Calcium homeostasis in plant cell nuclei
2009
Mazars, Christian | Bourque, Stephane | Mithöfer, Axel | Ranjeva, Raoul | Université Toulouse III - Paul Sabatier (UT3) ; Université de Toulouse (UT) | Centre National de la Recherche Scientifique (CNRS) | Plante - microbe - environnement : biochimie, biologie cellulaire et écologie (PMEBBCE) ; Etablissement National d'Enseignement Supérieur Agronomique de Dijon (ENESAD)-Institut National de la Recherche Agronomique (INRA)-Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS) | Max Planck Institute for Chemical Ecology ; Max-Planck-Gesellschaft
International audience
Afficher plus [+] Moins [-]anglais. In plant cells, calcium-based signaling pathways are involved in a large array of biological processes, including cell division, polarity, growth, development and adaptation to changing biotic and abiotic environmental conditions. Free calcium changes are known to proceed in a nonstereotypical manner and produce a specific signature, which mirrors the nature, strength and frequency of a stimulus. The temporal aspects of calcium signatures are well documented, but their vectorial aspects also have a profound influence on biological output. Here, we will focus on the regulation of calcium homeostasis in the nucleus. We will discuss data and present hypotheses suggesting that, while interacting with other organelles, the nucleus has the potential to generate and regulate calcium signals on its own.
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