The short reads (Illumina), the accurate long reads (HiFi), and the ultra-long reads (ONT) are obtained from the NIST's Genome-in-a-Bottle (GIAB) project:
https://ftp-trace.ncbi.nlm.nih.gov/ReferenceSamples/giab/data/AshkenazimTrio/HG002_NA24385_son/
https://ftp-trace.ncbi.nlm.nih.gov/ReferenceSamples/giab/data/AshkenazimTrio/HG002_NA24385_son/PacBio_CCS_15kb_20kb_chemistry2/reads/m64011_190830_220126.fastq.gz
We consider only the first 2 million reads whose length is greater than or equal 1000 bp (using NanoFilt --length 1000)
https://ftp-trace.ncbi.nlm.nih.gov/ReferenceSamples/giab/data/AshkenazimTrio/HG002_NA24385_son/Ultralong_OxfordNanopore/guppy-V3.4.5/HG002_ONT-UL_GIAB_20200204.fastq.gz
https://ftp-trace.ncbi.nlm.nih.gov/ReferenceSamples/giab/data/AshkenazimTrio/HG002_NA24385_son/NIST_Illumina_2x250bps/reads/D1_S1_L001_R1_001.fastq.gz
https://ftp-trace.ncbi.nlm.nih.gov/ReferenceSamples/giab/data/AshkenazimTrio/HG002_NA24385_son/NIST_Illumina_2x250bps/reads/D1_S1_L001_R1_002.fastq.gz
https://ftp-trace.ncbi.nlm.nih.gov/ReferenceSamples/giab/data/AshkenazimTrio/HG002_NA24385_son/NIST_Illumina_2x250bps/reads/D1_S1_L001_R1_003.fastq.gz
https://data.cami-challenge.org/
RL_S001__insert_270.fq
RH_S001__insert_270.fq
https://ftp-trace.ncbi.nlm.nih.gov/ReferenceSamples/giab/release/references/GRCh38/GCA_000001405.15_GRCh38_no_alt_analysis_set.fasta.gz
https://www.ncbi.nlm.nih.gov/assembly/GCF_000001405.40
The largest sequenced reference genome, pinus taeda (also known as loblolly pine, GCA_000404065.3, release date 9 January 2017)
https://www.ncbi.nlm.nih.gov/assembly/GCA_000404065.3/
We obtain our metagenomes for building the reference database from RefSeq (https://www.ncbi.nlm.nih.gov/refseq) database. The list of TAXIDs for the metagenomes we choose is listed as follows:
RefSeq1_taxids.txt
RefSeq2_taxids.txt