摘要
调节微藻生物膜的增殖生长是解决微藻附着式培养挑战的重要途径。利用小球藻研究了N-己酰基-L-高丝氨酸内酯对载体表面微藻生物膜增殖生长性能的影响。结果表明,通过在增殖生长阶段投加C6-HSL可以加快生物膜生物量的积累速度,提高稳定期生物膜生物量的上限。C6-HSL通过促进小球藻EPS,提高微藻代谢水平的同时,改变了微藻生物膜的表面结构,实现了增殖生长的提升。同时C6-HSL可以促进微藻生物膜对C,N,P的吸收能力,提高其去污能力。研究成果可为利用信号分子调控微藻生物膜系统的运行提供支撑。
Regulating the proliferative growth of algal biofilms is an important approach to address the challenges of attachment-based algal cultivation.In this study,Chlorella vulgaris was used to investigate the influence of N-hexanoyl-L-homoserine lactone(C6-HSL)on the proliferative growth performance of algal biofilms on the carrier surface.The results demonstrate that the addition of C6-HSL during the growth phase accelerates the accumulation rate of biofilm biomass and increases the upper limit of biofilm biomass during the stable period.C6-HSL promotes the secretion of extracellular polymeric substances(EPS)by Chlorella vulgaris,thereby enhancing algal metabolism and altering the surface structure of the algal biofilm,resulting in improved proliferative growth.Additionally,C6-HSL enhances the absorption capacity of algal biofilms for carbon,nitrogen,and phosphorus,thereby enhancing their pollutant removal capability.These research findings provide support for the utilization of signal molecules in regulating the operation of algal biofilm systems.
作者
谢志怀
吴俊锋
欧子旋
李宬志
吴鑫明
唐国涛
魏子钦
冯骞
XIE Zhi-huai;WU Ju-feng;OU Zi-xuan;LI Cheng-zhi;WU Xin-ming;TANG Guo-tao;WEI Zi-qin;FENG Qian(College of Environment,Hohai University,Nanjing 210098,China;Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes,Ministry of Education,Hohai University,Nanjing 210098,China;Ntu Environmental Planning and Design Institute(Jiangsu)Co.,Ltd.,Nanjing 210093,China;Nanjing No.1 Middle School,Nanjing 210001,China)
出处
《环境科技》
2024年第4期14-20,共7页
Environmental Science and Technology
基金
国家自然科学基金(51579072)
国家重点研发计划(2023YFC3208900,2023YFC3208902)
江苏省自然科学基金(BK20231465).
关键词
信号分子
微藻生物膜
胞外聚合物
Signal molecule
Microalgal biofilm
Extracellular polymers
