Growth rate hypothesis and efficiency of protein synthesis under different sulphate concentrations in two green algae
Language English Country United States Media print-electronic
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
25851030
DOI
10.1111/pce.12551
Knihovny.cz E-resources
- Keywords
- RNA, growth, phosphorus, sulphate,
- MeSH
- Chlorophyta growth & development metabolism MeSH
- Nitrogen metabolism MeSH
- Seawater chemistry MeSH
- Oceans and Seas MeSH
- Protein Biosynthesis * MeSH
- Ribosomes metabolism MeSH
- RNA metabolism MeSH
- Sulfates metabolism MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Geographicals
- Oceans and Seas MeSH
- Names of Substances
- Nitrogen MeSH
- RNA MeSH
- Sulfates MeSH
The growth rate hypothesis (GRH) predicts a positive correlation between growth rate and RNA content because growth depends upon the protein synthesis machinery. The application of this hypothesis to photoautotrophic organisms has been questioned. We tested the GRH on one prasinophycean, Tetraselmis suecica, and one chlorophycean, Dunaliella salina, grown at three sulphate concentrations. Sulphate was chosen because its concentration in the oceans increased through geological time and apparently had a role in the evolutionary trajectories of phytoplankton. Cell protein content and P quota were positively related to the RNA content (r = 0.62 and r = 0.74, respectively). The correlation of the RNA content with growth rates (r = 0.95) indicates that the GRH was valid for these species when growth rates were below 0.82 d(-1) .
References provided by Crossref.org
Effect of sulfate availability on phytoplankton stoichiometry
