Soil DNA Isolation Plus Kit
For the detection of microorganisms from soil samples
For research use only and NOT intended for in vitro diagnostics.
For the detection of microorganisms from soil samples
For research use only and NOT intended for in vitro diagnostics.
For the detection of microorganisms from soil samples
Register today to receive an exclusive 15% off* on your first order.
Norgen's Soil DNA Isolation Plus Kit provides a convenient and rapid method for the detection of microorganisms from soil samples. All types of soil samples can be processed with this kit, including common soil samples and difficult soil samples with high humic acid content such as compost and manure. The kit removes all traces of humic acid and PCR inhibitors using the provided the OSR (Organic Substance Removal) Solution. A simple and rapid spin column procedure is then used to further purify the DNA. Total genomic DNA can be isolated and purified from all the various microorganisms found in soil, such as bacteria, fungi and algae. The purified DNA is of the highest quality and is fully compatible with downstream PCR applications, as all humic acid substances and PCR inhibitors are removed during the isolation.
Figure 1. Comparison of DNA Yield from Top Soil and Clay Samples. Norgen’s Soil DNA Isolation Plus Kit (Cat. 64000) and Competitor M’s kit were used to isolate DNA from 250 mg of top soil and clay samples. Following isolation, 10 µL from each 100 µL elution was loaded on 1% TAE agarose gel. Lane M: Norgen's HighRanger 1kb DNA Ladder.
Figure 2. Comparison of DNA Concentration Isolated from Top Soil and Clay Samples. Norgen’s Soil DNA Isolation Plus Kit (Cat. 64000) and Competitor M’s kit were used to isolate DNA from 250 mg top soil and clay samples. Norgen’s kit showed higher DNA concentrations for both samples in comparison to the competitor kit.
Figure 3. High Quality DNA confirmed by Real-time PCR. Soil DNA was isolated from 250 mg of clay (containing low humic acids) and top soil (containing high humic acids) samples using Norgen's Soil DNA Isolation Plus Kit and Competitor M's Kit. DNA quality was confirmed by Real-time PCR using 4 µL of soil DNA (total PCR reaction volume was 20 µL) to detect 16s rDNA from different soil samples. The earlier Ct value with Norgen's DNA samples (red lines) compared to Competitor M's samples (green lines) indicated a higher quality of soil DNA for downstream applications.
Figure 4. Microbial profiles from soil samples (clay and top soil) isolated using Norgen’s Soil DNA Isolation Plus Kit (Cat. 64000) and Competitor M's kit. The relative abundance of phylum-level classifications indicates the efficiency of DNA isolation and the qualityof DNA. 16S rRNA genes (v3-4 region) were amplified and the amplicons were sequenced on Illumina® MiSeq™ (MiSeq Reagent Kit v3) using Norgen’s 16S Metagenomic workflow with Illumina 16S Metagenomics Pipeline (v1.0.1).
Figure 5. Abundance of bacterial genera heat map based on phylum level between two DNA soil samples isolation methods; Norgen’s Soil DNA Isolation Plus Kit (Cat. 64000) and Competitor M's kit. The numbers indicate species count.
Kit Specifications
|
|
Maximum Soil Input |
250 mg
|
Type of Soil Processed |
All soil types
|
Maximum Column Binding Capacity |
50 μg
|
Maximum Column Loading Volume |
650 μL
|
Time to Complete 10 Purifications |
30 minutes
|
Storage Conditions and Product Stability
All solutions should be kept tightly sealed and stored at room temperature. This kit is stable for 1 year from the date of shipment.
Component | Cat. 64000 (50 preps) |
---|---|
Lysis Buffer D | 45 mL |
Lysis Additive A | 2 x 6 mL |
Binding Buffer I | 7 mL |
OSR Solution | 3 mL |
Lysis Buffer QP | 25 mL |
Wash Solution A | 18 mL |
Elution Buffer B | 8 mL |
Bead B Tubes | 50 |
Spin Columns | 50 |
Collection Tubes | 50 |
Elution Tubes (1.7 mL) | 50 |
Product Insert | 1 |
Poor DNA recovery could be due to one or more of the following:
Depending on the type of soil, further vortexing with the flat bed vortex or bead beater equipment may be required. However, it is not recommended to increase the vortex time to longer than 10 minutes at maximum speed.
Ensure that the provided Lysis Additive A is added to separate humic acid and increase DNA yield.
Ensure that 400 µL of Lysis Buffer QP and 550 µL of 96-100% ethanol are added to the lysate before binding to the column.
Ensure that 42 mL of 96-100% ethanol is added to the supplied Wash Solution A prior to use.
If the DNA does not perform well in downstream applications, it may be due to one or more of the following:
The elution contains high humic acids. Ensure that the OSR Solution was added to the clean lysate. Also, ensure the column was washed with Binding Buffer B.
Traces of humic acids or salt from the binding step may remain in the sample if the column is not washed with the provided Binding Buffer B and Wash Solution A. Humic acids and salt may interfere with downstream applications, and thus must be washed from the column.
Ensure that the dry spin under the Column Wash procedure is performed in order to remove traces of ethanol prior to elution. Ethanol is known to interfere with many downstream applications.
Take steps to optimize the PCR conditions being used, including varying the amount of template (10 ng to 50 ng for 20 µL of PCR reaction is recommended), changing the source of Taq polymerase, looking into the primer design, and adjusting the annealing conditions.
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