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DNA stain for living plant cells

Geert Olyslaegers olysla at ruca.ua.ac.be
Thu Oct 16 06:00:59 EST 1997

Dear Kwee Hong Sien,

There are several methods to stain DNA in living cells. We currently use
SITO-16 which is delivered by Molecular Probes. Pyridium Iodide and
Acridine Orange are also available but it seems they stain both DNA and



  Geert Olyslaegers                           E-mail: olysla at ruca.ua.ac.be
  Section Plantphysiology and Morphology             Voice:+32-3-820-22-58
  Department of Biology - University of Antwerp (UIA)  Fax:+32-3-820-22-71
  Universiteitsplein 1  - 2610 Wilrijk (Antwerp) - Belgium

On 16 Oct 1997, Kwee Hong Sien wrote:

> Dear all,
> Can someone give me a method on how to stain DNA in LIVING plant cells? 
> I would like to check in which cell cycle stage my BY-2 tobacco 
> suspension cells are. I have used DAPI and Ethidium bromide (excitated 
> in UV and FITC respectively) but they only enter dead cells. I presume 
> the dyes can't enter the cells due to the low permeability of the cell 
> walls? I also tried DAPI and EtBr in combination with PEG, but no 
> success. Haven't tried detergents though. Off course I can also try usig 
> BY-2 protoplasts, but if possible I would like to see normal plant 
> cells.
> Thanks in advance!
> Hong Sien Kwee
> Plant Genetics Laboratory
> Institute of Molecular Agrobiology
> 59A The Fleming
> Science Park Drive
> Singapore 118240

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