Apr 17, 2023

Public workspaceLakes ABPS Protocol - Optimized protocol for the extraction of fish DNA from freshwater sediments (Thomson-Laing et al., 2022)

DOI
dx.doi.org/10.17504/protocols.io.yxmvm24d6g3p/v1
  • Georgia Thomson-Laing1
  • 1Cawthron Institute, Nelson, New Zealand
Grayson Huston
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DOI: dx.doi.org/10.17504/protocols.io.yxmvm24d6g3p/v1
Protocol Citation: Georgia Thomson-Laing 2023. Lakes ABPS Protocol - Optimized protocol for the extraction of fish DNA from freshwater sediments (Thomson-Laing et al., 2022). protocols.io https://dx.doi.org/10.17504/protocols.io.yxmvm24d6g3p/v1
License: This is an open access protocol distributed under the terms of the Creative Commons Attribution License,  which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited
Protocol status: Working
We use this protocol and it's working
Created: April 17, 2023
Last Modified: April 18, 2023
Protocol Integer ID: 80636
Abstract
DNA was extracted from lake sediment samples by an alkaline lysis method with ethanol precipitation adapted from method described by Kuwae et al. (2020); Sakata et al. (2020b); Sakata et al. (2020a).

In a comparison of multiple sedDNA extraction methods, the ABPS (Alkaline buffer - power soil) protocol yielded the highest concentrations of target genets across a range of lake sediments. This protocol was further optimized (65C incubation temperature, pooling of multiple PowerSoil extractions) to overcome technical challenges related to co-precipitation of organic content in lake-surface sediments.

The optimized ABPS protocol is called the "Lakes ABPS protocol"

This protocol has proven to be successful at detecting fish sedDNA from surface sediments in multiple systems for multiple species.
Alkaline extraction
Alkaline extraction
1h 51m
1h 51m
INTO a 50 mL tube add:
Amount10 g of sediment sample
Amount6 mL sodium hydroxide (0.33M)
Amount3 mL Tris-EDTA (pH 8)
VORTEX for Duration00:01:00

INCUBATE at Temperature65 °C for Duration00:50:00
51m
ALLOW samples to cool to TemperatureRoom temperature

CENTRIFUGE at Amount15000 x g for Duration01:00:00
1h
Ethanol precipitation
Ethanol precipitation
2h
2h
TRANSFER Amount7.5 mL of supernatant to a new 50 mL tube

ADD Amount7.5 mL of Tris HCl (1M, pH 6.7) to neutralize
ADD Amount1.5 mL sodium acetate (3M, pH 5.2)

ADD Amount30 mL of molecular grade 100% ethanol

INCUBATE samples at Temperature-20 °C for <Duration01:00:00
1h
CENTRIFUGE samples at Amount10000 x g for Duration01:00:00

DISCARD supernatant

RETAIN precipitated pellet
1h
DNeasy PowerSoil extraction
DNeasy PowerSoil extraction
EXTRACT the total pellet using multiple DNeasy PowerSoil DNA Isolation Kit extractions following the manufacturer's instructions
Note
Amount0.25-0.5 g of pellet per extraction

POOL resultant DNA elutes

DNA is now ready for downstream applications
Protocol references
Thomson-Laing, G.,Howarth, J. D.,Vandergoes, M. J., &Wood, S. A.(2022).Optimised protocol for the extraction of fish DNA from freshwater sediments.Freshwater Biology,67,1584–1603.https://doi.org/10.1111/fwb.13962