首页|芽胞杆菌耐受胁迫条件的机制及工业应用

芽胞杆菌耐受胁迫条件的机制及工业应用

扫码查看
芽胞杆菌作为一种极具潜力的底盘菌株,能够在多种工农业废物和极端环境中生长,也能生产出多种工业化产品,如食品、饲料、益生菌、植物生长促进剂、酶和生物活性化合物等.然而,尽管具有生产高效、成本低廉等优点,芽胞杆菌在发酵生产中依然存在几个瓶颈问题,导致其工业生产的巨大潜力难以得到充分利用.其中一个关键问题在于,发酵生产过程中的生长以及生产效率较易受到多种胁迫条件的限制,进而导致发酵生产的不彻底、不完全.因此,探究芽胞杆菌胁迫响应的影响因子及改造策略,发掘其多种代谢活动与生长性状间的联系,就可以增强芽胞杆菌的抗胁迫能力,进而提高芽胞杆菌在工业应用中的质与量.本文首先分析了芽胞杆菌的多种应激反应机制,为进一步提高芽胞杆菌胁迫耐受能力、构建一个高效生产且具有良好抗逆性能的底盘菌株,总结阐述了非理性设计筛选抗性菌株的多种策略,以及抗逆基因线路和高耐受性微生物底盘的多种构建方法.为推动芽胞杆菌胁迫耐受机制的研究及工业应用领域的拓展提供策略和思路.
Mechanism and Industrial Application of Bacillus Tolerance to Stress Conditions
Bacillus,as a highly potential chassis strain,can grow in various industrial and agricultural waste and extreme conditions.They can also produce a variety of industrial products such as food,feed,probiotics,plant growth promoters,enzymes,and bioactive compounds.However,despite their advantages in efficient production and low cost,Bacillus still face several bottlenecks in fermentation production,limiting the full exploitation of their industrial potential.One of the key issues is that the growth and production efficiency during fermentation are easily restricted by various stress conditions,leading to incomplete and inefficient fermentation production.Therefore,exploring the influencing factors and modification strategies of Bacillus stress response,and exploring the relationship between its various metabolic activities and growth traits,can enhance the tolerance of Bacillus to stress and improve their quality and quantity in industrial applications.This article first analyzes the various stress response mechanisms of Bacillus,aiming to further enhance its stress tolerance and to construct a high-efficiency production strain with excellent resistance,and then summarizes the irrational design strategies for screening resistant strains.It also elaborates on the construction methods of stress-resistant gene circuits and high-tolerance microbial chassis.These efforts provide strategies and insights to advance research on stress tolerance mechanisms in Bacillus and expand its industrial applications.

Bacillustolerance to stressmodification strategyindustrial applications

韩钟娆、霍毅欣、郭淑元

展开 >

北京理工大学,北京 100081

芽胞杆菌 胁迫耐受 改造策略 工业应用

唐山市科技计划项目国家自然科学基金面上项目

23130228E32370095

2024

生物技术通报
中国农业科学院农业信息研究所

生物技术通报

CSTPCD北大核心
影响因子:0.505
ISSN:1002-5464
年,卷(期):2024.40(8)