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MetabolomicsMetabolic adaptation of diatoms to hypersalinity

Microalgae are important primary producers and form the basis for the marine food web. As global climate changes, so do salinity levels that algae are exposed to. A metabolic response of algal cells partly alleviates the resulting osmotic stress. Some metabolites involved in the response are well...

2023-09-04 | MTBLS3177 | MetaboLights
MetabolomicsMetabolic consequences of cobalamin scarcity in diatoms as revealed through metabolomics (Thalassiosira pseudonana study)

Diatoms perform about 20% of photosynthesis on earth, play a crucial role in forming the base of the marine food web, and sequester anthropogenic carbon into the deep ocean through the biological pump. In some areas of the ocean, diatom growth is limited by the organic micronutrient cobalamin (vi...

2019-06-04 | MTBLS703 | MetaboLights
MetabolomicsMetabolic consequences of cobalamin scarcity in diatoms as revealed through metabolomics (Navicula pelliculosa study)

Diatoms perform about 20% of photosynthesis on earth, play a crucial role in forming the base of the marine food web, and sequester anthropogenic carbon into the deep ocean through the biological pump. In some areas of the ocean, diatom growth is limited by the organic micronutrient cobalamin (vi...

2019-06-04 | MTBLS708 | MetaboLights
MetabolomicsMetabolic profiling with UPLC-MS orbitrap of diatoms Coscinodiscus granii infected with parasitic oomycete Lagenisma coscinodisci
The bloom-forming diatoms Coscinodiscus granii were cultivated in a non-contact dual cultivation apparatus. This device allows the exchange of exudates, without transfer of any microorganisms, allowing the investigation of both endo- and exo-metabolome. The treatment consisted in infecting diatom ce...
2019-09-23 | MTBLS775 | MetaboLights
MetabolomicsA metabolomics exploration of the sexual phase in the marine diatom Pseudo-nitzschia multistriata
Pseudo-nitzschia multistriata is a planktonic diatom species with a diplontic life cycle comprising a short sexual phase during which gametes are produced from the encounter of two diploid cells of opposite mating type (MT). Gene expression studies have highlighted the presence of substantial change...
2020-06-29 | MTBLS1714 | MetaboLights
MetabolomicsPronounced uptake and metabolism of organic substrates by diatoms revealed by pulse-labeling metabolomics
Diatoms contribute as a major group of microalgae to approximately 20% of the global carbon fixation. In the plankton, these algae are exposed to a plethora of metabolites, especially when competing algae are lysed. In line with evidence that these phototrophs can also engage in heterotrophy we aske...
2021-12-09 | MTBLS2333 | MetaboLights
MetabolomicsThe metabolic response of marine copepods to environmental warming and ocean acidification in the absence of food
Marine copepods are central to the productivity and biogeochemistry of marine ecosystems. Nevertheless, the direct and indirect effects of climate change on their metabolic functioning remain poorly understood. Here, we use metabolomics, the unbiased study of multiple low molecular weight organic me...
2015-10-13 | MTBLS91 | MetaboLights
MetabolomicsHidden molecular clues in marine sediments revealed by untargeted mass spectrometry imaging

Mass spectrometry imaging (MSI) in sedimentary archives can produce records of molecular proxies at μm-scale resolution. For example, in annually varved sediments of the Santa Barbara Basin, such a fine resolution allows deciphering sub-annual distributions of archaeal tetraether lipids, haptophy...

2022-08-15 | MTBLS4609 | MetaboLights
MetabolomicsPhosphorus availability regulates intracellular nucleotides in marine eukaryotic phytoplankton
Phosphorus limitation is pervasive in the oligotrophic surface ocean and marine microorganisms use different strategies to survive, and thrive, at these low nutrient levels. Eukaryotic algae such as diatoms are extremely sensitive to phosphorus limitation and recent transcriptomics work has suggeste...
2015-01-27 | MTBLS154 | MetaboLights
TranscriptomicsMarine diatoms sense and respond to microscale turbulence in non-limiting nutrient conditions
According to the present theories, in nutrient-repleted conditions diatoms should not be affected by turbulence. We made laboratory experiments to demonstrate that two chain forming diatoms sense and respond to turbulence by varying their chain length spectra and tuning their metabolism. We compared...
ORGANISM(S): Chaetoceros decipiens 
2017-05-03 | E-MTAB-5031 | biostudies-arrayexpress
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