ArticleBiotechnology for biofuels and bioproducts2026
Iron accumulation dynamics in Nostoc sp. PCC 7120: extent of biosorption in batch and continuous reactors.
Article in Biotechnology for biofuels and bioproducts, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundMicroalgae have recently gained attention for their ability to incorporate iron into organic molecules, potentially enhancing bioavailability and mitigating associated risks, suggesting a promising role in the field of iron supplementation. Among microalgal species, nitrogen-fixing organisms present a relatively high iron demand due to their unique metabolic requirements, positioning them as promising candidates for addressing iron deficiencies. However, information on the dynamics and extent of iron accumulation in diazotrophic cyanobacteria remains limited. Understanding how these organisms regulate iron uptake and storage under different cultivation conditions is essential to evaluate their potential for nutritional and biotechnological applications.
resultsThis work investigates the iron accumulation dynamics of the diazotrophic species Nostoc sp. PCC 7120 under both batch and continuous systems. The results highlight its ability to adapt and survive across a wide range of iron concentration and demonstrate a strong correlation between iron availability and the internal quota of iron in biomass. High-density batch cultivation revealed that the iron content in Nostoc sp. can span a remarkably wide range, up to tens of thousands of mg
conclusionsNostoc sp. PCC 7120 exhibits an exceptional capacity to tolerate and accumulate iron over a broad concentration range, mediated by both intracellular uptake and extracellular adsorption. These findings reveal that diazotrophic cyanobacteria can effectively modulate their iron management strategies under different regimes and highlight their potential as biofactories for iron-enriched biomass and as model systems for studying biologically driven metal sequestration.
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