Department of Biology, Faculty of Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan.
Department of Biology, Faculty of Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
J Exp Bot. 2014 Jun;65(11):2873-81. doi: 10.1093/jxb/ert414. Epub 2013 Dec 13.
Organelle movement and positioning are essential for proper cellular function. A nucleus moves dynamically during cell division and differentiation and in response to environmental changes in animal, fungal, and plant cells. Nuclear movement is well-studied and the mechanisms have been mostly elucidated in animal and fungal cells, but not in plant cells. In prothallial cells of the fern Adiantum capillus-veneris and leaf cells of the flowering plant Arabidopsis thaliana, light induces nuclear movement and nuclei change their position according to wavelength, intensity, and direction of light. This nuclear photorelocation movement shows some common features with the photorelocation movement of chloroplasts, which is one of the best-characterized plant organelle movements. This review summarizes nuclear movement and positioning in plant cells, especially plant-specific nuclear photorelocation movement and discusses the relationship between nuclear photorelocation movement and chloroplast photorelocation movement.
细胞器的运动和定位对于细胞的正常功能至关重要。在动物、真菌和植物细胞中，细胞核在细胞分裂和分化过程中以及对环境变化的响应中会发生动态运动。细胞核的运动已经得到了很好的研究，其机制在动物和真菌细胞中已经大部分阐明，但在植物细胞中还没有。在蕨类植物铁线蕨的原叶体细胞和开花植物拟南芥的叶细胞中，光会诱导细胞核运动，并且细胞核会根据光的波长、强度和方向改变位置。这种核光定位运动与叶绿体的光定位运动具有一些共同的特征，叶绿体的光定位运动是研究得最好的植物细胞器运动之一。本文综述了植物细胞中的核运动和定位，特别是植物特有的核光定位运动，并讨论了核光定位运动与叶绿体光定位运动之间的关系。
