Interaction of drought- and pathogen-induced mortality in Norway spruce and scots pine

Pathogenic diseases frequently occur in drought-stressed trees. However, their contribution to the process of drought-induced mortality is poorly understood. We combined drought and stem inoculation treatments to study the physiological processes leading to drought-induced mortality in Norway spruce...

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Autores: Gómez‐Gallego, Mireia, Galiano, Lucia, Martínez-Vilalta, Jordi, Stenlid, Jan, Capador-Barreto, Hernan D., Elfstrand, Malin, Camarero Martínez, Jesús Julio, Oliva Palau, Jonàs
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2022
País:España
Institución:Universitat de Lleida (UdL)
Repositorio:Repositori Obert UdL
OAI Identifier:oai:repositori.udl.cat:10459.1/83499
Acceso en línea:https://doi.org/10.1111/pce.14360
http://hdl.handle.net/10459.1/83499
Access Level:acceso abierto
Palabra clave:Carbon starvation
Conifer
Drought-induced tree death
Hydraulic failure
Necrotrophic pathogen
Sapwood
Circuits hidràulics
Coníferes
Carboni
Microorganismes patògens
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spelling Interaction of drought- and pathogen-induced mortality in Norway spruce and scots pineGómez‐Gallego, MireiaGaliano, LuciaMartínez-Vilalta, JordiStenlid, JanCapador-Barreto, Hernan D.Elfstrand, MalinCamarero Martínez, Jesús JulioOliva Palau, JonàsCarbon starvationConiferDrought-induced tree deathHydraulic failureNecrotrophic pathogenSapwoodCircuits hidràulicsConíferesCarboniMicroorganismes patògensPathogenic diseases frequently occur in drought-stressed trees. However, their contribution to the process of drought-induced mortality is poorly understood. We combined drought and stem inoculation treatments to study the physiological processes leading to drought-induced mortality in Norway spruce (Picea abies) and Scots pine (Pinus sylvestris) saplings infected with Heterobasidion annosum s.s. We analysed the saplings' water status, gas exchange, nonstructural carbohydrates (NSCs) and defence responses, and how they related to mortality. Saplings were followed for two growing seasons, including an artificially induced 3-month dormancy period. The combined drought and pathogen treatment significantly increased spruce mortality; however, no interaction between these stressors was observed in pine, although individually each stressor caused mortality. Our results suggest that pathogen infection decreased carbon reserves in spruce, reducing the capacity of saplings to cope with drought, resulting in increased mortality rates. Defoliation, relative water content and the starch concentration of needles were predictors of mortality in both species under drought and pathogen infection. Infection and drought stress create conflicting needs for carbon to compartmentalize the pathogen and to avoid turgor loss, respectively. Heterobasidion annosum reduces the functional sapwood area and shifts NSC allocation patterns, reducing the capacity of trees to cope with drought.Ministry of Science and Education of Spain; Svenska Forskningsradet FormasWILEY2022info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttps://doi.org/10.1111/pce.14360http://hdl.handle.net/10459.1/83499reponame:Repositori Obert UdL instname:Universitat de Lleida (UdL)InglésReproducció del document publicat a https://doi.org/10.1111/pce.14360Plant cell and environment, 2022, p.1-14cc-by (c) Gómez et al., 2022info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/oai:repositori.udl.cat:10459.1/834992026-06-24T12:42:17Z
dc.title.none.fl_str_mv Interaction of drought- and pathogen-induced mortality in Norway spruce and scots pine
title Interaction of drought- and pathogen-induced mortality in Norway spruce and scots pine
spellingShingle Interaction of drought- and pathogen-induced mortality in Norway spruce and scots pine
Gómez‐Gallego, Mireia
Carbon starvation
Conifer
Drought-induced tree death
Hydraulic failure
Necrotrophic pathogen
Sapwood
Circuits hidràulics
Coníferes
Carboni
Microorganismes patògens
title_short Interaction of drought- and pathogen-induced mortality in Norway spruce and scots pine
title_full Interaction of drought- and pathogen-induced mortality in Norway spruce and scots pine
title_fullStr Interaction of drought- and pathogen-induced mortality in Norway spruce and scots pine
title_full_unstemmed Interaction of drought- and pathogen-induced mortality in Norway spruce and scots pine
title_sort Interaction of drought- and pathogen-induced mortality in Norway spruce and scots pine
dc.creator.none.fl_str_mv Gómez‐Gallego, Mireia
Galiano, Lucia
Martínez-Vilalta, Jordi
Stenlid, Jan
Capador-Barreto, Hernan D.
Elfstrand, Malin
Camarero Martínez, Jesús Julio
Oliva Palau, Jonàs
author Gómez‐Gallego, Mireia
author_facet Gómez‐Gallego, Mireia
Galiano, Lucia
Martínez-Vilalta, Jordi
Stenlid, Jan
Capador-Barreto, Hernan D.
Elfstrand, Malin
Camarero Martínez, Jesús Julio
Oliva Palau, Jonàs
author_role author
author2 Galiano, Lucia
Martínez-Vilalta, Jordi
Stenlid, Jan
Capador-Barreto, Hernan D.
Elfstrand, Malin
Camarero Martínez, Jesús Julio
Oliva Palau, Jonàs
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Carbon starvation
Conifer
Drought-induced tree death
Hydraulic failure
Necrotrophic pathogen
Sapwood
Circuits hidràulics
Coníferes
Carboni
Microorganismes patògens
topic Carbon starvation
Conifer
Drought-induced tree death
Hydraulic failure
Necrotrophic pathogen
Sapwood
Circuits hidràulics
Coníferes
Carboni
Microorganismes patògens
description Pathogenic diseases frequently occur in drought-stressed trees. However, their contribution to the process of drought-induced mortality is poorly understood. We combined drought and stem inoculation treatments to study the physiological processes leading to drought-induced mortality in Norway spruce (Picea abies) and Scots pine (Pinus sylvestris) saplings infected with Heterobasidion annosum s.s. We analysed the saplings' water status, gas exchange, nonstructural carbohydrates (NSCs) and defence responses, and how they related to mortality. Saplings were followed for two growing seasons, including an artificially induced 3-month dormancy period. The combined drought and pathogen treatment significantly increased spruce mortality; however, no interaction between these stressors was observed in pine, although individually each stressor caused mortality. Our results suggest that pathogen infection decreased carbon reserves in spruce, reducing the capacity of saplings to cope with drought, resulting in increased mortality rates. Defoliation, relative water content and the starch concentration of needles were predictors of mortality in both species under drought and pathogen infection. Infection and drought stress create conflicting needs for carbon to compartmentalize the pathogen and to avoid turgor loss, respectively. Heterobasidion annosum reduces the functional sapwood area and shifts NSC allocation patterns, reducing the capacity of trees to cope with drought.
publishDate 2022
dc.date.none.fl_str_mv 2022
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://doi.org/10.1111/pce.14360
http://hdl.handle.net/10459.1/83499
url https://doi.org/10.1111/pce.14360
http://hdl.handle.net/10459.1/83499
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/10.1111/pce.14360
Plant cell and environment, 2022, p.1-14
dc.rights.none.fl_str_mv cc-by (c) Gómez et al., 2022
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
rights_invalid_str_mv cc-by (c) Gómez et al., 2022
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv WILEY
publisher.none.fl_str_mv WILEY
dc.source.none.fl_str_mv reponame:Repositori Obert UdL
instname:Universitat de Lleida (UdL)
instname_str Universitat de Lleida (UdL)
reponame_str Repositori Obert UdL
collection Repositori Obert UdL
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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