Impact of arsenate on the growth and metabolism of cyanobacterial strains isolated from gold-mining areas

• DOI: 10.1007/s42452-024-05966-3
• Publication Date: 2024-05-25T14:01:42Z
• Authors: Ifeyinwa S. Obuekwe; Marcelo G. M. V. Vaz; Renato Veloso; Jaime V. Mello; Chimezie J. Ogugbue
• Keywords: 0301 basic medicine; 03 medical and health sciences

Abstract Four cyanobacterial strains isolated from arsenic (As) contaminated area in Minas Gerais, Brazil namely: Pseudanabaena spp. CCM-UFV063 and CCM-UFV065, Tolypothrix sp CCM-UFV067 , Desmonostoc sp. CCM-UFV070 were grown on BG-11 0 culture media respectively supplemented with di-sodium hydrogen arsenate heptahydrate (As 5+ ) at concentrations of 0, 1, 10, 100, 1000 5000 mg L −1 . The growth was measured by means optical density daily for seven (7) days. Contents chlorophyll a carbohydrates, protein, amino acids also evaluated. Fluorescence Spectroscopy ICP-OES used to quantify As cells. cellular growth, based OD 750nm significantly lower ( P < 0.05) As. Chlorophyll carbohydrates protein contents lowest Amino Acid content studied cyanobacteria varied higher except CCM-UFV065. Similarly, cells accumulation dependent concentration showed the order > 100 10 1 All ability absorb As(V) especially CCM-UFV065 could all be potential isolates bioremediation As-contaminated waters.