Centro de Biotecnologia y Genomica de Plantas, Universidad Politécnica de Madrid, Madrid, Spain.
FEBS J. 2011 Nov;278(22):4293-303. doi: 10.1111/j.1742-4658.2011.08371.x. Epub 2011 Oct 20.
Potassium (K(+) ) is the most abundant inorganic cation in plant cells. Unlike animals, plants lack sodium/potassium exchangers. Instead, plant cells have developed unique transport systems for K(+) accumulation and release. An essential role in potassium uptake and efflux is played by potassium channels. Since the first molecular characterization of K(+) channels from Arabidopsis thaliana in 1992, a large number of studies on plant potassium channels have been conducted. Potassium channels are considered to be one of the best characterized class of membrane proteins in plants. Nevertheless, knowledge on plant potassium channels is still incomplete. This minireview focuses on recent developments in the research of potassium transport in plants with a strong focus on voltage-gated potassium channels.
钾（K(+) ）是植物细胞中含量最丰富的无机阳离子。与动物不同，植物缺乏钠/钾交换器。相反，植物细胞已经开发出独特的运输系统来积累和释放 K(+)。钾通道在钾的摄取和流出中起着重要作用。自 1992 年从拟南芥中首次对 K(+) 通道进行分子鉴定以来，对植物钾通道的大量研究已经开展。钾通道被认为是植物中膜蛋白中特征性最好的一类。然而，关于植物钾通道的知识仍然不完整。本篇综述重点关注植物钾转运研究的最新进展，特别关注电压门控钾通道。
