Natural genetic variation of root system architecture from Arabidopsis to Brachypodium: towards adaptive value.

Détails

ID Serval
serval:BIB_56E784164FA2
Type
Article: article d'un périodique ou d'un magazine.
Sous-type
Synthèse (review): revue aussi complète que possible des connaissances sur un sujet, rédigée à partir de l'analyse exhaustive des travaux publiés.
Collection
Publications
Institution
Titre
Natural genetic variation of root system architecture from Arabidopsis to Brachypodium: towards adaptive value.
Périodique
Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
Auteur⸱e⸱s
Pacheco-Villalobos D., Hardtke C.S.
ISSN
1471-2970 (Electronic)
ISSN-L
0962-8436
Statut éditorial
Publié
Date de publication
2012
Volume
367
Numéro
1595
Pages
1552-1558
Langue
anglais
Résumé
Root system architecture is a trait that displays considerable plasticity because of its sensitivity to environmental stimuli. Nevertheless, to a significant degree it is genetically constrained as suggested by surveys of its natural genetic variation. A few regulators of root system architecture have been isolated as quantitative trait loci through the natural variation approach in the dicotyledon model, Arabidopsis. This provides proof of principle that allelic variation for root system architecture traits exists, is genetically tractable, and might be exploited for crop breeding. Beyond Arabidopsis, Brachypodium could serve as both a credible and experimentally accessible model for root system architecture variation in monocotyledons, as suggested by first glimpses of the different root morphologies of Brachypodium accessions. Whether a direct knowledge transfer gained from molecular model system studies will work in practice remains unclear however, because of a lack of comprehensive understanding of root system physiology in the native context. For instance, apart from a few notable exceptions, the adaptive value of genetic variation in root system modulators is unknown. Future studies should thus aim at comprehensive characterization of the role of genetic players in root system architecture variation by taking into account the native environmental conditions, in particular soil characteristics.
Mots-clé
Adaptation, Physiological, Alleles, Arabidopsis/genetics, Arabidopsis/growth & development, Brachypodium/genetics, Brachypodium/growth & development, Gene-Environment Interaction, Genes, Plant, Genetic Variation, Phloem/growth & development, Phloem/physiology, Plant Cells/physiology, Plant Roots/genetics, Plant Roots/growth & development, Quantitative Trait Loci, Soil, Species Specificity, Xylem/growth & development, Xylem/physiology
Pubmed
Web of science
Open Access
Oui
Création de la notice
23/06/2012 6:58
Dernière modification de la notice
20/08/2019 15:11
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