PoplarV1, Main, Exploration, bibRecord, 002774

Can elevated CO2 and ozone shift the genetic composition of aspen (Populus tremuloides) stands?

Identifieur interne : 002774 ( Main/Exploration ); précédent : 002773; suivant : 002775

Can elevated CO2 and ozone shift the genetic composition of aspen (Populus tremuloides) stands?

Auteurs : Emily V. Moran [Suisse] ; Mark E. Kubiske

Source :

The New phytologist [ 1469-8137 ] ; 2013.

RBID : pubmed:23356555

Descripteurs français

KwdFr :
- Analyse de variance (MeSH), Analyse en composantes principales (MeSH), Dioxyde de carbone (pharmacologie), Modèles biologiques (MeSH), Ozone (pharmacologie), Populus (anatomie et histologie), Populus (croissance et développement), Populus (effets des médicaments et des substances chimiques), Populus (génétique), Théorème de Bayes (MeSH).
MESH :
- anatomie et histologie : Populus.
- croissance et développement : Populus.
- effets des médicaments et des substances chimiques : Populus.
- génétique : Populus.
- pharmacologie : Dioxyde de carbone, Ozone.
- Analyse de variance, Analyse en composantes principales, Modèles biologiques, Théorème de Bayes.

English descriptors

KwdEn :
- Analysis of Variance (MeSH), Bayes Theorem (MeSH), Carbon Dioxide (pharmacology), Models, Biological (MeSH), Ozone (pharmacology), Populus (anatomy & histology), Populus (drug effects), Populus (genetics), Populus (growth & development), Principal Component Analysis (MeSH).
MESH :
- chemical , pharmacology : Carbon Dioxide, Ozone.
- anatomy & histology : Populus.
- drug effects : Populus.
- genetics : Populus.
- growth & development : Populus.
- Analysis of Variance, Bayes Theorem, Models, Biological, Principal Component Analysis.

Abstract

The world's forests are currently exposed to increasing concentrations of carbon dioxide (CO2) and ozone (O3). Both pollutants can potentially exert a selective effect on plant populations. This, in turn, may lead to changes in ecosystem properties, such as carbon sequestration. Here, we report how elevated CO2 and O3 affect the genetic composition of a woody plant population via altered survival. Using data from the Aspen free-air CO2 enrichment (FACE) experiment (in which aspen clones were grown in factorial combinations of CO2 and O3), we develop a hierarchical Bayesian model of survival. We also examine how survival differences between clones could affect pollutant responses in the next generation. Our model predicts that the relative abundance of the tested clones, given equal initial abundance, would shift under either elevated CO2 or O3 as a result of changing survival rates. Survival was strongly affected by between-clone differences in growth responses. Selection could noticeably decrease O3 sensitivity in the next generation, depending on the heritability of growth responses and the distribution of seed production. The response to selection by CO2, however, is likely to be small. Our results suggest that the changing atmospheric composition could shift the genotypic composition and average pollutant responses of tree populations over moderate timescales.

DOI: 10.1111/nph.12153
PubMed: 23356555

Affiliations:

Suisse

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Le document en format XML

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<front><div type="abstract" xml:lang="en">The world's forests are currently exposed to increasing concentrations of carbon dioxide (CO2) and ozone (O3). Both pollutants can potentially exert a selective effect on plant populations. This, in turn, may lead to changes in ecosystem properties, such as carbon sequestration. Here, we report how elevated CO2 and O3 affect the genetic composition of a woody plant population via altered survival. Using data from the Aspen free-air CO2 enrichment (FACE) experiment (in which aspen clones were grown in factorial combinations of CO2 and O3), we develop a hierarchical Bayesian model of survival. We also examine how survival differences between clones could affect pollutant responses in the next generation. Our model predicts that the relative abundance of the tested clones, given equal initial abundance, would shift under either elevated CO2 or O3 as a result of changing survival rates. Survival was strongly affected by between-clone differences in growth responses. Selection could noticeably decrease O3 sensitivity in the next generation, depending on the heritability of growth responses and the distribution of seed production. The response to selection by CO2, however, is likely to be small. Our results suggest that the changing atmospheric composition could shift the genotypic composition and average pollutant responses of tree populations over moderate timescales.</div>
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Can elevated CO2 and ozone shift the genetic composition of aspen (Populus tremuloides) stands?

Can elevated CO2 and ozone shift the genetic composition of aspen (Populus tremuloides) stands?

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki