Susceptibility to Melampsora leaf rust of poplar clones from diverse genetic backgrounds: effects on photochemistry and water relations

The selection of resistant genotypes is the most appropriate approach in the prevention of the reduction of biomass and mortality caused by rust infection in poplar plantations. Thus, it is pertinent that we improve our understanding of the consequences that this fungal disease has on leaf physiolog...

Descripción completa

Detalles Bibliográficos
Autores: Elena Jiménez, Georgina, Fernàndez Martínez, Jordi, Zacchini, Massimo, Moret, Assumpció, Fleck, Isabel
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2014
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/199981
Acceso en línea:https://hdl.handle.net/2445/199981
Access Level:acceso abierto
Palabra clave:Clorofil·la
Plantacions
Basidiomicets
Chlorophyll
Plantations
Basidiomycetes
id ES_f7550051ae1ccbb0c8a020ccb01ec754
oai_identifier_str oai:diposit.ub.edu:2445/199981
network_acronym_str ES
network_name_str España
repository_id_str
spelling Susceptibility to Melampsora leaf rust of poplar clones from diverse genetic backgrounds: effects on photochemistry and water relationsElena Jiménez, GeorginaFernàndez Martínez, JordiZacchini, MassimoMoret, AssumpcióFleck, IsabelClorofil·laPlantacionsBasidiomicetsChlorophyllPlantationsBasidiomycetesThe selection of resistant genotypes is the most appropriate approach in the prevention of the reduction of biomass and mortality caused by rust infection in poplar plantations. Thus, it is pertinent that we improve our understanding of the consequences that this fungal disease has on leaf physiology. Here, we studied the susceptibility to Melampsora rust in three different poplar clones of commercial interest: Lux clone - Populus deltoides Batr. (cottonwood) and Luisa Avanzo and Adige clones - both Populus × canadensis Mönch. The most susceptible clone to the infection was L. Avanzo whereas Lux and especially Adige were only slightly affected. The propagation of the disease was very rapid in L. Avanzo; their leaves showed a high incidence and severity of the disease in early and advanced stages of infection as was clearly evidenced by the degree of infection. Infected leaves of L. Avanzo were shown to have drought impaired water relations during summer as reflected by the marked decline in the relative water content (RWC). Chlorophyll fluorescence imaging revealed heterogeneity of the effect of the pathogen in the leaves, and areas with pustules showed low maximum quantum yield (Fv/Fm) and PSII quantum yield (?PSII) values, indicative of strong photoinhibition. In L. Avanzo, with a greater pustule density, rust provoked a decline in whole leaf photochemistry as indicated by Fv/Fm and photochemical reflectance index (PRI) results. Leaf structural parameters were not affected by the disease but results in L. Avanzo and Lux showed higher leaf mass per area (LMA) and higher leaf density (D) indicating an adaptation to increasing summer drought. In all clones, the effect of the pathogen was reflected in lower leaf chlorophyll content.Canadian Center of Science and Education2014info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/199981Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: https://doi.org/10.5539/jps.v3n2p1Journal of Plant Studies, 2014, vol. 3, num. 2, p. 1-12https://doi.org/10.5539/jps.v3n2p1cc-by (c) Elena Jiménez, Georgina et al., 2014https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1999812026-05-27T06:46:51Z
dc.title.none.fl_str_mv Susceptibility to Melampsora leaf rust of poplar clones from diverse genetic backgrounds: effects on photochemistry and water relations
title Susceptibility to Melampsora leaf rust of poplar clones from diverse genetic backgrounds: effects on photochemistry and water relations
spellingShingle Susceptibility to Melampsora leaf rust of poplar clones from diverse genetic backgrounds: effects on photochemistry and water relations
Elena Jiménez, Georgina
Clorofil·la
Plantacions
Basidiomicets
Chlorophyll
Plantations
Basidiomycetes
title_short Susceptibility to Melampsora leaf rust of poplar clones from diverse genetic backgrounds: effects on photochemistry and water relations
title_full Susceptibility to Melampsora leaf rust of poplar clones from diverse genetic backgrounds: effects on photochemistry and water relations
title_fullStr Susceptibility to Melampsora leaf rust of poplar clones from diverse genetic backgrounds: effects on photochemistry and water relations
title_full_unstemmed Susceptibility to Melampsora leaf rust of poplar clones from diverse genetic backgrounds: effects on photochemistry and water relations
title_sort Susceptibility to Melampsora leaf rust of poplar clones from diverse genetic backgrounds: effects on photochemistry and water relations
dc.creator.none.fl_str_mv Elena Jiménez, Georgina
Fernàndez Martínez, Jordi
Zacchini, Massimo
Moret, Assumpció
Fleck, Isabel
author Elena Jiménez, Georgina
author_facet Elena Jiménez, Georgina
Fernàndez Martínez, Jordi
Zacchini, Massimo
Moret, Assumpció
Fleck, Isabel
author_role author
author2 Fernàndez Martínez, Jordi
Zacchini, Massimo
Moret, Assumpció
Fleck, Isabel
author2_role author
author
author
author
dc.subject.none.fl_str_mv Clorofil·la
Plantacions
Basidiomicets
Chlorophyll
Plantations
Basidiomycetes
topic Clorofil·la
Plantacions
Basidiomicets
Chlorophyll
Plantations
Basidiomycetes
description The selection of resistant genotypes is the most appropriate approach in the prevention of the reduction of biomass and mortality caused by rust infection in poplar plantations. Thus, it is pertinent that we improve our understanding of the consequences that this fungal disease has on leaf physiology. Here, we studied the susceptibility to Melampsora rust in three different poplar clones of commercial interest: Lux clone - Populus deltoides Batr. (cottonwood) and Luisa Avanzo and Adige clones - both Populus × canadensis Mönch. The most susceptible clone to the infection was L. Avanzo whereas Lux and especially Adige were only slightly affected. The propagation of the disease was very rapid in L. Avanzo; their leaves showed a high incidence and severity of the disease in early and advanced stages of infection as was clearly evidenced by the degree of infection. Infected leaves of L. Avanzo were shown to have drought impaired water relations during summer as reflected by the marked decline in the relative water content (RWC). Chlorophyll fluorescence imaging revealed heterogeneity of the effect of the pathogen in the leaves, and areas with pustules showed low maximum quantum yield (Fv/Fm) and PSII quantum yield (?PSII) values, indicative of strong photoinhibition. In L. Avanzo, with a greater pustule density, rust provoked a decline in whole leaf photochemistry as indicated by Fv/Fm and photochemical reflectance index (PRI) results. Leaf structural parameters were not affected by the disease but results in L. Avanzo and Lux showed higher leaf mass per area (LMA) and higher leaf density (D) indicating an adaptation to increasing summer drought. In all clones, the effect of the pathogen was reflected in lower leaf chlorophyll content.
publishDate 2014
dc.date.none.fl_str_mv 2014
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/199981
url https://hdl.handle.net/2445/199981
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.5539/jps.v3n2p1
Journal of Plant Studies, 2014, vol. 3, num. 2, p. 1-12
https://doi.org/10.5539/jps.v3n2p1
dc.rights.none.fl_str_mv cc-by (c) Elena Jiménez, Georgina et al., 2014
https://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by (c) Elena Jiménez, Georgina et al., 2014
https://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Canadian Center of Science and Education
publisher.none.fl_str_mv Canadian Center of Science and Education
dc.source.none.fl_str_mv Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869424872938012672
score 15,300724

Similares en LA Referencia