Systems analysis of shoot apical meristem growth and development: integrating hormonal and mechanical signaling

James Murray 1 Angharad Jones 1 Christophe Godin 2, 3 Jan Traas 4
2 VIRTUAL PLANTS - Modeling plant morphogenesis at different scales, from genes to phenotype
CRISAM - Inria Sophia Antipolis - Méditerranée , INRA - Institut National de la Recherche Agronomique, Centre de coopération internationale en recherche agronomique pour le développement [CIRAD] : UMR51
Abstract : The shoot apical meristem (SAM) is a small population of stem cells that continuously generates organs and tissues. This review covers our current understanding of organ initiation by the SAM in Arabidopsis thaliana. Meristem function and maintenance involves two major hormones, cytokinins and auxins. Cytokinins appear to play a major role in meristem maintenance and in controlling meristematic properties, such as cell proliferation. Self-organizing transport processes, which are still only partially understood, lead to the patterned accumulation of auxin at particular positions, where organs will grow out. A major downstream target of auxin-mediated growth regulation is the cell wall, which is a determinant for both growth rates and growth distribution, but feedbacks with metabolism and the synthetic capacity of the cytoplasm are crucial as well. Recent work has also pointed at a potential role of mechanical signals in growth coordination, but the precise mechanisms at work remain to be elucidated.
Type de document :
Article dans une revue
The Plant cell, American Society of Plant Biologists (ASPB), 2012, 〈10.1105/tpc.112.102194〉
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https://hal.inria.fr/hal-00828849
Contributeur : Christophe Godin <>
Soumis le : vendredi 31 mai 2013 - 16:27:13
Dernière modification le : mardi 16 janvier 2018 - 16:13:14

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James Murray, Angharad Jones, Christophe Godin, Jan Traas. Systems analysis of shoot apical meristem growth and development: integrating hormonal and mechanical signaling. The Plant cell, American Society of Plant Biologists (ASPB), 2012, 〈10.1105/tpc.112.102194〉. 〈hal-00828849〉

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