Le-Yang Yang, Shun Li, Hua-Yuan Shangguan, Zhi-Hong Qiao, Xin-Rong Huang, Shu-Yi-Dan Zhou, Hu Li, Xiao-Xuan Su, Xin Sun, Yong-Guan Zhu, Xiao-Ru Yang
{"title":"城市化影响土壤氧化亚氮还原菌的多样性和活性","authors":"Le-Yang Yang, Shun Li, Hua-Yuan Shangguan, Zhi-Hong Qiao, Xin-Rong Huang, Shu-Yi-Dan Zhou, Hu Li, Xiao-Xuan Su, Xin Sun, Yong-Guan Zhu, Xiao-Ru Yang","doi":"10.1021/acs.est.4c01750","DOIUrl":null,"url":null,"abstract":"Nitrous oxide (N<sub>2</sub>O) is a potent greenhouse gas with various production pathways. N<sub>2</sub>O reductase (N<sub>2</sub>OR) is the primary N<sub>2</sub>O sink, but the distribution of its gene clades, typically <i>nosZ</i>I and atypically <i>nosZ</i>II, along urbanization gradients remains poorly understood. Here we sampled soils from forests, parks, and farmland across eight provinces in eastern China, using high-throughput sequencing to distinguish between two N<sub>2</sub>O-reducing bacteria clades. A deterministic process mainly determined assemblies of the <i>nosZ</i>I communities. Homogeneous selection drove <i>nosZ</i>I deterministic processes, and both homogeneous and heterogeneous selection influenced <i>nosZ</i>II. This suggests <i>nosZ</i>II is more sensitive to environmental changes than <i>nosZ</i>I, with significant changes in community structure over time or space. Ecosystems with stronger anthropogenic disturbance, such as urban areas, provide diverse ecological niches for N<sub>2</sub>O-reducing bacteria (especially <i>nosZ</i>II) to adapt to environmental fluctuations. Structural equation modeling (SEM) and correlation analyses revealed that pH significantly influences the community composition of both N<sub>2</sub>O-reducing bacteria clades. This study underscores urbanization’s impact on N<sub>2</sub>O-reducing bacteria in urban soils, highlighting the importance of <i>nosZ</i>II and survival strategies. It offers novel insights into the role of atypical denitrifiers among N<sub>2</sub>O-reducing bacteria, underscoring their potential ecological importance in mitigating N<sub>2</sub>O emissions from urban soils.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":null,"pages":null},"PeriodicalIF":10.8000,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Diversity and Activity of Soil N2O-Reducing Bacteria Shaped by Urbanization\",\"authors\":\"Le-Yang Yang, Shun Li, Hua-Yuan Shangguan, Zhi-Hong Qiao, Xin-Rong Huang, Shu-Yi-Dan Zhou, Hu Li, Xiao-Xuan Su, Xin Sun, Yong-Guan Zhu, Xiao-Ru Yang\",\"doi\":\"10.1021/acs.est.4c01750\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Nitrous oxide (N<sub>2</sub>O) is a potent greenhouse gas with various production pathways. 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Diversity and Activity of Soil N2O-Reducing Bacteria Shaped by Urbanization
Nitrous oxide (N2O) is a potent greenhouse gas with various production pathways. N2O reductase (N2OR) is the primary N2O sink, but the distribution of its gene clades, typically nosZI and atypically nosZII, along urbanization gradients remains poorly understood. Here we sampled soils from forests, parks, and farmland across eight provinces in eastern China, using high-throughput sequencing to distinguish between two N2O-reducing bacteria clades. A deterministic process mainly determined assemblies of the nosZI communities. Homogeneous selection drove nosZI deterministic processes, and both homogeneous and heterogeneous selection influenced nosZII. This suggests nosZII is more sensitive to environmental changes than nosZI, with significant changes in community structure over time or space. Ecosystems with stronger anthropogenic disturbance, such as urban areas, provide diverse ecological niches for N2O-reducing bacteria (especially nosZII) to adapt to environmental fluctuations. Structural equation modeling (SEM) and correlation analyses revealed that pH significantly influences the community composition of both N2O-reducing bacteria clades. This study underscores urbanization’s impact on N2O-reducing bacteria in urban soils, highlighting the importance of nosZII and survival strategies. It offers novel insights into the role of atypical denitrifiers among N2O-reducing bacteria, underscoring their potential ecological importance in mitigating N2O emissions from urban soils.
期刊介绍:
Environmental Science & Technology (ES&T) is a co-sponsored academic and technical magazine by the Hubei Provincial Environmental Protection Bureau and the Hubei Provincial Academy of Environmental Sciences.
Environmental Science & Technology (ES&T) holds the status of Chinese core journals, scientific papers source journals of China, Chinese Science Citation Database source journals, and Chinese Academic Journal Comprehensive Evaluation Database source journals. This publication focuses on the academic field of environmental protection, featuring articles related to environmental protection and technical advancements.