui, Rafael, Solla, Alejandro
Tipo de recurso: artículo
Fecha de publicación:2008
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/23999
Acceso en línea:http://hdl.handle.net/10261/23999
Access Level:acceso abierto
Palabra clave:Herbivory
Constitutive defences
Induced defence
Phloem
Xylem
Large pine weevil
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spelling Alterations of the resin canal system of Pinus pinaster seedlings after fertilization of a healthy and of a Hylobius abietis attacked standMoreira Tomé, XoaquínSampedro Pérez, LuisZas Arregui, RafaelSolla, AlejandroHerbivoryConstitutive defencesInduced defencePhloemXylemLarge pine weevilChanges in resource availability and biotic and abiotic stress may alter the defensive mechanisms of pine trees. The effect of fertilisation on the resin canal structure of Pinus pinaster seedlings established in two trials in NW Spain, one attacked by Hylobius abietis and the other non-attacked, was studied. The leaders of 50 plants were destructively sampled and the resin canal density, the canal area and its relative conductive area in the phloem and xylem were assessed. Experimentally increased nutrient availability significantly decreased resin canal density in the phloem of the seedlings in the two analysed trials, where unfertilised seedlings presented up to 30% more resin canal density than the fertilised seedlings (mean value ± SEM = 0.32 ± 0.02 resin canals mm−2 in the fertilised plants versus 0.45 ± 0.04 resin canals mm−2 in the control plants). Fertilisation had no effect on the resin canal system in the xylem, but significantly increased tracheid size. Significant differences of resin canals among sites were observed mainly in the xylem; the resin canal density was 1.7-fold greater in the attacked site than in the non-attacked site. The similar structure of phloem resin canals in both sites supports that phloem resin canals are constitutive mechanisms of defence in P. pinaster, whereas xylem resin canals would be constitutive mechanisms but also inducible mechanisms of resistance following the attack of pine weevils or bark beetles.Research was supported by the INIA RTA05-173 project.Peer reviewedSpringer Nature201020102008info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501156674 bytesapplication/pdfhttp://hdl.handle.net/10261/23999reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1007/s00468-008-0237-4info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/239992026-05-22T06:33:51Z
dc.title.none.fl_str_mv Alterations of the resin canal system of Pinus pinaster seedlings after fertilization of a healthy and of a Hylobius abietis attacked stand
title Alterations of the resin canal system of Pinus pinaster seedlings after fertilization of a healthy and of a Hylobius abietis attacked stand
spellingShingle Alterations of the resin canal system of Pinus pinaster seedlings after fertilization of a healthy and of a Hylobius abietis attacked stand
Moreira Tomé, Xoaquín
Herbivory
Constitutive defences
Induced defence
Phloem
Xylem
Large pine weevil
title_short Alterations of the resin canal system of Pinus pinaster seedlings after fertilization of a healthy and of a Hylobius abietis attacked stand
title_full Alterations of the resin canal system of Pinus pinaster seedlings after fertilization of a healthy and of a Hylobius abietis attacked stand
title_fullStr Alterations of the resin canal system of Pinus pinaster seedlings after fertilization of a healthy and of a Hylobius abietis attacked stand
title_full_unstemmed Alterations of the resin canal system of Pinus pinaster seedlings after fertilization of a healthy and of a Hylobius abietis attacked stand
title_sort Alterations of the resin canal system of Pinus pinaster seedlings after fertilization of a healthy and of a Hylobius abietis attacked stand
dc.creator.none.fl_str_mv Moreira Tomé, Xoaquín
Sampedro Pérez, Luis
Zas Arregui, Rafael
Solla, Alejandro
author Moreira Tomé, Xoaquín
author_facet Moreira Tomé, Xoaquín
Sampedro Pérez, Luis
Zas Arregui, Rafael
Solla, Alejandro
author_role author
author2 Sampedro Pérez, Luis
Zas Arregui, Rafael
Solla, Alejandro
author2_role author
author
author
dc.subject.none.fl_str_mv Herbivory
Constitutive defences
Induced defence
Phloem
Xylem
Large pine weevil
topic Herbivory
Constitutive defences
Induced defence
Phloem
Xylem
Large pine weevil
description Changes in resource availability and biotic and abiotic stress may alter the defensive mechanisms of pine trees. The effect of fertilisation on the resin canal structure of Pinus pinaster seedlings established in two trials in NW Spain, one attacked by Hylobius abietis and the other non-attacked, was studied. The leaders of 50 plants were destructively sampled and the resin canal density, the canal area and its relative conductive area in the phloem and xylem were assessed. Experimentally increased nutrient availability significantly decreased resin canal density in the phloem of the seedlings in the two analysed trials, where unfertilised seedlings presented up to 30% more resin canal density than the fertilised seedlings (mean value ± SEM = 0.32 ± 0.02 resin canals mm−2 in the fertilised plants versus 0.45 ± 0.04 resin canals mm−2 in the control plants). Fertilisation had no effect on the resin canal system in the xylem, but significantly increased tracheid size. Significant differences of resin canals among sites were observed mainly in the xylem; the resin canal density was 1.7-fold greater in the attacked site than in the non-attacked site. The similar structure of phloem resin canals in both sites supports that phloem resin canals are constitutive mechanisms of defence in P. pinaster, whereas xylem resin canals would be constitutive mechanisms but also inducible mechanisms of resistance following the attack of pine weevils or bark beetles.
publishDate 2008
dc.date.none.fl_str_mv 2008
2010
2010
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/23999
url http://hdl.handle.net/10261/23999
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1007/s00468-008-0237-4
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 156674 bytes
application/pdf
dc.publisher.none.fl_str_mv Springer Nature
publisher.none.fl_str_mv Springer Nature
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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