Transcriptome analysis of intraspecific competition in Arabidopsis thaliana reveals organ-specific signatures related to nutrient acquisition and general stress response pathways.

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Ressource 1Télécharger: BIB_EF00A1733924.P001.pdf (787.30 [Ko])
Etat: Serval
Version: Final published version
ID Serval
serval:BIB_EF00A1733924
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Transcriptome analysis of intraspecific competition in Arabidopsis thaliana reveals organ-specific signatures related to nutrient acquisition and general stress response pathways.
Périodique
BMC Plant Biology
Auteur(s)
Masclaux F.G., Bruessow F., Schweizer F., Gouhier-Darimont C., Keller L., Reymond P.
ISSN
1471-2229 (Electronic)
ISSN-L
1471-2229
Statut éditorial
Publié
Date de publication
2012
Volume
12
Pages
227
Langue
anglais
Résumé
ABSTRACT:
BACKGROUND: Plants are sessile and therefore have to perceive and adjust to changes in their environment. The presence of neighbours leads to a competitive situation where resources and space will be limited. Complex adaptive responses to such situation are poorly understood at the molecular level.
RESULTS: Using microarrays, we analysed whole-genome expression changes in Arabidopsis thaliana plants subjected to intraspecific competition. The leaf and root transcriptome was strongly altered by competition. Differentially expressed genes were enriched in genes involved in nutrient deficiency (mainly N, P, K), perception of light quality, and responses to abiotic and biotic stresses. Interestingly, performance of the generalist insect Spodoptera littoralis on densely grown plants was significantly reduced, suggesting that plants under competition display enhanced resistance to herbivory.
CONCLUSIONS: This study provides a comprehensive list of genes whose expression is affected by intraspecific competition in Arabidopsis. The outcome is a unique response that involves genes related to light, nutrient deficiency, abiotic stress, and defence responses.
Mots-clé
Arabidopsis thaliana, Gene expression, Intraspecific competition, Herbivory, Abiotic stress, Biotic stress
Pubmed
Web of science
Open Access
Oui
Création de la notice
07/01/2013 13:13
Dernière modification de la notice
09/05/2019 3:11
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