Confocal laser scanning microscopy (CLSM) is widely used to monitor intracellular calcium levels in living cells loaded with calcium-sensitive fluorophores. This review examines the basic advantages and limitations of CLSM in in vivo imaging analyses of calcium dynamics. The benefits of utilizing ra
Imaging calcium dynamics in living plant cells and tissues
β Scribed by N.D. Read; P.S. Shacklock; M.R. Knight; A.J. Trewavas
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 774 KB
- Volume
- 17
- Category
- Article
- ISSN
- 1065-6995
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
The central role of Ca^2+^ signalling in plants is now well established. Much of our recent research has been based on the premise that the direct demonstration of signalβresponse coupling via Ca^2+^ requires the imaging or measurement of cytosolic free Ca^2+^ in living cells. Methods (confocal microscopy, fluorescence ratio imaging and photon counting imaging) which we use for imaging Ca^2+^ with fluorescent dyes or recombinant aequorin, are described. Approaches for using dyes are now routine for many plant cells. However, the imaging Ca^2+^ in whole tissues of plants genetically transformed with the aequorin gene is a very new development. We predict that this method, first employed in our laboratory, will bring about a revolution in our understanding of Ca^2+^ signalling at the multicellular level.
π SIMILAR VOLUMES
This second article in the series shows how Β―uorescence lifetime imaging allows natural biochemical and physiological properties of tissues to act as contrast agents and so provide a basis for distinguishing normal and diseased tissue components. When combined with methods for imaging through non-tr
An increasing number of studies indicate that changes in cytosolic free Ca2+ ([Ca"],) mediate specific types of signal transduction in plant cells. Modulation of [Ca2+], is likely to be achieved through changes in the activity of Ca2+ channels, which catalyse passive influx of Ca2+ to the cytosol fr
To illustrate the performance of our system, we have chosen to present results obtained on complex molecular systems based on two distinct XFP-tagged proteins expressed in HeLa cells, both mainly associated to the Golgi organelle. Even though dymeclin (1) and Rab6A (2) are