Metatranscriptomic and metabolite profiling reveals vertical heterogeneity within a Zygnema green algal mat from Svalbard (High Arctic)
Within streptophyte green algae Zygnematophyceae are the sister group to the land plants that inherited several traits conferring stress protection. Zygnema sp., a mat-forming alga thriving in extreme habitats, was collected from a field site in Svalbard, where the bottom layers are protected by the...
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ftubkoeln:oai:USBKOELN.ub.uni-koeln.de:14150 2023-05-15T14:27:05+02:00 Metatranscriptomic and metabolite profiling reveals vertical heterogeneity within a Zygnema green algal mat from Svalbard (High Arctic) Rippin, Martin Pichrtova, Martina Arc, Erwann Kranner, Ilse Becker, Burkhard Holzinger, Andreas 2019 https://kups.ub.uni-koeln.de/14150/ eng eng WILEY Rippin, Martin orcid:0000-0003-4362-0122 , Pichrtova, Martina orcid:0000-0002-6003-9666 , Arc, Erwann, Kranner, Ilse orcid:0000-0003-4959-9109 , Becker, Burkhard orcid:0000-0002-7965-1396 and Holzinger, Andreas orcid:0000-0002-7745-3978 (2019). Metatranscriptomic and metabolite profiling reveals vertical heterogeneity within a Zygnema green algal mat from Svalbard (High Arctic). Environ. Microbiol., 21 (11). S. 4283 - 4300. HOBOKEN: WILEY. ISSN 1462-2920 ddc:no doc-type:article publishedVersion 2019 ftubkoeln 2022-11-09T07:14:24Z Within streptophyte green algae Zygnematophyceae are the sister group to the land plants that inherited several traits conferring stress protection. Zygnema sp., a mat-forming alga thriving in extreme habitats, was collected from a field site in Svalbard, where the bottom layers are protected by the top layers. The two layers were investigated by a metatranscriptomic approach and GC-MS-based metabolite profiling. In the top layer, 6569 genes were significantly upregulated and 149 were downregulated. Upregulated genes coded for components of the photosynthetic apparatus, chlorophyll synthesis, early light-inducible proteins, cell wall and carbohydrate metabolism, including starch-degrading enzymes. An increase in maltose in the top layer and degraded starch grains at the ultrastructural levels corroborated these findings. Genes involved in amino acid, redox metabolism and DNA repair were upregulated. A total of 29 differentially accumulated metabolites (out of 173 identified ones) confirmed higher metabolic turnover in the top layer. For several of these metabolites, differential accumulation matched the transcriptional changes of enzymes involved in associated pathways. In summary, the findings support the hypothesis that in a Zygnema mat the top layer shields the bottom layers from abiotic stress factors such as excessive irradiation. Article in Journal/Newspaper Arctic Arctic Svalbard Cologne University: KUPS Arctic Svalbard |
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English |
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ddc:no Rippin, Martin Pichrtova, Martina Arc, Erwann Kranner, Ilse Becker, Burkhard Holzinger, Andreas Metatranscriptomic and metabolite profiling reveals vertical heterogeneity within a Zygnema green algal mat from Svalbard (High Arctic) |
topic_facet |
ddc:no |
description |
Within streptophyte green algae Zygnematophyceae are the sister group to the land plants that inherited several traits conferring stress protection. Zygnema sp., a mat-forming alga thriving in extreme habitats, was collected from a field site in Svalbard, where the bottom layers are protected by the top layers. The two layers were investigated by a metatranscriptomic approach and GC-MS-based metabolite profiling. In the top layer, 6569 genes were significantly upregulated and 149 were downregulated. Upregulated genes coded for components of the photosynthetic apparatus, chlorophyll synthesis, early light-inducible proteins, cell wall and carbohydrate metabolism, including starch-degrading enzymes. An increase in maltose in the top layer and degraded starch grains at the ultrastructural levels corroborated these findings. Genes involved in amino acid, redox metabolism and DNA repair were upregulated. A total of 29 differentially accumulated metabolites (out of 173 identified ones) confirmed higher metabolic turnover in the top layer. For several of these metabolites, differential accumulation matched the transcriptional changes of enzymes involved in associated pathways. In summary, the findings support the hypothesis that in a Zygnema mat the top layer shields the bottom layers from abiotic stress factors such as excessive irradiation. |
format |
Article in Journal/Newspaper |
author |
Rippin, Martin Pichrtova, Martina Arc, Erwann Kranner, Ilse Becker, Burkhard Holzinger, Andreas |
author_facet |
Rippin, Martin Pichrtova, Martina Arc, Erwann Kranner, Ilse Becker, Burkhard Holzinger, Andreas |
author_sort |
Rippin, Martin |
title |
Metatranscriptomic and metabolite profiling reveals vertical heterogeneity within a Zygnema green algal mat from Svalbard (High Arctic) |
title_short |
Metatranscriptomic and metabolite profiling reveals vertical heterogeneity within a Zygnema green algal mat from Svalbard (High Arctic) |
title_full |
Metatranscriptomic and metabolite profiling reveals vertical heterogeneity within a Zygnema green algal mat from Svalbard (High Arctic) |
title_fullStr |
Metatranscriptomic and metabolite profiling reveals vertical heterogeneity within a Zygnema green algal mat from Svalbard (High Arctic) |
title_full_unstemmed |
Metatranscriptomic and metabolite profiling reveals vertical heterogeneity within a Zygnema green algal mat from Svalbard (High Arctic) |
title_sort |
metatranscriptomic and metabolite profiling reveals vertical heterogeneity within a zygnema green algal mat from svalbard (high arctic) |
publisher |
WILEY |
publishDate |
2019 |
url |
https://kups.ub.uni-koeln.de/14150/ |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Arctic Svalbard |
genre_facet |
Arctic Arctic Svalbard |
op_relation |
Rippin, Martin orcid:0000-0003-4362-0122 , Pichrtova, Martina orcid:0000-0002-6003-9666 , Arc, Erwann, Kranner, Ilse orcid:0000-0003-4959-9109 , Becker, Burkhard orcid:0000-0002-7965-1396 and Holzinger, Andreas orcid:0000-0002-7745-3978 (2019). Metatranscriptomic and metabolite profiling reveals vertical heterogeneity within a Zygnema green algal mat from Svalbard (High Arctic). Environ. Microbiol., 21 (11). S. 4283 - 4300. HOBOKEN: WILEY. ISSN 1462-2920 |
_version_ |
1766300645895176192 |