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Marine diatoms change their gene expression profile when exposed to microscale turbulence under nutrient replete conditions
- Source :
- Scientific Reports, Scientific Reports, 2016, 7 (1), pp.347A-348A. ⟨10.1038/s41598-017-03741-6⟩, Scientific Reports, Nature Publishing Group, 2017, 7 (1), pp.3826, Scientific Reports 1 (7), 1-11. (2017), Scientific Reports, Vol 7, Iss 1, Pp 1-11 (2017), Scientific Reports, Nature Publishing Group, 2016, 7 (1), pp.347A-348A. ⟨10.1038/s41598-017-03741-6⟩
- Publication Year :
- 2016
- Publisher :
- HAL CCSD, 2016.
-
Abstract
- Diatoms are a fundamental microalgal phylum that thrives in turbulent environments. Despite several experimental and numerical studies, if and how diatoms may profit from turbulence is still an open question. One of the leading arguments is that turbulence favours nutrient uptake. Morphological features, such as the absence of flagella, the presence of a rigid exoskeleton and the micrometre size would support the possible passive but beneficial role of turbulence on diatoms. We demonstrate that in fact diatoms actively respond to turbulence in non-limiting nutrient conditions. TURBOGEN, a prototypic instrument to generate natural levels of microscale turbulence, was used to expose diatoms to the mechanical stimulus. Differential expression analyses, coupled with microscopy inspections, enabled us to study the morphological and transcriptional response of Chaetoceros decipiens to turbulence. Our target species responds to turbulence by activating energy storage pathways like fatty acid biosynthesis and by modifying its cell chain spectrum. Two other ecologically important species were examined and the occurrence of a morphological response was confirmed. These results challenge the view of phytoplankton as unsophisticated passive organisms.
- Subjects :
- 0106 biological sciences
0301 basic medicine
Fatty acid biosynthesis
Enzymatic activities
[SDV]Life Sciences [q-bio]
diatomée
biosynthèse
Thalassiosira rotula
01 natural sciences
Nutrient
Settore BIO/13 - Biologia Applicata
Microscale chemistry
Small scale turbulence
Genome
Multidisciplinary
acide gras
analyse morphologique
Turbulence
Ecology
analyse transcriptionnelle
Plankton
Chaetoceros decipiens
Skeletonema marinoi
expression différentielle
Turbulence effects
Ultrastructure
Metabolic pathways
Medicine
Autre (Sciences du Vivant)
Morphology
Science
Phytoplankton, Diatom, Chaetoceros decipiens, Thalassiosira rotula, Skeletonema marinoi, Turbulence effects, Morphology, Ultrastructure, Gene expression, Transcriptome, Metabolic pathways, Lipid metabolism, Fatty acid biosynthesis, Enzymatic activities
Biology
Flagellum
Article
03 medical and health sciences
Phytoplankton
[SDV.BV]Life Sciences [q-bio]/Vegetal Biology
[SDV.BBM]Life Sciences [q-bio]/Biochemistry, Molecular Biology
14. Life underwater
Diatoms
phytoplancton
010604 marine biology & hydrobiology
turbulence
fungi
Diatom
biology.organism_classification
Lipid metabolism
030104 developmental biology
Gene Expression Regulation
Gene expression
Transcriptome
Subjects
Details
- Language :
- English
- ISSN :
- 20452322
- Database :
- OpenAIRE
- Journal :
- Scientific Reports, Scientific Reports, 2016, 7 (1), pp.347A-348A. ⟨10.1038/s41598-017-03741-6⟩, Scientific Reports, Nature Publishing Group, 2017, 7 (1), pp.3826, Scientific Reports 1 (7), 1-11. (2017), Scientific Reports, Vol 7, Iss 1, Pp 1-11 (2017), Scientific Reports, Nature Publishing Group, 2016, 7 (1), pp.347A-348A. ⟨10.1038/s41598-017-03741-6⟩
- Accession number :
- edsair.doi.dedup.....9eda77b83f929dcba4e9fc66a80655c3