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5 protocols using hiseq2500 highoutput

1

Transcriptome Analysis of Pathogen-Infected Spikelets

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Three biological replicates of each genotype and treatment were used for transcriptome analysis. Total RNA was harvested from the infected spikelets at 12 and 48 hpi and also from the mock-inoculated spikelets using Spectrum Plant Total RNA Kit (Millipore Sigma) following manufacturer’s instructions. On column DNase digestion protocol (Millipore Sigma) was performed to remove any residual DNA during the RNA isolation. Three biological replicates for each genotype and treatment were used for transcriptome analysis. TruSeq dual indexed stranded RNA libraries were prepared following the manufacturers guidelines (Illumina). RNA quality and library size were analyzed on a Bioanalyzer (Agilent Technologies). Libraries were sequenced on an Illumina Genome Analyzer using HiSeq 2500 High Output, 50 bp PE flow cell and v4 chemistry at the University of Minnesota Genomics Center. The sequencing files were submitted to NCBI following preliminary analysis (SRA accession PRJNA595999).
Raw data was processed, using the rnaseq2 pipeline available at the gopher-pipelines (https://bitbucket.org/jgarbe/gopher-pipelines/wiki/rnaseq2-pipeline), for quality filtration, adapter trimming and reads mapping using Kallisto. The mapping result output was used for downstream analysis.
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2

Modular Cloning of Barcoded Libraries

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The vector pRDA_722 was modified to change the 3′ BbsI module from 6 (with an overhang of ATTC) to module 10 (overhang of TTCG), creating the vector pRDA_792. This enabled the GG reaction to include two additional fragments, a WellBC (with overhangs 6 and 9) and a PlateBC (with overhangs 9 and 10). These two additional fragments were ordered from IDT as two single stranded oligonucleotides and annealed together (see Data S3). Note the WellBCs vary in length to avoid monotemplate reads when assemblies are pooled together.
Fragments were cloned into pre-digested pRDA_792 via Golden Gate cloning in 96-well plates, using a 2:1 M ratio of fragments:destination vector. The ligation products were treated with Exonuclease V (New England Biolabs) in each 96-well plate, then 5 μL from each well was pooled. The pooled product was then isopropanol precipitated and electroporated into Stbl4 electrocompetent cells (Invitrogen) and grown at 30°C for 16 h on agar with 100 μg/mL carbenicillin. Colonies were scraped and plasmid DNA (pDNA) was prepared (HiSpeed Plasmid Maxi, Qiagen). To confirm library representation and distribution, the pDNA was sequenced by Illumina HiSeq2500 High Output. This pool was given the unique identifier CP1915.
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3

High-Throughput Genomic DNA Extraction and Sequencing

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Genomic DNA (gDNA) was isolated using the KingFisher Flex Purification System with the Mag-Bind® Blood & Tissue DNA HDQ Kit (Omega Bio-Tek). The gDNA concentrations were quantitated by Qubit.
For PCR amplification, gDNA was divided into 100 μL reactions such that each well had at most 10 μg of gDNA. Plasmid DNA (pDNA) was also included at a maximum of 100 pg per well. Per 96-well plate, a master mix consisted of 150 μL DNA Polymerase (Titanium Taq; Takara), 1 mL of 10x buffer, 800 μL of dNTPs (Takara), 50 μL of P5 stagger primer mix (stock at 100 μM concentration), 500 μL of DMSO (if used), and water to bring the final volume to 4 mL. Each well consisted of 50 μL gDNA plus water, 40 μL PCR master mix, and 10 μL of a uniquely barcoded P7 primer (stock at 5 μM concentration). PCR cycling conditions were as follows: (1) 95 °C for 1 min; (2) 94 °C for 30 s; (3) 52.5 °C for 30 s; (4) 72 °C for 30 s; (5) go to (2), ×27; (6) 72 °C for 10 min. PCR primers were synthesized at Integrated DNA Technologies (IDT). PCR products were purified with Agencourt AMPure XP SPRI beads according to manufacturer’s instructions (Beckman Coulter, A63880), using a 1:1 ratio of beads to PCR product. Samples were sequenced on a HiSeq2500 HighOutput (Illumina) with a 5% spike-in of PhiX.
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4

Genomic DNA Extraction and PCR Amplification

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Genomic DNA (gDNA) was isolated using the KingFisher Flex Purification System with the Mag-Bind Blood & Tissue DNA HDQ Kit (Omega Bio-Tek). The gDNA concentrations were quantitated by Qubit.
For PCR amplification, gDNA was divided into 100 μL reactions such that each well had at most 10 μg of gDNA. pDNA was also included at a maximum of 100 pg per well. Per 96-well plate, a master mix consisted of 150 μL DNA Polymerase (Titanium Taq; Takara), 1 mL of 10x buffer, 800 μL of dNTPs (Takara), 50 μL of P5 stagger primer mix (stock at 100 μM concentration), 500 μL of DMSO (if used), and water to bring the final volume to 4 mL. Each well consisted of 50 μL gDNA and water, 40 μL PCR master mix, and 10 μL of a uniquely barcoded P7 primer (stock at 5 μM concentration). PCR cycling conditions were as follows: (1) 95°C for 1 min; (2) 94°C for 30 s; (3) 52.5°C for 30 s; (4) 72°C for 30 s; (5) go to (2), x 27; (6) 72°C for 10 min. PCR primers were synthesized at Integrated DNA Technologies (IDT). PCR products were purified with Agencourt AMPure XP SPRI beads according to manufacturer’s instructions (Beckman Coulter, A63880), using a 1:1 ratio of beads to PCR product. Samples were sequenced on a HiSeq2500 HighOutput (Illumina) with a 5% spike-in of PhiX, using a custom oligo (oligo sequence: CTTGTGGAAAGGACGAAACACCGGT AATTTCTACTCTTGTAGAT).
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5

RNA-seq Library Preparation and Sequencing

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The quality of the RNA samples was accessed by Agilent Bioanalyzer and only samples with RIN value of >8 were used for library preparation. Library preparation was performed using TruSeq RNA Library Prep Kit (Illumina) according to manufacturer's protocol and sequencing was carried out on Illumina HiSeq 2500 High Output with 2 × 101 bp paired end sequencing or with Illumina HiSeq 4000 with 2 × 151 bp paired end sequencing.
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