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: December 18, 2023
Last Modified: February 06, 2024
Protocol Integer ID: 92455
Funders Acknowledgement:
David and Lucile Packard Foundation
NASA
Grant ID: 80NSSC21M0032
NOAA
Grant ID: NA22NOS0120184
Abstract
This sequencing protocol is intended to directly follow and use the PCR products of the protocol:
"Environmental DNA (eDNA) 12S Metabarcoding PCR Protocol (with Platinum SuperFi II Taq)" which amplifies the hypervariable region of the mitochondrial DNA 12S rRNA gene in eukaryotes.
This protocol creates a pooled library which is then size selected using a Blue Pippin or Pippin HT to select for the vertebrate/fish band (~350 bp) and remove the co-amplified bacterial band (~435 bp). Then the pooled product is sequenced on an Illumina MiSeq v2 in a 2x250bp paired end format.
MIOP: Minimum Information about an Omics Protocol
MIOP: Minimum Information about an Omics Protocol
MIOP Term
Value
methodology category
omics analysis
project
Marine Biodiversity Observation Network (MBON)
purpose
taxonomic diversity assessment by targeted gene survey [OBI:0001960]
Environmental DNA (eDNA) 12S Metabarcoding PCR Protocol (with Platinum SuperFi II Taq)
Jacoby Baker
2023-11-07
This is a list of other protocols which should be known to users of this protocol. Please include the link to each related protocol.
ACRONYMS AND ABBREVIATIONS
ACRONYMS AND ABBREVIATIONS
ACRONYM / ABBREVIATION
DEFINITION
eDNA
environmental DNA
GLOSSARY
GLOSSARY
SPECIALISED TERM
DEFINITION
BACKGROUND
BACKGROUND
Summary
This sequencing protocol is intended to directly follow and use the PCR products of the protocol:
"Environmental DNA (eDNA) 12S Metabarcoding PCR Protocol (with Platinum SuperFi II Taq)" which amplifies the hypervariable region of the mitochondrial DNA 12S rRNA gene in eukaryotes.
The primers (MiFish-U-F & MiFish-U-R) used in the PCR protocol were developed by Miya et al., 2015 for metabarcoding environmental DNA (eDNA) from fishes.
This work was supported by the David and Lucile Packard Foundation, and NASA award 80NSSC21M0032 and NOAA award NA22NOS0120184 in support of the CeNCOOS MBON.
Method description and rationale
This protocol creates a pooled library which is then size selected using a Blue Pippin or Pippin HT to select for the vertebrate/fish band (~350 bp) and remove the co-amplified bacterial band (~435 bp). Then the pooled product is sequenced on an Illumina MiSeq v2 in a 2x250bp paired end format.
Spatial coverage and environment(s) of relevance
This protocol has been used to sequence extracted DNA from filtered sea water samples taken from marine coastal stations off the western coast of North America (primarily off of California).
Identify hazards associated with the procedure and specify protective equipment and safety training required to safely execute the procedure
Training requirements
Time needed to execute the procedure
EQUIPMENT
EQUIPMENT
DESCRIPTION e.g. filter
PRODUCT NAME AND MODEL Provide the official name of the product
MANUFACTURER Provide the name of the manufacturer of the product.
QUANTITY Provide quantities necessary for one application of the standard operating procedure (e.g. number of filters).
REMARK For example, some of the consumable may need to be sterilized, some commercial solution may need to be diluted or shielded from light during the operating procedure.
In the following SOP, please use the exact names of equipment as noted in the table above.
Provide a step-by-step description of the protocol. The identification of difficult steps in the protocol and the provision of recommendations for the execution of those steps are encouraged.
PREPARATION
PREPARATION
Follow steps in the protocol "Environmental DNA (eDNA) 12S Metabarcoding PCR Protocol (with Platinum SuperFi II Taq)" through secondary amplification and QC of 12S PCR product.
Pool Library
Pool Library
1. After secondary PCR, products were run through Invitrogen SequalPrep Normalization Plate (ThermoFisher Scientific) using manufacturer’s protocol to create pooled library.
2. The library pools were QC’d and quantified using a combination of Qubit dsDNA HS, Agilent 4200 TapeStation HS DNA1000 and Invitrogen Collibri Library Quantification qPCR assays.
Size selection of final library
Size selection of final library
1. After the pooled library was QC’d, the library was size selected with either a Blue Pippin or Pippin HT to select for the vertebrate/fish band (~350 bp) and remove the co-amplified bacterial band (~435 bp).
2. After size selection, the pooled library was QC’d again to confirm selection of the correct band and new amplicon concentrations.
SEQUENCING
SEQUENCING
The pooled product for the genetic locus was loaded on a standard MiSeq v2 flow cell and sequenced in a 2x250bp paired end format using a v2 500-cycle MiSeq reagent cartridge.
2. The MiSeq run was performed with a 20% PhiX spike added.
3. Primers complementary to the Fluidigm CS1 & CS2 oligomers were added to appropriate wells of the reagent cartridge to server as sequencing and index read primers.
12S Sequencing primers (5’ to 3’ direction):
FL1-CS1(read1)
A+CA+CTG+ACGACATGGTTCTACA
FL1-CS2(read2)
T+AC+GGT+AGCAGAGACTTGGTCT
FL2-CS1rc
T+GT+AG+AACCATGTCGTCAGTGT
FL2-CS2rc(index)
A+GAC+CA+AGTCTCTGCTACCGTA
Sequencing Primer Name
Direction
Sequence (5’ -> 3’)
FL1-CS1
read1
A+CA+CTG+ACGACATGGTTCTACA
FL1-CS2
read2
T+AC+GGT+AGCAGAGACTTGGTCT
FL2-CS1rc
T+GT+AG+AACCATGTCGTCAGTGT
FL2-CS2rc
index
A+GAC+CA+AGTCTCTGCTACCGTA
4. Base calling was done by Illumina Real Time Analysis (RTA) v1.18.54 and output of RTA was demultiplexed and converted to FastQ format with Illumina Bcl2fastq v2.20.0