文献类型：期刊文献

英文题名：Adaptation responses of Dunaliella sp. and its natural symbiotic bacteria to sulfamethoxazole

作者：Tan, Xiao[1];Pan, Gang[1,3,5];Che, Wenxue[1];Man, Ying[1];Wang, Liyi[1];Li, Jinting[1];Zhao, Hui[1,2,3,4]

机构：[1]Guangdong Ocean Univ, Coll Chem & Environm Sci, Zhanjiang 524088, Peoples R China;[2]Southern Marine Sci & Engn Guangdong Lab, Zhuhai 519082, Peoples R China;[3]Guangdong Ocean Univ, Res Ctr Coastal Environm Protect & Ecol Resilience, Zhanjiang 524088, Peoples R China;[4]Guangdong Ocean Univ, Cooperat Res Ctr Offshore Marine Environm Change, Zhanjiang 524088, Peoples R China;[5]York St John Univ, Sch Humanities, York YO31 7EX, England

年份：2025

卷号：38

外文期刊名：ENVIRONMENTAL TECHNOLOGY & INNOVATION

收录：SCI-EXPANDED(收录号：WOS:001458579300001)、、EI(收录号：20251318152294)、Scopus(收录号：2-s2.0-105001286354)、WOS

基金：The funding received for this research includes National Natural Science Foundation of China (No. 42076162) and Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) (No. 311020004) .

语种：英文

外文关键词：Sulfamethoxazole; Microalgae; Natural symbiotic bacteria; Quorum sensing; Dunaliella

外文摘要：Microalgal-bacterial consortia provide a sustainable, low-cost solution for antibioticcontaminated wastewater remediation. Microalgae cultivation typically involves natural symbiotic bacteria, which are often overlooked. To fill this gap, this study evaluated the adaptive response of Dunaliella sp. and its natural symbiotic bacteria to sulfamethoxazole (SMX) through cultivation experiments and 16S rDNA sequencing. The results demonstrated strong SMX tolerance but limited removal efficiency by the consortium. The adaptive responses were characterized by increased bacterial diversity and connectivity, with quorum sensing bacteria-driven community changes and biofilm formation playing a critical role in this process. Dunaliella sp. exhibited strong antioxidant capacity (with catalase playing a key role) and increased extracellular polymeric substances secretion, which not only contributed to its tolerance but also promoted microalgae-bacteria interactions, enhancing consortium adaptability. These findings strengthen our understanding of the responses of natural symbiotic bacteria to antibiotics and advance the development of microalgae-bacteria symbiosis technology for wastewater treatment.