发布: 2017年12月20日第7卷第24期 DOI: 10.21769/BioProtoc.2653 浏览次数: 8787
评审: Marisa RosaAna Espinosa-RuizRenate WeizbauerAnonymous reviewer(s)
Abstract
The opening of stomata in plants in response to blue light is driven by the plasma membrane H+-ATPase in guard cells. To evaluate the activation of the H+-ATPase in vivo, we can use H+-pumping by guard cells in response to blue light and fusicoccin. To do this, it is required to prepare a large amount of guard cell protoplasts and measure H+-pumping in the protoplasts. It is also necessary to determine the protein amount of H+-ATPase. In this protocol, we describe the procedures required for these preparations and measurements.
Keywords: Arabidopsis thaliana (拟南芥)Background
The opening of stomata in response to blue light is driven by membrane hyperpolarization mediated through H+-pumping across the plasma membrane in guard cells (Assmann et al., 1985; Shimazaki et al., 1986), and is brought about by the plasma membrane H+-ATPase (Kinoshita and Shimazaki, 1999). The H+-ATPase generates an electrochemical gradient across the membrane, and provides the energy required for numerous secondary transports in plant cells. However, it is not easy to measure the activity of H+-ATPase in vivo. Taking advantage of the blue light-sensitive properties of guard cells, our method makes it possible to measure H+-pumping as an in vivo H+-ATPase activity using Arabidopsis guard cell protoplasts (Ueno et al., 2005). Together with H+-ATPase quantification by Western blot (Yamauchi et al., 2016), this method allows comparing H+-ATPase activity under different conditions or mutant backgrounds.
Materials and Reagents
Equipment
*Note: This product has been discontinued.
Software
Procedure
文章信息
版权信息
© 2017 The Authors; exclusive licensee Bio-protocol LLC.
如何引用
Readers should cite both the Bio-protocol article and the original research article where this protocol was used:
分类
植物科学 > 植物细胞生物学 > 细胞染色
植物科学 > 植物生物化学 > 蛋白质
细胞生物学 > 细胞成像 > 活细胞成像
您对这篇实验方法有问题吗?
在此处发布您的问题,我们将邀请本文作者来回答。同时,我们会将您的问题发布到Bio-protocol Exchange,以便寻求社区成员的帮助。
提问指南
+ 问题描述
写下详细的问题描述,包括所有有助于他人回答您问题的信息(例如实验过程、条件和相关图像等)。
Share
Bluesky
X
Copy link