纯种植物的隔离和表征,以在寡质环境中代谢1,4-二氧化
Ermias Gebrekrstos Tesfamariam1, Dennis Ssekimpi1, Sarajeen Saima Hoque1
1Department of Civil and Environmental Engineering, FAMU-FSU College of Engineering, Florida State University, Tallahassee, Florida 32310, USA.
概括
这项研究分离了能够在低度污染水中壮成长的新型1,4-二氧化代谢细菌. 这些新菌株表现出增强的生长和降解效率,为生物修复提供了有希望的解决方案.
科学领域:
- 环境微生物学环境微生物学
- 生物修复是一种生物修复.
- 水的质量 水的质量
背景情况:
- 水体中的1,4-二氧化污染通常发生在1 mg/L以下的度.
- 现有的1,4-二氧化代谢纯种植物需要高度的基质来生长,这限制了它们的应用.
- 以往使用高度的隔离策略可能忽略了适应寡头性条件的微生物.
研究的目的:
- 开发一种新的策略,以隔离低度有效的1,4-二氧化代谢微生物.
- 为了对新分离的细菌菌株及其1,4-二氧化降解能力进行表征.
- 为了评估这些菌株的表现与以前报告的培养相比.
主要方法:
- 混合微生物培养的丰富,使用定期 1,4-二氧化在低度 (≤1 mg/L).
- 五种纯细菌菌株 (LCD6B,LCD6D,WC10G,WCD6H,WD4H) 的分离和表征.
- 部分16S rRNA基因测序用于分类识别.
- 确定动力参数,包括生长速度,半极速度,最大利用率,生物质产量和衰变系数.
主要成果:
- 成功分离了五种与*Dokdonella*,*Acinetobacter*,*Afipia*,*Nitrobacter*和*Pseudonocardia*物种相关的纯菌株.
- * 亚菌种* sp. 在 WCD6H代表了第一个报告的1,4-二氧化代谢细菌在这个属内.
- 与文献相比,孤立的菌株在低度的1,4-二氧化 (<0.5 mg/L) 中显示出更高的净特异性生长率.
- 新发现的菌株表现出较低的半最大度,较低的最大特异性利用率,较高的生物质产量和较低的衰变系数,表明了寡质适应.
结论:
- 一种新的丰富策略有效地隔离了适应低度环境的1,4-二氧化降解细菌.
- 新发现的菌株具有优越的特点,可以对被1,4-二氧化污染的水进行生物修复.
- 这些发现为开发高效的水处理技术提供了有希望的微生物候选者.
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