MassIVE MSV000097253

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GNPS - 20250306_Antarctic_Ulva_Metabolomics

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Description

The algal holobiont, which consists of algae and the bacteria living on it, has developed strategies to handle environmental stresses, such as changes in temperature. The green alga Ulva (Chlorophyta) is home to bacteria that help the algae grow and develop, from germlings to mature plants. These bacteria release chemicals like thallusin, N-acyl homoserine lactone, and ectoine, which support the health and growth of the algae. However, there is limited research on the metabolome of cold-adapted Ulva holobionts, especially those from hard-to-reach regions like Antarctica, and how they respond to environmental changes. In this study, we examine the metabolites found in Ulva and its associated bacteria from Antarctica (Potter Cove) using high-resolution mass spectrometry. We identified small polar and zwitterionic metabolites, such as cysteinolic acid, ectoine, glutamine, glycerol, and proline, in the surface tissues of the algae with MALDI-MS. By profiling these metabolites using UHPLC-HRMS and ZIC-HILIC chromatography, we found that their levels change significantly in response to heat-stressed Antarctic Ulva holobionts. Our results suggest that environmental change can affect the interaction between seaweeds and their microbes by altering the metabolites involved in their chemical exchanges. The Data contains the Ulva metabolome profiles (.mzXML) analyzed using ZIC-HILIC chromatography coupled with HRMS (QExactive). Acquisition was conducted with the polarity switch mode and ddMS acquisition was done on the QC pool samples. The Metadata, normalization factor and results files from CD 3.3 can be found in the supplementary files. [doi:10.25345/C5R20S823] [dataset license: CC0 1.0 Universal (CC0 1.0)]

Keywords: Seaweed ; Holobiont ; Ulva ; Antarctic ; MALDI-MS ; LCMS ; ZIC-HILIC chromatography ; Bacteria ; Ectoine ; Glycerol ; Heat Stress ; DatasetType:Metabolomics

Contact

Principal Investigators:
(in alphabetical order) 		Dr. Marine Vallet, Friedrich Schiller University Jena, Max Planck Institute for Chemical Ecology, Germany
Submitting User: MarineValletMPICE
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GNPS content goes here (MSV000097253 [task=005ce2afdb554e4a9396f74c161a6771])
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