Effect of iron speciation on growth and heat resistance of Symbiodiniaceae

Autor(es)

Jose Miguel Diaz Romero ^[1] ; Marina Tonetti Botana ^[2] ; Aline de Carvalho Elias ^[3] ; Cassiana Seimi Nomura ^[4] ; Flávia Saldanha-Corrêa ^[5] ; Breno Pannia Espósito ^[6]

Afiliação do(s) autor(es)

^[1] Universidade de São Paulo. Instituto de Química. Departamento de Química Fundamental - Brasil

^[2] Universidade de São Paulo. Instituto Oceanográfico - Brasil

^[3] Universidade de São Paulo. Instituto de Química. Departamento de Química Fundamental - Brasil

^[4] Universidade de São Paulo. Instituto de Química. Departamento de Química Fundamental - Brasil

^[5] Universidade de São Paulo. Instituto Oceanográfico - Brasil

^[6] Universidade de São Paulo. Instituto de Química. Departamento de Química Fundamental - Brasil

• Tipo de documento: Artigo Científico
• Fonte: Ocean and Coastal Research; v. 70, 2022-05-06.

Resumo

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

• Processo FAPESP: 18/19684-0 - Aplicações de novos derivados de desferrioxamina com alta permeabilidade celular
• Beneficiário: Breno Pannia Esposito
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 21/10894-5 - Bioveiculadores de minerais para corais e zooxantelas
• Beneficiário: Breno Pannia Esposito
• Modalidade de apoio: Auxílio à Pesquisa - Regular