Mazars Christian, Bourque Stéphane, Mithöfer Axel, Pugin Alain, Ranjeva Raoul
UMR CNRS 5546/Université de Toulouse, Surfaces Cellulaires et Signalisation chez les Végétaux, Pôle de Biotechnologie Végétale, BP 42617 Auzeville, 31326 Castanet-Tolosan cédex, France;UMR INRA 1088/CNRS 5184/Université de Bourgogne Plante-Microbe-Environnement, 17 Rue Sully, BP 86510, 21065 Dijon cédex, France;Max Planck Institute for Chemical Ecology, Department Bioorganic Chemistry, Hans-Knöll-Str. 8, 07745 Jena, Germany;GDR CNRS Calcium et Régulation des Gènes, 118 route de Narbonne, 31062 Toulouse cédex, France.
New Phytol. 2009 Jan;181(2):261-274. doi: 10.1111/j.1469-8137.2008.02680.x.
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.
在植物细胞中，基于钙的信号通路参与了大量生物过程，包括细胞分裂、极性、生长、发育以及对不断变化的生物和非生物环境条件的适应。已知游离钙的变化以非刻板的方式进行，并产生特定的信号特征，该特征反映了刺激的性质、强度和频率。钙信号特征的时间方面已有充分记录，但其矢量方面也对生物输出有着深远影响。在这里，我们将重点关注细胞核中钙稳态的调节。我们将讨论相关数据并提出假设，表明在与其他细胞器相互作用时，细胞核有潜力自行产生和调节钙信号。
