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Transcriptional responses of the marine diatom Chaetoceros tenuissimus to phosphate deficiency.
- Source :
-
Gene [Gene] 2023 Oct 30; Vol. 884, pp. 147695. Date of Electronic Publication: 2023 Aug 05. - Publication Year :
- 2023
-
Abstract
- The planktonic diatom Chaetoceros tenuissimus sometimes forms blooms in coastal surface waters where dissolved inorganic phosphorus (P) is typically deficient. To understand the molecular mechanisms for survival under P-deficient conditions, we compared whole transcripts and metabolites with P-sufficient conditions using stationary growth cells. Under P-deficient conditions, cell numbers and photosynthetic activities decreased as cells entered the stationary growth phase, with downregulation of transcripts related to the Calvin cycle and glycolysis/gluconeogenesis. Therefore, metabolites varied across nutritional conditions. Alkaline phosphatase, phosphodiesterase, phytase, phosphate transporter, and transcription factor genes were drastically upregulated under dissolved inorganic P deficiency. Genes related to phospholipid degradation and nonphospholipid synthesis were also upregulated. These results indicate that C. tenuissimus rearranges its membrane composition from phospholipids to nonphospholipids to conserve phosphate. To endure in P-deficient conditions, C. tenuissimus modifies its gene responses, suggesting a potential survival strategy in nature.<br />Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.<br /> (Copyright © 2023. Published by Elsevier B.V.)
- Subjects :
- Photosynthesis
Plankton
Phosphates metabolism
Phosphorus metabolism
Diatoms genetics
Subjects
Details
- Language :
- English
- ISSN :
- 1879-0038
- Volume :
- 884
- Database :
- MEDLINE
- Journal :
- Gene
- Publication Type :
- Academic Journal
- Accession number :
- 37549856
- Full Text :
- https://doi.org/10.1016/j.gene.2023.147695