euryhaline

Edge evidence

• wide salinity range defines euryhaline METPO:2007500

  Euryhaline organisms tolerate or grow across broad salinity ranges.

  • DOI:10.5928/kaiyou.14.337 growing over a salinity range of 15% Communication proposes a quantitative characterization for euryhaline halophiles.
• salinity gradient selects for euryhaline METPO:2007401

  Variable salinity environments select for broad salinity tolerance.

  • DOI:10.1186/s40168-024-01817-w salinity gradient of a typical short residence-time estuary Estuary metagenome study uses salinity gradients to analyze microbial salinity adaptation.
• salinity gradient causes osmotic imbalance biolink:causes

  Movement across salinity gradients changes osmotic pressure on the cell.

  • DOI:10.1186/s40168-024-01817-w water immediately rushes into the cell Supports osmotic imbalance and water flux during salinity change.
• compatible-solute transport imports compatible solutes METPO:2000208

  Euryhaline tolerance can use flexible uptake of osmoprotectants.

  • DOI:10.1016/j.csbj.2021.01.030 biosynthesis and/or uptake of compatible solutes Review supports compatible-solute uptake and biosynthesis as bacterial salt-stress responses.
• compatible solutes mitigates osmotic imbalance METPO:2007407

  Compatible solutes help balance external osmotic pressure across changing salinity.

  • DOI:10.1186/1746-1448-1-5 balance external osmotic pressure Supports compatible solutes as osmolytes under salinity stress.
• salinity-adaptation genes contributes to euryhaline RO:0002326

  Salinity-adaptation gene repertoires contribute to broad salinity tolerance.

  • DOI:10.1186/s40168-024-01817-w genes associated with microbial salinity adaptation Supports salinity-adaptation genes as contributors to microbial salinity niche breadth.
• glycine betaine biosynthesis produces glycine betaine METPO:2000202

  Choline is oxidized to glycine betaine in two steps by BetA and BetB.

  • DOI:10.3389/fmicb.2023.1192059 Choline is transformed into glycine betaine in two oxidative steps carried out by BetA (K00108) and BetB (K00130).
• choline is precursor of glycine betaine

  Choline serves as the substrate for glycine betaine biosynthesis.

  • DOI:10.3389/fmicb.2023.1192059 Choline is transformed into glycine betaine in two oxidative steps (BetA/BetB).
• glycine betaine mitigates osmotic imbalance METPO:2007407

  Glycine betaine accumulates as a compatible solute to balance osmotic pressure.

  • DOI:10.3389/fmicb.2023.1192059 Glycine betaine is a compatible solute used in the salt-out osmoadaptation strategy.
• ectoine biosynthesis produces ectoine METPO:2000202

  Ectoine is synthesized from L-aspartate in five steps (lysC/asd/ectB/ectA/ectC).

  • DOI:10.3389/fmicb.2023.1192059 Ectoine is obtained from L-aspartate in five steps mediated by lysC, asd, ectB, ectA, and ectC.
• ectoine mitigates osmotic imbalance METPO:2007407

  Ectoine acts as an osmoprotective compatible solute under salinity stress.

  • DOI:10.3389/fmicb.2023.1192059 Ectoine widely implicated in halophily and salinity tolerance; protects cell components under stress.
• mechanosensitive channels (Msc) responds to osmotic downshock

  Msc channels serve as safety valves releasing ions and organic solutes during sudden downward osmotic shocks.

  • DOI:10.3390/microorganisms12081738 Msc mechanosensitive channels serve as safety valves, allowing the rapid release of ions and organic solutes in the case of sudden downward osmotic shocks.
• Na+/H+ antiporter exports cytoplasmic sodium ions METPO:2000209

  Na+/H+ antiporters expel sodium ions from the cytoplasm to maintain ion homeostasis.

  • DOI:10.3390/microorganisms12081738 Sodium ions are expelled from the cytoplasm, usually performed with the help of Na+/H+ antiporters.
• proteome acidification contributes to euryhaline RO:0002326

  Acidification of the proteome improves protein solubility across salinity regimes.

  • DOI:10.1126/sciadv.adg2059 Increase in acidic amino acids (notably glutamate); acidification of the proteome essential for protein solubility at higher ionic strength.