ArticleBiotechnology and applied biochemistry2026
Adaptive and Biochemical Responses of Dictyosphaerium sp. AM-2024a to Environmental Conditions and Microplastic Interactions: Synergy of Biofuel Production With Pollution Mitigation.
Article in Biotechnology and applied biochemistry, 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
This study investigates the physiological and biochemical responses of a newly isolated microalgal strain, Dictyosphaerium sp. AM-2024a, identified through 18S rDNA sequencing, under varying environmental conditions and microplastic (MP) interactions. Optimal growth of strain AM-2024a was achieved at pH 9, with a 3.55% increase in biomass compared to the control. Sodium bicarbonate supplementation at 50 mM significantly enhanced productivity, with biomass increasing by 45.17%, chlorophyll a by 393.56%, and carbohydrates by 146.42%. This is the first report exploring the interaction of this strain with MPs, specifically low-density polyethylene (LDPE), selected for its environmental prevalence and relevance to aquatic pollution. Exposure to LDPE MPs resulted in a concentration-dependent reduction in biomass (up to 13.95% at 50 mg/L), whereas further analysis indicated the strain's ability to utilize LDPE as part of its metabolic processes. Gas chromatography-mass spectrometry (GC-MS) analysis of fatty acid methyl esters (FAMEs) revealed a favorable lipid profile, dominated by C16 and C18 fatty acids, yielding 84.75% FAMEs, underscoring the strain's potential for sustainable biodiesel production. This study highlights Dictyosphaerium sp. AM-2024a as a novel and robust candidate for biofuel applications and pollutant mitigation, providing a foundation for future research into its ecological and industrial applications.
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