中国海洋大学学报（自然科学版）2024，Vol.54Issue(5)：83-90,8.DOI:10.16441/j.cnki.hdxb.20230061
胶州湾沉积物中一氧化碳的微生物产生及消耗研究
Microbial Production and Consumption of Carbon Monxide in Sediments of Jiaozhou Bay
摘要
Abstract
Carbon monoxide(CO)is one of the dominant inorganic compounds that can serve as important carbon and energy sources for microbes in marine environments.Despite the significance of CO in marine sedi-ments,the biogeochemical cycling processes remain largely unconstrained due to the limited measurements.Here we reported the first report of CO quantification in the sediments of Jiaozhou Bay and combined with labo-ratory incubation to investigate the process of CO production and consumption.CO concentrations in sediment porewater ranged from 46.8 to 189.9 nmol·L-1.The incubation experiments showed significant enhancement of microbial CO production by the addition of trimethylamine and glycine betaine.The addition of inhibitors of methanogenesis and sulfate-reducing process,Sodium 2-Bromoethanesulfonate(BES)and sodium molybdate,presented no obvious impact on CO consumption,indicating that both methanogenesis and sulfate-reduction were not the main microbial process of CO consumption.On the contrary,an obvious inhibition impact on CO consumption was found by the increased concentration of nitrate.Collectively,our study provides key informa-tion on the concentrations,production,and consumption of CO in the sediments porewater,contributing to a better understanding of CO biogeochemical cycling in the ocean.关键词
一氧化碳/海洋沉积物/生物地球化学循环/浓度测定Key words
carbon monoxide/marine sediment/biogeochemical cycle/concentration determin-ation分类
海洋科学引用本文复制引用
孟倪,关宇飞,陈思阳,李爽,庄光超..胶州湾沉积物中一氧化碳的微生物产生及消耗研究[J].中国海洋大学学报（自然科学版）,2024,54(5):83-90,8.基金项目
山东省泰山学者工程项目(tsqn2019057) （tsqn2019057）
国家自然科学基金基金项目(42076031) （42076031）
国家重点研究发展计划项目(2022YFE0136300) （2022YFE0136300）
中央高校基本科研业务费项目(202041008,1901013187)资助 Support by the Taishan Scholar Project of Shandong Province(tsqn201909057) （202041008,1901013187）
the National Natural Science Foundation of China(42076031) （42076031）
the National Key Research and Development Program of China(2022YFE0136300) （2022YFE0136300）
the Fundamental Research Funds for the Central Universities(202041008,1901013187) （202041008,1901013187）
