Summary of Study ST002330

This data is available at the NIH Common Fund's National Metabolomics Data Repository (NMDR) website, the Metabolomics Workbench,, where it has been assigned Project ID PR001494. The data can be accessed directly via it's Project DOI: 10.21228/M8MD91 This work is supported by NIH grant, U2C- DK119886.


This study contains a large results data set and is not available in the mwTab file. It is only available for download via FTP as data file(s) here.

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Study IDST002330
Study TitleEarly-stage responses to Plasmodiophora brassicae at the metabolome levels in clubroot resistant and susceptible oilseed Brassica napus
Study TypeTimecourse experiment
Study SummaryA total of 36 samples comprised two types of genotypes [CR (5 individuals pooled in each biological replicate) and CS (5 individuals pooled in each biological replicate)], two treatments (inoculated and uninoculated) and three biological replicates generated from three independent experiments and collected at 1-, 4-, and 7–DPI were used to extract primary and secondary metabolites and analyse the differences among the treatments.
Trent University
LaboratoryEmery Lab
Last NameKisiala
First NameAnna
Address1600 West Bank Drive, Trent University
Submit Date2022-10-17
Raw Data AvailableYes
Raw Data File Type(s)mzML
Analysis Type DetailLC-MS
Release Date2022-11-16
Release Version1
Anna Kisiala Anna Kisiala application/zip

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Sample Preparation:

Sampleprep ID:SP002423
Sampleprep Summary:Approximately 100 mg of fresh weight of root tissue samples (n=3) were aliquoted from finely homogenized frozen root tissues, placed into 2 mL safe-lock centrifuge tubes with two zirconium oxide beads, flash frozen in liquid nitrogen and stored at − 80 °C until further processing. To accommodate for different extraction procedures, two sample sets were prepared from the same bulk to independently analyze the content of primary metabolites (free amino acids, sugars and sugar phosphates, organic acids), and secondary metabolites (glucosinolates) using High Performance Liquid Chromatography – High-Resolution Accurate Mass – Full Scan Mass Spectrometry (HPLC-(HRAM)-MS). Samples for extraction of primary and secondary metabolites were spiked with 10ng of two labeled aromatic CKs (13C5-oT and 2H7-BAR) and extracted with ice-cold methanol (methanol-water [8:2, v/v]) following procedures of Chen et al 3 with modifications. Each filtered extract was split in half and each 500 µL transferred to a new 2 mL tube. Divided extracts were evaporated to dryness at ambient temperature in a speed vac concentrator. Sample residues designed for the analysis of primary metabolites were redissolved in 500 µl of 90% acetonitrile (acetonitrile: water, v/v) and samples for the analysis of glucosinolates were redissolved in 500 µL of 5% acetonitrile with 0.1% formic acid (acetonitrile: formic acid: water, v/v/v). Additionally, sample mixtures composed of 10uL of each sample extract were prepared separately for primary and secondary metabolite analysis and used to generate MS/MS data for compound identification. All samples were filtered using 0.2 µm PVDF spin filter with 2 mL receiver tubes (InnoSep Spin, Canadian Life Sciences, Peterborough, Canada) and transferred to insert-equipped 2 mL HPLC vials. A volume of 25 μL of each sample was injected into a Dionex UltiMate 3000 HPLC coupled to a QExactive Orbitrap mass spectrometer.
Sampleprep Protocol Filename:Protocol_methods-canola
Extraction Method:80% MeOH
Extract Cleanup:0.2 µm PVDF spin filter with 2 mL receiver tubes
Extract Storage:-20℃
Sample Resuspension:Primary metabolites - 90% ACN, glucosinolates - 5% ACN
Sample Spiking:two labeled aromatic CKs (13C5-oT and 2H7-BAR)