Balancing the risks of hydraulic failure and carbon starvation: a twig scale analysis in declining Scots pine.
Identifieur interne : 003118 ( Main/Exploration ); précédent : 003117; suivant : 003119Balancing the risks of hydraulic failure and carbon starvation: a twig scale analysis in declining Scots pine.
Auteurs : Yann Salmon [Royaume-Uni] ; José M. Torres-Ruiz [France] ; Rafael Poyatos [Espagne] ; Jordi Martinez-Vilalta [Espagne] ; Patrick Meir [Royaume-Uni] ; Hervé Cochard [France] ; Maurizio Mencuccini [Royaume-Uni]Source :
- Plant, cell & environment [ 1365-3040 ] ; 2015.
Descripteurs français
- KwdFr :
- MESH :
- croissance et développement : Feuilles de plante, Pinus sylvestris.
- métabolisme : Carbone.
- physiologie : Eau, Feuilles de plante, Photosynthèse, Pinus sylvestris.
- Arbres, Glucides, Saisons, Sécheresses.
English descriptors
- KwdEn :
- MESH :
- chemical , metabolism : Carbon.
- chemical , physiology : Water.
- chemical : Carbohydrates.
- growth & development : Pinus sylvestris, Plant Leaves.
- physiology : Photosynthesis, Pinus sylvestris, Plant Leaves.
- Droughts, Seasons, Trees.
Abstract
Understanding physiological processes involved in drought-induced mortality is important for predicting the future of forests and for modelling the carbon and water cycles. Recent research has highlighted the variable risks of carbon starvation and hydraulic failure in drought-exposed trees. However, little is known about the specific responses of leaves and supporting twigs, despite their critical role in balancing carbon acquisition and water loss. Comparing healthy (non-defoliated) and unhealthy (defoliated) Scots pine at the same site, we measured the physiological variables involved in regulating carbon and water resources. Defoliated trees showed different responses to summer drought compared with non-defoliated trees. Defoliated trees maintained gas exchange while non-defoliated trees reduced photosynthesis and transpiration during the drought period. At the branch scale, very few differences were observed in non-structural carbohydrate concentrations between health classes. However, defoliated trees tended to have lower water potentials and smaller hydraulic safety margins. While non-defoliated trees showed a typical response to drought for an isohydric species, the physiology appears to be driven in defoliated trees by the need to maintain carbon resources in twigs. These responses put defoliated trees at higher risk of branch hydraulic failure and help explain the interaction between carbon starvation and hydraulic failure in dying trees.
DOI: 10.1111/pce.12572
PubMed: 25997464
Affiliations:
- Espagne, France, Royaume-Uni
- Aquitaine, Catalogne, Nouvelle-Aquitaine, Écosse
- Barcelone, Bordeaux, Édimbourg
- Université d'Édimbourg, Université de Bordeaux
Links toward previous steps (curation, corpus...)
- to stream PubMed, to step Corpus: 002629
- to stream PubMed, to step Curation: 002560
- to stream PubMed, to step Checkpoint: 002560
- to stream Ncbi, to step Merge: 002605
- to stream Ncbi, to step Curation: 002605
- to stream Ncbi, to step Checkpoint: 002605
- to stream Main, to step Merge: 003119
- to stream Main, to step Curation: 003118
Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Balancing the risks of hydraulic failure and carbon starvation: a twig scale analysis in declining Scots pine.</title><author><name sortKey="Salmon, Yann" sort="Salmon, Yann" uniqKey="Salmon Y" first="Yann" last="Salmon">Yann Salmon</name><affiliation wicri:level="4"><nlm:affiliation>School of Geosciences, University of Edinburgh, Edinburgh, EH93JN, UK.</nlm:affiliation><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>School of Geosciences, University of Edinburgh, Edinburgh, EH93JN</wicri:regionArea><orgName type="university">Université d'Édimbourg</orgName><placeName><settlement type="city">Édimbourg</settlement><region type="country">Écosse</region></placeName></affiliation></author><author><name sortKey="Torres Ruiz, Jose M" sort="Torres Ruiz, Jose M" uniqKey="Torres Ruiz J" first="José M" last="Torres-Ruiz">José M. Torres-Ruiz</name><affiliation wicri:level="4"><nlm:affiliation>BIOGECO, UMR 1202, Université de Bordeaux, F-33615, Pessac, France.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>BIOGECO, UMR 1202, Université de Bordeaux, F-33615, Pessac</wicri:regionArea><wicri:noRegion>33615, Pessac</wicri:noRegion><orgName type="university">Université de Bordeaux</orgName><placeName><settlement type="city">Bordeaux</settlement><region type="region" nuts="2">Nouvelle-Aquitaine</region><region type="old region" nuts="2">Aquitaine</region></placeName></affiliation></author><author><name sortKey="Poyatos, Rafael" sort="Poyatos, Rafael" uniqKey="Poyatos R" first="Rafael" last="Poyatos">Rafael Poyatos</name><affiliation wicri:level="3"><nlm:affiliation>Campus de UAB, CREAF, 08193, Barcelona, Spain.</nlm:affiliation><country xml:lang="fr">Espagne</country><wicri:regionArea>Campus de UAB, CREAF, 08193, Barcelona</wicri:regionArea><placeName><settlement type="city">Barcelone</settlement><region nuts="2" type="region">Catalogne</region></placeName></affiliation></author><author><name sortKey="Martinez Vilalta, Jordi" sort="Martinez Vilalta, Jordi" uniqKey="Martinez Vilalta J" first="Jordi" last="Martinez-Vilalta">Jordi Martinez-Vilalta</name><affiliation wicri:level="3"><nlm:affiliation>Campus de UAB, CREAF, 08193, Barcelona, Spain.</nlm:affiliation><country xml:lang="fr">Espagne</country><wicri:regionArea>Campus de UAB, CREAF, 08193, Barcelona</wicri:regionArea><placeName><settlement type="city">Barcelone</settlement><region nuts="2" type="region">Catalogne</region></placeName></affiliation></author><author><name sortKey="Meir, Patrick" sort="Meir, Patrick" uniqKey="Meir P" first="Patrick" last="Meir">Patrick Meir</name><affiliation wicri:level="4"><nlm:affiliation>School of Geosciences, University of Edinburgh, Edinburgh, EH93JN, UK.</nlm:affiliation><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>School of Geosciences, University of Edinburgh, Edinburgh, EH93JN</wicri:regionArea><orgName type="university">Université d'Édimbourg</orgName><placeName><settlement type="city">Édimbourg</settlement><region type="country">Écosse</region></placeName></affiliation></author><author><name sortKey="Cochard, Herve" sort="Cochard, Herve" uniqKey="Cochard H" first="Hervé" last="Cochard">Hervé Cochard</name><affiliation wicri:level="1"><nlm:affiliation>INRA, UMR547 PIAF, Clermont Université, F-63100, Clermont-Ferrand, France.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>INRA, UMR547 PIAF, Clermont Université, F-63100, Clermont-Ferrand</wicri:regionArea><wicri:noRegion>63100, Clermont-Ferrand</wicri:noRegion><wicri:noRegion>63100, Clermont-Ferrand</wicri:noRegion></affiliation></author><author><name sortKey="Mencuccini, Maurizio" sort="Mencuccini, Maurizio" uniqKey="Mencuccini M" first="Maurizio" last="Mencuccini">Maurizio Mencuccini</name><affiliation wicri:level="4"><nlm:affiliation>School of Geosciences, University of Edinburgh, Edinburgh, EH93JN, UK.</nlm:affiliation><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>School of Geosciences, University of Edinburgh, Edinburgh, EH93JN</wicri:regionArea><orgName type="university">Université d'Édimbourg</orgName><placeName><settlement type="city">Édimbourg</settlement><region type="country">Écosse</region></placeName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2015">2015</date><idno type="RBID">pubmed:25997464</idno><idno type="pmid">25997464</idno><idno type="doi">10.1111/pce.12572</idno><idno type="wicri:Area/PubMed/Corpus">002629</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">002629</idno><idno type="wicri:Area/PubMed/Curation">002560</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Curation">002560</idno><idno type="wicri:Area/PubMed/Checkpoint">002560</idno><idno type="wicri:explorRef" wicri:stream="Checkpoint" wicri:step="PubMed">002560</idno><idno type="wicri:Area/Ncbi/Merge">002605</idno><idno type="wicri:Area/Ncbi/Curation">002605</idno><idno type="wicri:Area/Ncbi/Checkpoint">002605</idno><idno type="wicri:Area/Main/Merge">003119</idno><idno type="wicri:Area/Main/Curation">003118</idno><idno type="wicri:Area/Main/Exploration">003118</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Balancing the risks of hydraulic failure and carbon starvation: a twig scale analysis in declining Scots pine.</title><author><name sortKey="Salmon, Yann" sort="Salmon, Yann" uniqKey="Salmon Y" first="Yann" last="Salmon">Yann Salmon</name><affiliation wicri:level="4"><nlm:affiliation>School of Geosciences, University of Edinburgh, Edinburgh, EH93JN, UK.</nlm:affiliation><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>School of Geosciences, University of Edinburgh, Edinburgh, EH93JN</wicri:regionArea><orgName type="university">Université d'Édimbourg</orgName><placeName><settlement type="city">Édimbourg</settlement><region type="country">Écosse</region></placeName></affiliation></author><author><name sortKey="Torres Ruiz, Jose M" sort="Torres Ruiz, Jose M" uniqKey="Torres Ruiz J" first="José M" last="Torres-Ruiz">José M. Torres-Ruiz</name><affiliation wicri:level="4"><nlm:affiliation>BIOGECO, UMR 1202, Université de Bordeaux, F-33615, Pessac, France.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>BIOGECO, UMR 1202, Université de Bordeaux, F-33615, Pessac</wicri:regionArea><wicri:noRegion>33615, Pessac</wicri:noRegion><orgName type="university">Université de Bordeaux</orgName><placeName><settlement type="city">Bordeaux</settlement><region type="region" nuts="2">Nouvelle-Aquitaine</region><region type="old region" nuts="2">Aquitaine</region></placeName></affiliation></author><author><name sortKey="Poyatos, Rafael" sort="Poyatos, Rafael" uniqKey="Poyatos R" first="Rafael" last="Poyatos">Rafael Poyatos</name><affiliation wicri:level="3"><nlm:affiliation>Campus de UAB, CREAF, 08193, Barcelona, Spain.</nlm:affiliation><country xml:lang="fr">Espagne</country><wicri:regionArea>Campus de UAB, CREAF, 08193, Barcelona</wicri:regionArea><placeName><settlement type="city">Barcelone</settlement><region nuts="2" type="region">Catalogne</region></placeName></affiliation></author><author><name sortKey="Martinez Vilalta, Jordi" sort="Martinez Vilalta, Jordi" uniqKey="Martinez Vilalta J" first="Jordi" last="Martinez-Vilalta">Jordi Martinez-Vilalta</name><affiliation wicri:level="3"><nlm:affiliation>Campus de UAB, CREAF, 08193, Barcelona, Spain.</nlm:affiliation><country xml:lang="fr">Espagne</country><wicri:regionArea>Campus de UAB, CREAF, 08193, Barcelona</wicri:regionArea><placeName><settlement type="city">Barcelone</settlement><region nuts="2" type="region">Catalogne</region></placeName></affiliation></author><author><name sortKey="Meir, Patrick" sort="Meir, Patrick" uniqKey="Meir P" first="Patrick" last="Meir">Patrick Meir</name><affiliation wicri:level="4"><nlm:affiliation>School of Geosciences, University of Edinburgh, Edinburgh, EH93JN, UK.</nlm:affiliation><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>School of Geosciences, University of Edinburgh, Edinburgh, EH93JN</wicri:regionArea><orgName type="university">Université d'Édimbourg</orgName><placeName><settlement type="city">Édimbourg</settlement><region type="country">Écosse</region></placeName></affiliation></author><author><name sortKey="Cochard, Herve" sort="Cochard, Herve" uniqKey="Cochard H" first="Hervé" last="Cochard">Hervé Cochard</name><affiliation wicri:level="1"><nlm:affiliation>INRA, UMR547 PIAF, Clermont Université, F-63100, Clermont-Ferrand, France.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>INRA, UMR547 PIAF, Clermont Université, F-63100, Clermont-Ferrand</wicri:regionArea><wicri:noRegion>63100, Clermont-Ferrand</wicri:noRegion><wicri:noRegion>63100, Clermont-Ferrand</wicri:noRegion></affiliation></author><author><name sortKey="Mencuccini, Maurizio" sort="Mencuccini, Maurizio" uniqKey="Mencuccini M" first="Maurizio" last="Mencuccini">Maurizio Mencuccini</name><affiliation wicri:level="4"><nlm:affiliation>School of Geosciences, University of Edinburgh, Edinburgh, EH93JN, UK.</nlm:affiliation><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>School of Geosciences, University of Edinburgh, Edinburgh, EH93JN</wicri:regionArea><orgName type="university">Université d'Édimbourg</orgName><placeName><settlement type="city">Édimbourg</settlement><region type="country">Écosse</region></placeName></affiliation></author></analytic><series><title level="j">Plant, cell & environment</title><idno type="eISSN">1365-3040</idno><imprint><date when="2015" type="published">2015</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Carbohydrates</term><term>Carbon (metabolism)</term><term>Droughts</term><term>Photosynthesis (physiology)</term><term>Pinus sylvestris (growth & development)</term><term>Pinus sylvestris (physiology)</term><term>Plant Leaves (growth & development)</term><term>Plant Leaves (physiology)</term><term>Seasons</term><term>Trees</term><term>Water (physiology)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Arbres</term><term>Carbone (métabolisme)</term><term>Eau (physiologie)</term><term>Feuilles de plante (croissance et développement)</term><term>Feuilles de plante (physiologie)</term><term>Glucides</term><term>Photosynthèse (physiologie)</term><term>Pinus sylvestris (croissance et développement)</term><term>Pinus sylvestris (physiologie)</term><term>Saisons</term><term>Sécheresses</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Carbon</term></keywords><keywords scheme="MESH" type="chemical" qualifier="physiology" xml:lang="en"><term>Water</term></keywords><keywords scheme="MESH" type="chemical" xml:lang="en"><term>Carbohydrates</term></keywords><keywords scheme="MESH" qualifier="croissance et développement" xml:lang="fr"><term>Feuilles de plante</term><term>Pinus sylvestris</term></keywords><keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Pinus sylvestris</term><term>Plant Leaves</term></keywords><keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Carbone</term></keywords><keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Eau</term><term>Feuilles de plante</term><term>Photosynthèse</term><term>Pinus sylvestris</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Photosynthesis</term><term>Pinus sylvestris</term><term>Plant Leaves</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Droughts</term><term>Seasons</term><term>Trees</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Arbres</term><term>Glucides</term><term>Saisons</term><term>Sécheresses</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Understanding physiological processes involved in drought-induced mortality is important for predicting the future of forests and for modelling the carbon and water cycles. Recent research has highlighted the variable risks of carbon starvation and hydraulic failure in drought-exposed trees. However, little is known about the specific responses of leaves and supporting twigs, despite their critical role in balancing carbon acquisition and water loss. Comparing healthy (non-defoliated) and unhealthy (defoliated) Scots pine at the same site, we measured the physiological variables involved in regulating carbon and water resources. Defoliated trees showed different responses to summer drought compared with non-defoliated trees. Defoliated trees maintained gas exchange while non-defoliated trees reduced photosynthesis and transpiration during the drought period. At the branch scale, very few differences were observed in non-structural carbohydrate concentrations between health classes. However, defoliated trees tended to have lower water potentials and smaller hydraulic safety margins. While non-defoliated trees showed a typical response to drought for an isohydric species, the physiology appears to be driven in defoliated trees by the need to maintain carbon resources in twigs. These responses put defoliated trees at higher risk of branch hydraulic failure and help explain the interaction between carbon starvation and hydraulic failure in dying trees.</div></front></TEI><affiliations><list><country><li>Espagne</li><li>France</li><li>Royaume-Uni</li></country><region><li>Aquitaine</li><li>Catalogne</li><li>Nouvelle-Aquitaine</li><li>Écosse</li></region><settlement><li>Barcelone</li><li>Bordeaux</li><li>Édimbourg</li></settlement><orgName><li>Université d'Édimbourg</li><li>Université de Bordeaux</li></orgName></list><tree><country name="Royaume-Uni"><region name="Écosse"><name sortKey="Salmon, Yann" sort="Salmon, Yann" uniqKey="Salmon Y" first="Yann" last="Salmon">Yann Salmon</name></region><name sortKey="Meir, Patrick" sort="Meir, Patrick" uniqKey="Meir P" first="Patrick" last="Meir">Patrick Meir</name><name sortKey="Mencuccini, Maurizio" sort="Mencuccini, Maurizio" uniqKey="Mencuccini M" first="Maurizio" last="Mencuccini">Maurizio Mencuccini</name></country><country name="France"><region name="Nouvelle-Aquitaine"><name sortKey="Torres Ruiz, Jose M" sort="Torres Ruiz, Jose M" uniqKey="Torres Ruiz J" first="José M" last="Torres-Ruiz">José M. Torres-Ruiz</name></region><name sortKey="Cochard, Herve" sort="Cochard, Herve" uniqKey="Cochard H" first="Hervé" last="Cochard">Hervé Cochard</name></country><country name="Espagne"><region name="Catalogne"><name sortKey="Poyatos, Rafael" sort="Poyatos, Rafael" uniqKey="Poyatos R" first="Rafael" last="Poyatos">Rafael Poyatos</name></region><name sortKey="Martinez Vilalta, Jordi" sort="Martinez Vilalta, Jordi" uniqKey="Martinez Vilalta J" first="Jordi" last="Martinez-Vilalta">Jordi Martinez-Vilalta</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Asie/explor/AustralieFrV1/Data/Main/Exploration
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 003118 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 003118 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Asie
|area= AustralieFrV1
|flux= Main
|étape= Exploration
|type= RBID
|clé= pubmed:25997464
|texte= Balancing the risks of hydraulic failure and carbon starvation: a twig scale analysis in declining Scots pine.
}}
Pour générer des pages wiki
HfdIndexSelect -h $EXPLOR_AREA/Data/Main/Exploration/RBID.i -Sk "pubmed:25997464" \
| HfdSelect -Kh $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd \
| NlmPubMed2Wicri -a AustralieFrV1
| This area was generated with Dilib version V0.6.33. |  |