Name: floral-dip transformation of arabidopsis thaliana to examine ptso2::&beta;-glucuronidase reporter gene expression
Uploaded: 2010-06-11T17:00:00
Description: Watch this Scientific Journal Video about Floral-dip Transformation of Arabidopsis thaliana to Examine pTSO2::ÃŽÂ²-glucuronidase Reporter Gene Expression at JoVE.com

We thank Chunxin Wang for constructing pTSO2::GUS and for photos in Figure 1, Detlef Weigel for sharing the GUS-foolproof protocol, Paja Sijacic, and Courtney Hollender for helpful comments. Research in Z. L s laboratory is supported by the US National Science Foundation (IOB0616096 and MCB0744752). Z.L. is partially supported by the University of Maryland Agricultural Experiment Station.

I. Floral-dip transformation of Arabidopsis thaliana
<ol>
	<li>Approximately 1 month prior to transformation, sow Arabidopsis seeds onto 4 to 8 pots (5 inch square pots) with approximately 10-15 plants per pot. For plants with normal fertility, 4 pots of plants per plasmid construct will be sufficient. If one has to transform mutant Arabidopsis with reduced fertility, increase the number of pots accordingly.</li>
	<li>The plants are grown under standard conditions (16 hr light and 8 hr dark a...

<ol>
	<li>Clough, S. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Floral+dip:+agrobacterium-mediated+germ+line+transformation.">Floral dip: agrobacterium-mediated germ line transformation.</a> Methods Mol Biol. 286, 91-91 (2005).</li><li>Clough, S. J., Bent, A. F. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Floral+dip:+a+simplified+method+for+Agrobacterium-mediated+transformation+of+Arabidopsis+thaliana.">Floral dip: a simplified method for Agrobacterium-mediated transformation of Arabidopsis thaliana.</a> Plant J. 16 (6), 735-735 (1998).</li><li>Wang, C., Liu, Z. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Arabidopsis+ribonucleotide+reductases+are+critical+for+cell+cycle+progression,+DNA+damage+repair,+and+plant+development.">Arabidopsis ribonucleotide reductases are critical for cell cycle progression, DNA damage repair, and plant development.</a> Plant Cell. 18 (2), 350-350 (2006).</li></ol>

The efficiency of transformation is determined by many different factors, which are discussed below:
<ol>
<li> The health of the plants and their age are of primary importance. Approximately one month old plants producing numerous immature floral buds are ideal. Trimming off primary shoots to encourage secondary shoot formation 3-4 days before transformation will increase transformation efficiency. Older plants will give rise to transformants but at a lower rate.</li>
<li> Fertility of the plants is important. If one...

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">	
		
		<div>
		<table border="1">
		<thead>
		<tr>
		<th>Material Name</th>
		<th>Type</th>
		<th>Company</th>
		<th>Catalogue Number</th>
		<th>Comment</th>
		</tr>
		</thead>
		<tbody>
		
<tr>
<td>6-benzyladenine</td>
<td>&nbsp;</td>
<td>Sigma</td>
<td>852430</td>
<td>&nbsp;</td>
<tr>
<td>Silwet-77</td>
<td>&nbsp;</td>
<td>Crompton Corp.</td>
<td>&nbsp;</td>
<td>Toxic, wear gloves</td>
</tr>
<tr>
<td>Murashige and Skoog Basal medium (MS)</td>
<td>&nbsp;</td>
<td>Sigma</td>
<td>M5519</td>
<td>&nbsp;</td>
<tr>
<td>Gamborg's vitamin solution 1000X</td>
<td>&nbsp;</td>
<td>Sigma</td>
<td>G1019</td>
<td>&nbsp;</td>
<tr>
<td>X-Gluc (5-bromo-4-chloro-3-indolyl &beta;-D-glucuronide cyclohexamine salt</td>
<td>&nbsp;</td>
<td>Biosynth</td>
<td>B-7300</td>
<td>Toxic, light sensitive keep in the dark</td>
</tr>
<tr>
<td>Micropore 3M Tape</td>
<td>&nbsp;</td>
<td>Fisher</td>
<td>19027761</td>
<td>&nbsp;</td>		</tbody>
		</table>
		</div>

floral-dip transformation of arabidopsis thaliana to examine ptso2::&beta;-glucuronidase reporter gene expression

The ability to introduce foreign genes into an organism is the foundation for modern biology and biotechnology. In the model flowering plant Arabidopsis thaliana, the floral-dip transformation method1-2 has replaced all previous methods because of its simplicity, efficiency, and low cost. Specifically, shoots of young flowering Arabidopsis plants are dipped in a solution of Agrobacterium tumefaciens carrying specific plasmid constructs. After dipping, the plants are returned to normal growth and yield seeds, a small percentage of which are transformed with the foreign gene and can be selected for on medium containing antibiotics. This floral-dip method significantly facilitated Arabidopsis research and contributed greatly to our understanding of plant gene function. In this study, we use the floral-dip method to transform a reporter gene, &beta;-glucuronidase (GUS), under the control of TSO2 promoter. TSO2, coding for the Ribonucleotide Reductase (RNR) small subunit3, is a cell cycle regulated gene essential for dNDP biosynthesis in the S-phase of the cell cycle. Examination of GUS expression in transgenic Arabidopsis seedlings shows that TSO2 is expressed in actively dividing tissues. The reported experimental method and materials can be easily adapted not only for research but also for education at high school and college levels.

Watch this Scientific Journal Video about Floral-dip Transformation of Arabidopsis thaliana to Examine pTSO2::ÃŽÂ²-glucuronidase Reporter Gene Expression at JoVE.com

Floral-dip Transformation of Arabidopsis thaliana to Examine pTSO2::ÃƒÅ½Ã‚Â²-glucuronidase Reporter Gene Expression

This article illustrates the floral-dip method of Agrobacterium tumefaciens -mediated transformation of Arabidopsis thaliana. By introducing a cell-cycle regulated promoter-reporter, pTSO2::&beta;-glucuronidase (GUS), into Arabidopsis, we illustrates how one detects GUS reporter expression in transgenic seedlings.

Floral-dip Transformation of Arabidopsis thaliana to Examine pTSO2::&beta;-glucuronidase Reporter Gene Expression

The ability to introduce foreign genes into an organism is the foundation for modern biology and biotechnology. In the model flowering plant Arabidopsis ...

Research

JoVE Journal

Biology

The Preparation of Primary Hematopoietic Cell Cultures From Murine Bone Marrow for Electroporation

It is becoming increasingly apparent that electroporation is the most effective way to introduce plasmid DNA or siRNA into primary cells. The Gene Pulser ...

Using the Gene Pulser MXcell Electroporation System to Transfect Primary Cells with High Efficiency

Using an Automated Cell Counter to Simplify Gene Expression Studies: siRNA Knockdown of IL-4 Dependent Gene Expression in Namalwa Cells

The use of siRNA mediated gene knockdown is continuing to be an important tool in studies of gene expression.  siRNA studies are being conducted not only ...

Investigating Tissue- and Organ-specific Phytochrome Responses using FACS-assisted Cell-type Specific Expression Profiling in Arabidopsis thaliana

Investigating Tissue- and Organ-specific Phytochrome Responses using FACS-assisted Cell-type Specific Expression Profiling in Arabidopsis thaliana

Light mediates an array of developmental and adaptive processes throughout the life cycle of a plant. Plants utilize light-absorbing molecules called ...

In vitro Reconstitution of the Active T. castaneum Telomerase

In vitro Reconstitution of the Active T. castaneum Telomerase

Efforts to isolate the catalytic subunit of telomerase, TERT, in sufficient quantities for structural studies, have been met with limited success for more ...

Histochemical Staining of Arabidopsis thaliana Secondary Cell Wall Elements

Histochemical Staining of Arabidopsis thaliana Secondary Cell Wall Elements

Histokemisk farvning af<em&gt; Arabidopsis thaliana</em&gt; Sekundært Cell vægelementer

Arabidopsis thaliana is a model organism commonly used to understand and manipulate various cellular processes in plants, and it has been used extensively ...

Analysis of Global RNA Synthesis at the Single Cell Level following Hypoxia

Analyse af Global RNA-syntese på enkelt celle niveau efter Hypoxia

Hypoxia or lowering of the oxygen availability is involved in many physiological and pathological processes. At the molecular level, cells initiate a ...

Floral-Dip Transformation of Flax (Linum usitatissimum) to Generate Transgenic Progenies with a High Transformation Rate

Floral-Dip Transformation of Flax Linum usitatissimum to Generate Transgenic Progenies with a High Transformation Rate

Floral-Dip Transformation af hør (<em&gt; Linum usitatissimum</em&gt;) Til at generere transgene afkom med en høj Transformation Rate

Agrobacterium-mediated plant transformation via floral-dip is a widely used technique in the field of plant transformation and has been reported to be ...

Visualizing Stromule Frequency with Fluorescence Microscopy

Visualisere Stromule Frekvens med Fluorescence Microscopy

Stromules, or "stroma-filled tubules", are narrow, tubular extensions from the surface of the chloroplast that are universally observed in plant cells but ...

Spatiotemporal Investigation of ERL1 Dynamics via Confocal Imaging

Image-Based Methods to Study Membrane Trafficking Events in Stomatal Lineage Cells

Image-Based Methods to Study Membrane Trafficking Events in Stomatal Lineage Cells (Video) | JoVE 

In eukaryotic cells, membrane components, including proteins and lipids, are spatiotemporally transported to their destination within the endomembrane ...