Summary of Study ST002060

This data is available at the NIH Common Fund's National Metabolomics Data Repository (NMDR) website, the Metabolomics Workbench, https://www.metabolomicsworkbench.org, where it has been assigned Project ID PR001304. The data can be accessed directly via it's Project DOI: 10.21228/M8570V This work is supported by NIH grant, U2C- DK119886.

See: https://www.metabolomicsworkbench.org/about/howtocite.php

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 ID	ST002060
Study Title	Pollen metabolomics using Arabidopsis thaliana: Comparison of pollen at mature, hydration and germination stage
Study Type	Untargeted Metabolomics
Study Summary	In this study, we investigated the differential metabolic pathway enrichment among mature, hydrated, and germinated pollen using untargeted metabolomics analysis. Integration of publicly available transcriptome with presented metabolome data revealed starch and sucrose metabolism was significantly increased during pollen hydration and germination. The alterations in central metabolism focusing on sugar, fatty acids, and lipids were analyzed in detail. Several metabolites, including palmitic acid, oleic acid, linolenic acid, quercetin, luteolin/kaempferol, and γ-aminobutyric acid (GABA), were elevated in the hydrated pollen, suggesting a potential role in activating pollen tube emergence. The metabolite levels of mature, hydrated, and germinated pollen, presented in this work provide insights on the molecular basis of pollen germination.
Institute	University of Illinois Urbana-Champaign
Department	Department of Plant Biology
Laboratory	Li-Qing Chen Lab
Last Name	Kambhampati
First Name	Shrikaar
Address	975 North Warson Road, St. Louis, MO 63132
Email	shrikaar.k@gmail.com
Phone	3144025550
Submit Date	2022-01-17
Num Groups	3
Total Subjects	12
Raw Data Available	Yes
Raw Data File Type(s)	mzML
Analysis Type Detail	LC-MS
Release Date	2022-02-07
Release Version	1

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Treatment:

Treatment ID:	TR002154
Treatment Summary:	For hydrated pollen and germinated pollen samples, mature pollen grains were germinated in vitro according to a previously described pollen transcriptome study (Wang et al., 2008). In brief, pollen pellets were washed with 1 ml of liquid Pollen Germination Medium (PGM, composed of 15% (w/v) sucrose, 1.5 mM boric acid, 0.8 mM MgSO4, 1 mM KCl, 5 mM MES, 0.05% (w/v) lactalbumin hydrolysate, 10 µM myo-inositol, 5 mM CaCl2) before they were resuspended in 30 µl of liquid PGM and subsequently cultured in Petri dishes (35 mm in diameter). A 70 µm mesh was used to cover the pollen droplet to create a thin layer for optimal germination for each Petri dish. The Petri dishes were covered and placed in the dark for 45 min or 4 h and collected as hydrated pollen or germinated pollen, respectively.

Treatment ID:

TR002154

Treatment Summary:

For hydrated pollen and germinated pollen samples, mature pollen grains were germinated in vitro according to a previously described pollen transcriptome study (Wang et al., 2008). In brief, pollen pellets were washed with 1 ml of liquid Pollen Germination Medium (PGM, composed of 15% (w/v) sucrose, 1.5 mM boric acid, 0.8 mM MgSO4, 1 mM KCl, 5 mM MES, 0.05% (w/v) lactalbumin hydrolysate, 10 µM myo-inositol, 5 mM CaCl2) before they were resuspended in 30 µl of liquid PGM and subsequently cultured in Petri dishes (35 mm in diameter). A 70 µm mesh was used to cover the pollen droplet to create a thin layer for optimal germination for each Petri dish. The Petri dishes were covered and placed in the dark for 45 min or 4 h and collected as hydrated pollen or germinated pollen, respectively.