Algae, Tree, Herbs, Bush, Shrub, Grasses, Vines, Fern, Moss, Spermatophyta, Bryophyta, Fern Ally, Flower, Photosynthesis, Eukaryote, Prokaryote, carbohydrate, vitamins, amino acids, botany, lipids, proteins, cell, cell wall, biotechnology, metabolities, enzymes, agriculture, horticulture, agronomy, bryology, plaleobotany, phytochemistry, enthnobotany, anatomy, ecology, plant breeding, ecology, genetics, chlorophyll, chloroplast, gymnosperms, sporophytes, spores, seed, pollination, pollen, agriculture, horticulture, taxanomy, fungi, molecular biology, biochemistry, bioinfomatics, microbiology, fertilizers, insecticides, pesticides, herbicides, plant growth regulators, medicinal plants, herbal medicines, chemistry, cytogenetics, bryology, ethnobotany, plant pathology, methodolgy, research institutes, scientific journals, companies, farmer, scientists, plant nutrition
Select Language:
Main Menu
Please click the main subject to get the list of sub-categories
Services offered
  Section: Biotechnology Methods » Molecular Biology
Please share with your friends:  

Arabidopsis Thaliana DNA Isolation

Molecular Biology
  The Central Dogma
  Protein Synthesis in Cell Free Systems
  Polytene Chromosomes of Dipterans
  Salivary Gland Preparation (Squash Technique)
  Extraction of Chromatin
  Chromatin Electrophoresis
  Extraction and Electrophoresis of Histones
  Karyotype Analysis
  In Situ Hybridization
  Culturing Peripheral Blood Lymphocytes
  Microslide Preparation of Metaphases for In-Situ Hybridization
  Staining Chromosomes (G-Banding)
  Nucleic Acids
  Extraction of DNA from Bovine Spleen
  Purification of DNA
  Characterization of DNA
  DNA-Dische Diphenylamine Determination
  Melting Point Determination
  CsCl-Density Separation of DNA
  Phenol Extraction of rRNA (Rat liver)
  Spectrophotometric Analysis of rRNA
  Determination of Amount of RNA by the Orcinol Method
  Sucrose Density Fractionation
  Nucleotide Composition of RNA
  Isolation of Genomic DNA—DNA Extraction Procedure
  Isolation of Genomic DNA from Bacterial Cells
  Preparation of Genomic DNA from Bacteria
  Extraction of Genomic DNA from Plant Source
  Extraction of DNA from Goat Liver
  Isolation of Cotton Genomic DNA from Leaf Tissue
  Arabidopsis Thaliana DNA Isolation
  Plant DNA Extraction
  Phenol/Chloroform Extraction of DNA
  Ethanol Precipitation of DNA
  Isolation of Mitochondrial DNA
  Isolation of Chloroplast DNA
  DNA Extraction of Rhizobium (CsCl Method)
  Isolation of Plasmids
  RNA Isolation
  Preparation of Vanadyl-Ribonucleoside Complexes that Inhibit Ribonuclease Activity
  RNA Extraction Method for Cotton
  Isolation of RNA from Bacteroids
  Isolation of RNA from Free-Living Rhizobia
  Estimation of DNA purity and Quantification
  Fungal DNA Isolation
  Methylene Blue DNA Staining
  Blotting Techniques—Southern, Northern, Western Blotting
  Preparing the Probe
  Southern Blotting (First Method)
  Southern Blotting (Second Method)
  Western Blotting
  Western Blot Analysis of Epitoped-tagged Proteins using the Chemifluorescent Detection Method for Alkaline Phosphatase-conjugated Antibodies
  Southern Blot
  Southern Analysis of Mouse Toe/Tail DNA
  Northern Blotting
  Restriction Digestion Methods—Restriction Enzyme Digests
  Restriction Digestion of Plasmid, Cosmid, and Phage DNAs
  Manual Method of Restriction Digestion of Human DNA
  Preparation of High-Molecular-Weight Human DNA Restriction Fragments in Agarose Plugs
  Restriction Enzyme Digestion of DNA
  Electroelution of DNA Fragments from Agarose into Dialysis Tubing
  Isolation of Restriction Fragments from Agarose Gels by Collection onto DEAE Cellulose
  Ligation of Insert DNA to Vector DNA
  PCR Methods (Polymerase Chain Reaction)
  Polymerase Chain Reaction
  DNA Amplification by the PCR Method

Procedure: (all steps at 0°C–4°C unless indicated)
  1. Harvest 100 g tissue (plants can be any age up to just bolting), which has been destarched by placing it in the dark for 48 hrs).
  2. After washing (ice-cold H2O), chop into small pieces with a single-edge razor blade.
  3. Add ice-cold diethylether until it covers the tissue and stir for 3 minutes. Pour into the Buchner funnel to remove ether and rinse with cold H2O.
  4. Add 300 mL of buffer A (1 M sucrose, 10 mM Tris-HCl (pH 7.2), 5 mM MgCl2, 5 mM 2-mercaptoethanol, and 400 µg/mL ethidium bromide). Grind tissue with a Polytron (Brinkmann) at medium speed for 1 to 3 minutes until tissue is homogenized.
  5. Filter through 4 layers of cheesecloth, then through 2 layers of Miracloth (Calbiochem).
  6. Centrifuge 9000 rpm for 15 minutes in a Beckman JA-10 rotor.
  7. Resuspend pellet in 50 mL of buffer A plus 0.5% Triton X-100 (Sigma) with a homogenizer (55-mL glass pestle unit).
  8. Centrifuge in 2 30-mL Corex tubes at 8000 rpm for 10 minutes in a Beckman JS-13 rotor.
  9. Repeat step 7, and centrifuge at 6000 rpm for 10 minutes in a JS-13 rotor.
  10. Resuspend pellet in 10 mL of buffer A plus 0.5% Triton X-100. Layer crude nuclei over 2 discontinuous Percoll gradients constructed in 30-mL Corex tubes as follows: 5-mL layers containing from the bottom upward 60% (v/v) and 35% (v/v) percoll A:buffer A. Percoll A is made as follows: to 34.23 g sucrose add 1.0 mL of 1 M Tris-HCl (pH 7.2), 0.5 mL of 1 M MgCl2, 34 µL 2-mercaptoethanol, and Percoll to a final volume of 100 mL centrifuge in a JS-13 rotor at 2000 rpm. After 5 minutes increase speed to 8000 rpm and centrifuge an additional 15 min. The starch will pellet, the bulk of the nuclei will band at a 35% to 65% interface and intact chloroplasts will band at the 0%–35% interface.
  11. The zone containing the nuclei is collected, diluted with 5 to 10 volumes of buffer A, and pelleted by centrifugation at 8000 rpm for 10 minutes in a JS-13 rotor. Nuclei can be visualized by light microscopy after staining with 1/5 to 1/10 volume 1% Azure C (Sigma) in buffer A minus ethidium bromide.
  12. Resuspend nuclei in 5 to 10 mL of 250 mM sucrose, 10 mM Tris-HCl (pH 8.0), and 5 mM MgCl2 by homogenization.
  13. Add EDTA to 20 mM and TE (10 mM Tris HCl (pH 8.0), 1 mM EDTA) to a final volume of 20 mL. Add 1 mL of 20% (w/v) Sarkosyl. Add proteinase K to 50–100 µg/mL and digest at 55°C until the solution clarifies (2 hrs).
  14. Add 21 g CsCl. When dissolved, add 1 mL of 10 mg/mL ethidium bromide and transfer to 2 quick-seal Ti 70.1 tubes and centrifuge at 45000 rpm at 20°C in a Beckman Ti 70.1 rotor for 36 to 48 hours.
  15. Remove banded DNA, extract with 1 volume of 3 M CsCl saturated isopropanol, repeat extraction until all ethidium bromide is removed, and dialyze 4 times against 1 L of TE plus 10 mM NaCl. The inclusion of ethidium bromide is essential if high molecular weight DNA is desired.

Copyrights 2012 © | Disclaimer