Effect of iron speciation on growth and heat resistance of Symbiodiniaceae

Iron is a limiting nutrient for Symbiodiniaceae (colloquially known as zooxanthellae), with low solubility in seawater. The use of stable, soluble, and chemically defined iron complexes proposed strategy to control the supply this metal target organisms. In work, we investigated effect iron(II) derivatives iron(III) (desferrioxamine, deferiprone, deferasirox, HBED) over growth loading five species. supplementation did not affect or load species high stocks. contrast, stocks, hydrophobic Fe(DFX)2 was very efficient inducing loading. Also, desferrioxamine derivative Fe(DFO) appeared an interesting, ecologically friendly source nutrient. on Breviolum minutum submitted heat shock also studied. prior episode increased tolerance B. minutum. Such findings provide new insights improve fitness Symbiodiniaceae, both vitro environment.