Wu Shijie, Wang Fuwen, Wang Hong, Shen Cong, Yu Kaiqiang
College of Resources and Environment and Life Sciences, Ningxia Normal University, Guyuan 756000, China.
Key Laboratory of Soil Ecological Health and Microbial Regulation, Ningxia Normal University, Guyuan 756000, China.
Metabolites. 2025 Feb 14;15(2):131. doi: 10.3390/metabo15020131.
: cyanobacterial exopolysaccharides (EPSs) exhibit diverse biological and physicochemical properties, making them valuable for applications in environmental remediation, soil improvement, wastewater treatment, and bioenergy production. : the production of cyanobacterial EPSs is significantly influenced by various factors, including abiotic factors and strains. Recent research has focused on optimizing EPS production by regulating key abiotic factors such as light, temperature, pH, and nutritional conditions. This review systematically compiles and analyzes published data on the effects of abiotic factors on cyanobacterial EPS biosynthesis, with a focus on genus-specific responses. Using meta-analysis techniques, we provide a comprehensive overview of the key factors influencing EPS production. Light and nutrient conditions are the most significant factors affecting EPS production, with high light intensities and optimal nutrient conditions enhancing EPS synthesis. Optimal temperature ranges and pH levels are essential for maximizing EPS production, and cyanobacteria exhibit genus-specific responses to variations in these factors. The addition of specific nutrients, such as NaCl, trace metals (e.g., Mg, Zn, Cu), and elevated CO levels, significantly impacts EPS production. : the response to these factors varies among different cyanobacterial genera, highlighting the need for genus-specific optimization strategies. This review provides a theoretical basis for optimizing EPS production across diverse cyanobacterial genera and for understanding multi-factor interactions and practical applications in future research.
蓝藻胞外多糖（EPSs）具有多种生物学和物理化学特性，使其在环境修复、土壤改良、废水处理和生物能源生产等应用中具有重要价值。蓝藻EPSs的产生受到多种因素的显著影响，包括非生物因素和菌株。最近的研究集中在通过调节光照、温度、pH值和营养条件等关键非生物因素来优化EPS的产生。本综述系统地汇编和分析了已发表的关于非生物因素对蓝藻EPS生物合成影响的数据，重点关注属特异性反应。使用荟萃分析技术，我们全面概述了影响EPS产生的关键因素。光照和营养条件是影响EPS产生的最重要因素，高光强度和最佳营养条件可增强EPS合成。最佳温度范围和pH值水平对于最大化EPS产生至关重要，并且蓝藻对这些因素的变化表现出属特异性反应。添加特定营养素，如NaCl、微量金属（如Mg、Zn、Cu）和升高的CO水平，会显著影响EPS产生。不同蓝藻属对这些因素的反应各不相同，这突出了需要特定属的优化策略。本综述为优化不同蓝藻属的EPS产生以及理解未来研究中的多因素相互作用和实际应用提供了理论基础。
