通过A-3 Pseudomonas putida生物降解Difenoconazole的途径解和关键酶性过程
Yi Zhou1, Liping Wang1, Jingyi Sui1
1Key Laboratory of Sustainable Utilization of Panax Notoginseng Resources of Yunnan Province, Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan 650500, China.
Journal of agricultural and food chemistry
|January 23, 2025
概括
一种新型细菌,Pseudomonas putida A-3,可以有效降解杀菌剂二可纳 (DIF). 这一发现为从污染环境中去除有害的DIF残留物提供了一个有希望的生物解决方案.
科学领域:
- 环境微生物学环境微生物学
- 生物修复技术 生物修复技术
- 杀菌剂的生物降解方法
背景情况:
- 对生态系统和人类健康构成风险的广泛农业使用difenoconazole (DIF).
- 有效地去除DIF残留物需要环保的技术解决方案.
研究的目的:
- 隔离和描述能够降解DIF的微生物.
- 为了阐明生物降解途径,并评估降解产品的毒性.
- 评估已识别的菌株对生物修复的潜力.
主要方法:
- 隔离和查DIF降解细菌.
- 优化降解条件和速率的确定.
- 降解途径中间体的识别.
- 使用ECOSAR软件进行毒性评估.
- 全基因组测序,RT-qPCR和分子对接用于酶预测.
主要成果:
- 隔离的Pseudomonas putida A-3作为一种新型,高效的DIF降解菌株.
- 在条件优化后实现了75.98%的降解率.
- 阐明了一种新的DIF降解途径,包括化,水解,脱和以太键断裂.
- DIF降解产品的毒性低于原始化合物.
- 确定了六种可能参与DIF生物降解的关键酶.
结论:
- Pseudomonas putida A-3 是DIF污染环境的生物修复的有力候选者.
- 这项研究揭示了DIF生物降解的新途径.
- 这项研究为开发微生物策略以减轻杀菌剂污染提供了基础.
相关概念视频
Environmental Applications of Microorganisms
1.5K
Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...
1.5K
Gene Regulation in Microbial Communities: Quorum Sensing
912
Quorum sensing is a mechanism of bacterial communication that enables coordinated gene expression in response to changes in population density. This facilitates collective behaviors that enhance survival, resource acquisition, and ecological adaptation. This process relies on small signaling molecules called autoinducers that accumulate as bacterial populations grow. When a critical threshold concentration of autoinducers is reached, bacterial cells collectively modify gene expression,...
912
Microbial Bioremediation of Hydrocarbons
82
Bioremediation is an environmentally sustainable process that employs living organisms—primarily microorganisms—to degrade or neutralize pollutants from contaminated environments. In oil spills and hydrocarbon pollution, bioremediation involves the use of hydrocarbon-degrading bacteria to transform toxic compounds into less harmful substances. This approach leverages natural microbial metabolic processes and is considered both cost-effective and ecologically favorable compared to...
82
Microbial Bioremediation of Pesticides
67
Pesticides often feature structurally complex chemical architectures, incorporating halogen groups and multiple aromatic rings. These characteristics confer high chemical stability, rendering many pesticides resistant to natural degradation processes. This resistance poses significant environmental concerns, as persistent pesticide residues can accumulate in ecosystems and affect non-target organisms.Despite the inherent stability of many pesticides, certain microorganisms possess the metabolic...
67
Bioplastics
50
Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...
50
Microbial Bioremediation of Plastics
91
Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...
91


