Ultraviolet-resistant quorum-sensing quenching functional bacteria and application of quorum-sensing quenching functional small balls in inhibiting growth of cyanobacteria

By using the UV-tolerant quorum sensing quenching bacteria Staphylococcus sp. SSN and quorum sensing quenching microspheres, the high cost and secondary pollution problems of existing cyanobacteria control technologies have been solved, achieving low-cost and effective cyanobacteria inhibition and killing effects.

CN122397718APending Publication Date: 2026-07-17SHANGHAI UNIV +1

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI UNIV
Filing Date
2026-04-24
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing physical and chemical methods for controlling cyanobacterial blooms are costly, time-consuming, require significant human and material resources, and pose a risk of secondary pollution. Chemical agents may disrupt the balance of aquatic ecosystems, and cyanobacteria have defense mechanisms against ultraviolet light, making it difficult to effectively inhibit their growth.

Method used

By utilizing the UV-tolerant quorum sensing quenching bacteria Staphylococcus sp. SSN, the expression of quorum sensing genes was interfered with by degrading signaling molecules secreted by cyanobacteria, and the growth of cyanobacteria was inhibited under UV light by combining with quorum sensing quenching microspheres.

Benefits of technology

It effectively inhibits the growth of cyanobacteria, reduces treatment costs, maintains the balance of the aquatic ecosystem, and uses ultraviolet light to kill cyanobacteria, thus avoiding secondary pollution.

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Abstract

本发明涉及一种紫外耐受群体感应猝灭功能细菌及群体感应猝灭功能小球在抑制蓝藻生长中的应用。该方法主要运用了一株从活性污泥中筛分出的紫外耐受群体感应猝灭功能细菌对光照条件下的蓝藻生长进行抑制。所述细菌负载在硼酸交联聚乙烯醇的复合凝胶小球当中,并将其投加在蓝藻藻液当中来抑制蓝藻的生长。由于该细菌可耐受紫外照射,在光照或紫外照射条件下通过感应猝灭抑制蓝藻对于紫外的抵抗能力和生存能力,进而通过紫外的照射大量杀灭藻细胞。由于太阳光中含有大量紫外辐射,因此本发明的方法可以利用这一部分的紫外光实现对蓝藻有效杀灭,对控制水体中的蓝藻爆发、具有重要意义。
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