摘要
膦酸酯是新近发现的一类生物可利用磷,其广泛存在于水生生态系统,是水体有机磷库的重要组成,构成水体磷氧化还原循环的关键环节。随着研究的深入,越来越多的蓝藻藻株被证实参与膦酸酯的生物利用与合成,有助于阐明其适应低磷环境的机制,促进了对蓝藻磷策略与水体磷循环的全面理解,具有重要的生态学意义。与此同时,蓝藻对膦酸酯的利用性状,使得膦酸酯作为环境污染物与蓝藻磷源的双重作用开始显现,这会对水体浮游生物竞争格局的研究产生深远影响;而蓝藻的甲基膦酸代谢也被认为是水体好氧甲烷发生的来源之一。本文回顾了蓝藻膦酸酯利用与合成的研究历史,对目前蓝藻膦酸酯代谢过程生态风险与生态意义的研究进展进行了梳理,并对这一领域未来发展趋势进行了评述。
As a group of newly identified bioavailable phosphorus sources,phosphonates are an important part of the aquatic organophosphorus pool and constitute a key component in the phosphorus redox cycle.In recent years,dozens of cyanobacterial strains have been demonstrated to participate in the utilization and biosynthesis of phosphonates,aiding in the understanding of how these strains are able to adapt to low concentrations of phosphate.The discovery of cyanobacteria phosphonate utilization promotes our knowledge of cyanobacterial phosphorus strategy and water phosphorus cycle.Intensive studies have shown the duel ecological role of phosphonates that serve both as a source of phosphorus and as a biocide for planktonics in aquatic ecosystems.They can damage the aquatic ecosystems by driving a selective decrease in phosphonate-sensitive portions with a corresponding increase in phosphonate-consuming cyanobacteria.On the other hand,cyanobacterial methylphosphonate catabolism is regarded as a promising mechanism of oxic methane production in the water.This paper reviewed the research history of cyanobacterial phosphonates utilization and biosynthesis.A summary of the research progress on the ecological risks and ecological significance of cyanobacterial phosphonates metabolism was also provided.Finally,we proposed comments on the future focus in this field.
作者
彭思慧
黄淑敏
曾莹
林立洲
郑凌凌
章颖
宋立荣
束文圣
李春连
赵亮
Peng Sihui;Huang Shumin;Zeng Ying;Lin Lizhou;Zheng Lingling;Zhang Ying;Song Lirong;Shu Wensheng;Li Chunlian;Zhao Liang(Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring,Guangdong Provincial Key Laboratory of Biotechnology for Plant Development,School of Life Sciences,South China Normal University,Guangzhou 510631,P.R.China;State Key Laboratory of Freshwater Ecology and Biotechnology,Key Laboratory of Algal Biology,Institute of Hydrobiology,Chinese Academy of Science,Wuhan 430072,P.R.China;Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application,State Key Laboratory of Applied Microbiology Southern China,Institute of Microbiology,Guangdong Academy of Sciences,Guangzhou 510070,P.R.China;Yueqi High School,Zhejiang Province,Shaoxing 312050,P.R.China)
出处
《湖泊科学》
EI
CAS
CSCD
北大核心
2023年第1期43-56,共14页
Journal of Lake Sciences
基金
国家自然科学基金项目(31900090,32270114,3201101157)资助。
关键词
蓝藻
蓝藻磷策略
膦酸酯生物利用
膦酸酯生物合成
好氧甲烷发生
Cyanobacteria
cyanobacterial phosphorus strategy
phosphonate biodegradation
phosphonate biosynthesis
oxic methane production
