Upadhyay Atul K, Mallick Shekhar, Singh Ranjan, Singh Lav, Singh Nitesh, Mandotra S K, Singh Arpit, Srivastava Ravi Prakash, Pandey Shivaraman, Saxena Gauri
Department of Environmental Science, School of Earth & Environmental Sciences, Babasaheb Bhimrao Ambedkar University, Lucknow, India.
Plant Ecology and Environmental Science, National Botanical Research Institute, Lucknow, India.
Front Microbiol. 2023 Jun 19;14:1170740. doi: 10.3389/fmicb.2023.1170740. eCollection 2023.
A novel laboratory model was designed to study the arsenic (As) biotransformation potential of the microalgae and sp. and the cyanobacterium . The Algae were treated under different concentrations of As(III) to check their growth, toxicity optimization, and volatilization potential. The results revealed that the alga sp. was better adopted in term of growth rate and biomass than and Algae grown under an As(III) environment can tolerate up to 200 μM As(III) with moderate toxicity impact. Further, the present study revealed the biotransformation capacity of the algae , sp., and . The microalga sp. volatilized a large maximum amount of As (4,393 ng), followed by (4382.75 ng) and (2687.21 ng) after 21 days. The present study showed that As(III) stressed algae-conferred resistance and provided tolerance through high production of glutathione content and As-GSH chemistry inside cells. Thus, the biotransformation potential of algae may contribute to As reduction, biogeochemistry, and detoxification at a large scale.
设计了一种新型实验室模型，以研究微藻和物种以及蓝藻的砷（As）生物转化潜力。藻类在不同浓度的As(III)下进行处理，以检查它们的生长、毒性优化和挥发潜力。结果表明，就生长速率和生物量而言，物种藻类比和藻类更能适应。在As(III)环境下生长的藻类能够耐受高达200μM的As(III)，且毒性影响适中。此外，本研究揭示了藻类、物种和的生物转化能力。微藻物种在21天后挥发了大量的As（4393 ng），其次是（4382.75 ng）和（2687.21 ng）。本研究表明，As(III)胁迫的藻类通过细胞内高含量的谷胱甘肽和As-GSH化学反应赋予抗性并提供耐受性。因此，藻类的生物转化潜力可能在大规模的As还原、生物地球化学和解毒过程中发挥作用。
