在Saccharomyces cerevisiae中使用适应性实验室进化发现了用于furfural降解的新菌株
Hanyu Wang1, Qian Li2, Zhengyue Zhang2
1Institute of Resources and Geographic Information Technology, College of Resources, Sichuan Agricultural University, Wenjiang, Chengdu, Sichuan 611130, China; College of Life Science, Leshan Normal University, Leshan, Sichuan 614000, China; Bamboo Diseases and Pests Control and Resources Development Key Laboratory of Sichuan Province, College of Life Science, Leshan Normal University, Leshan, Sichuan 614000, China.
Journal of hazardous materials
|July 22, 2023
概括
研究人员开发了新的Saccharomyces cerevisiae菌株,YBA_08和F60C,用于在水中有效降解furfural. 这些菌株表现出对环境清洁和生物炼油应用的增强能力.
科学领域:
- 环境微生物学环境微生物学
- 生物技术是生物技术.
- 生物修复是一种生物修复.
背景情况:
- 工业生产中的furfural排放有害于生态系统和人类健康.
- 有效且具有成本效益的毛素降解方法对于环境保护至关重要.
- 糖菌 (Saccharomyces cerevisiae) 对于毛的降解有前途,但效率和耐受性需要改进.
研究的目的:
- 隔离和演化高效的Saccharomyces cerevisiae的皮性降解菌株.
- 研究进化菌株中增强毛皮素降解背后的机制.
- 评估这些菌株在环境修复和生物炼油应用中的潜力.
主要方法:
- 隔离和进化Saccharomyces cerevisiae菌株的毛性降解.
- 随着时间的推移,对furfural降解百分比的定量分析.
- 细胞内代谢物 (NADH,NADPH,谷氨) 和基因表达的生物化学分析.
- 鉴定与细胞周期和细胞壁合成相关的突变.
主要成果:
- 进化菌株YBA_08和F60C分别降解了59%和99%的furfural,显著优于模型菌株S288C (31%).
- 菌株F60C的NADH和NADPH含量增加了326%,这与通过aldehyde降解酶增强的furfural降解有关.
- 观察到谷氨酸增加了406%,与降低的NADPH相关,并提供对活性氧物种的保护.
- 鉴定了细胞周期和细胞壁合成途径中的突变和差异性基因表达,有助于细胞存活和恢复.
结论:
- 进化的Saccharomyces cerevisiae菌株YBA_08和F60C表现出优越的毛皮腐蚀能力.
- 增加的细胞内共因子 (NADH,NADPH) 和谷氨在增强的降解和细胞保护机制中起着关键作用.
- 这些菌株在水生环境中具有重要的毛皮修复潜力,并在生物炼油厂生产有价值的化学物质.
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