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Responses of microbial interactions to elevated salinity in activated sludge microbial community

Frontiers of Environmental Science & Engineering 2023年第5期17卷 93-103页

作者： Tao Ya Zhimin Wang Junyu Liu Minglu Zhang Lili Zhang Xiaojing Liu Yuan Li Xiaohui Wang Beijing Engineering Research Center of Environmental Material for Water Purification College of Chemical EngineeringBeijing University of Chemical TechnologyBeijing 100029China State Environmental Protection Key Laboratory of Food Chain Pollution Control Beijing Technology and Business UniversityBeijing 100048China Puyang Vocational and Technical College Puyang 457000China

Biological treatment processes are critical for sewage purification,wherein microbial interactions are tightly associated with treatment *** studies have focused on assessing how environmental factors(such as salinity)affect the diversity and composition of the microbial community but ignore the connections among ***,we described the microbial interactions in response to elevated salinity in an activated sludge system by performing an association network *** was found that higher salinity resulted in low microbial diversity,and small,complex,more competitive overall networks,leading to poor performance of the treatment *** of major phyla(Proteobacteria,Bacteroidetes,and Chloroflexi)and functional bacteria(such as AOB,NOB and denitrifiers)differed substantially under elevated salinity *** with subnetworks of Nitrosomonadaceae,Nitrosomonas(AOB)made a greater contribution to nitrification under higher salinity(especially 3%)in the activated sludge *** established more proportion of cooperative relationships with other bacteria to resist 3%salinity ***,identified keystone species playing crucial roles in maintaining process stability were dynamics and less abundant under salinity *** gleaned from this study deepened our understanding of microbial interaction in response to elevated salinity in activated sludge systems.

关键词： Elevated salinity Activated sludge system Pollution removal microbial interactions Competitive relationship

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Soil biofilms:microbial interactions,challenges,and advanced techniques for ex-situ characterization

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Soil Ecology Letters 2019年第3期1卷 85-93页

作者： Peng Cai Xiaojie Sun Yichao Wu Chunhui Gao Monika Mortimer Patricia A.Holden Marc Redmile-Gordon Qiaoyun Huang State Key Laboratory of Agricultural Microbiology College of Resources and EnvironmentHuazhong Agricultural UniversityWuhan 430070China Bren School of Environmental Science and Management and Earth Research Institute and University of California Center for the Environmental Implications of Nanotechnology(UC CEIN) University of CaliforniaSanta BarbaraCA 93106USA Department of Environmental Horticulture Royal Horticultural SocietyWisleySurreyGU236QBUK

Soil is inhabited by a myriad of microorganisms,many of which can form supracellular structures,called biofilms,comprised of surface-associated microbial cells embedded in hydrated extracellular polymeric substance that facilitates adhesion and *** enable intensive inter-and intra-species interactions that can increase the degradation efficiency of soil organic matter and materials commonly regarded as ***,we first discuss organization,dynamics and properties of soil biofilms in the context of traditional approaches to probe the soil *** interactions among bacteria,such as cooperation and competition,are *** also summarize different biofilm cultivation devices in combination with optics and fluorescence microscopes as well as sequencing techniques for the study of soil *** platforms,which can be applied to mimic the complex soil environment and study microbial behaviors at the microscale with highthroughput screening and novel measurements,are also *** review aims to highlight soil biofilm research in order to expand the current limited knowledge about soil microbiomes which until now has mostly ignored biofilms as a dominant growth form.

关键词： Soil microbiome Soil biofilm microbial interactions Micro-scale environments Biofilm cultivation devices Microfluidic techniques

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Recent advances in droplet microfluidics for microbiology

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Chinese Chemical Letters 2022年第4期33卷 1729-1742页

作者： Ziyi He Hao Wu Xianghua Yan Wu Liu State Key Laboratory of Agricultural Microbiology College of Veterinary MedicineHuazhong Agricultural UniversityWuhan430070China Interdisciplinary Sciences Institute Huazhong Agricultural UniversityWuhan 430070China State Key Laboratory of Agricultural Microbiology College of Animal Sciences and TechnologyHuazhong Agricultural UniversityWuhan 430070China Hubei Hongshan Laboratory Wuhan 430070China The Cooperative Innovation Center of Sustainable Pig Production Wuhan 430070China Hubei Provincial Engineering Laboratory for Pig Precision Feeding and Feed Safety Technology Wuhan 430070China Institute of Pharmaceutical Analysis School of Pharmaceutical SciencesCheeloo College of MedicineShandong UniversityJinan 250012China

Advances in microbiology rely on innovations in technology. Droplet microfluidics, as a versatile and powerful technique that allows high-throughput generation and manipulation of subnanoliter volume droplets, has become an indispensable tool shifting experimental paradigms in microbiology. Droplet microfluidics has opened new avenues to various microbiological research, from resolving single-cell heterogeneity to investigating spatiotemporal dynamics of microbial communities, from precise quantitation of microbiota to systematic decipherment of microbial interactions, and from isolating rare and uncultured microbes to improving genetic engineered strains. In this review, we present recent advances of droplet microfluidics in various fields of microbiology: i) microbial cultivation, ii) microorganism detection and characterization, iii) antibiotic susceptibility testing, iv) microbial interactions, v) microbial *** also provide our perspectives on the challenges and future directions for droplet microfluidic-based microbiology research.

关键词： Droplet microfluidics Microorganisms Antibiotic susceptibility testing microbial interactions microbial biotechnology

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Distinct co‑occurrence patterns and driving forces of abundant and rare bacterial communities in the multispecies solid‑state fermentation process of cereal vinegar

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Systems Microbiology and Biomanufacturing 2022年第2期2卷 317-330页

作者： Ming‑Ye Peng Zhen‑Ming Lu Xiao‑Juan Zhang Ting Huang Yong‑Jian Deng Li‑Juan Chai Jin‑Song Shi Zheng-Hong Xu Key Laboratory of Industrial Biotechnology of Ministry of Education School of BiotechnologyJiangnan UniversityWuxi 214122People’s Republic of China National Engineering Laboratory for Cereal Fermentation Technology Jiangnan University1800 Lihu AvenueWuxi 214122People’s Republic of China School of Pharmaceutical Science Jiangnan UniversityWuxi 214122People’s Republic of China Jiangsu Engineering Research Center for Bioactive Products Processing Technology Jiangnan UniversityWuxi 214122People’s Republic of China National Engineering Research Center of Solid-State Brewing Luzhou 646000People’s Republic of China

Multispecies solid-state fermentation is a traditional processing technique for the traditional Chinese food,such as cereal vinegar,Baijiu,***,few abundant and many rare microbes were involved in such processes,and the necessity and roles of the latter are less *** the co-occurrence patterns of abundant and rare bacterial community and abiotic factors infuencing their community assembly were investigated in acetic acid fermentation following starter inoculation,using Zhenjiang aromatic vinegar as a model *** taxa that contribute to the function of accumulating acid exhibited a ubiquitous distribution while the distribution of rare taxa along the fermentation process *** species composition of the rare taxa signifcantly altered,but abundant taxa were maintained after ***,the diversity of rare taxa changed more signifcantly than that of abundant *** abundant and rare sub-communities,which were contributed more with species turnover than species richness,were demonstrated to be driven by pH,acetic acid,ammonium nitrogen,and *** processes regulated the assembly of both sub-communities,but more prominent on rare ***-occurrence network was more governed by rare sub-communities,and the co-variations between microbial communities were predominantly positive,implying that rare taxa played more important role in the fermentation stability and network ***,seven network connectors were identifed,and three of them belonged to rare *** microbes of diferent modules were enriched at particular phases of *** results demonstrate the ecological signifcance of rare bacteria and provide new insights into understanding the abiotic factors infuence microbial structure in traditional fermented foods.

关键词： Solid-state fermentation Rare sub-community Community assembly Co-occurrence network microbial interactions

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Salinity causes differences in stratigraphic methane sources and sinks

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Environmental Science and Ecotechnology 2024年第3期19卷 141-151页

作者： Ying Qu Yuxiang Zhao Xiangwu Yao Jiaqi Wang Zishu Liu Yi Hong Ping Zheng Lizhong Wang Baolan Hu Department of Environmental Engineering Zhejiang UniversityHangzhouChina Ocean College Zhejiang UniversityZhoushanChina Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety HangzhouChina

Methane metabolism,driven by methanogenic and methanotrophic microorganisms,plays a pivotal role in the carbon *** seawater intrusion and soil salinization rise due to global environmental shifts,understanding how salinity affects methane emissions,especially in deep strata,becomes ***,insights into stratigraphic methane release under varying salinity conditions remain *** we investigate the effects of salinity on methane metabolism across terrestrial and coastal strata(15-40 m depth)through in situ and microcosm simulation *** strata,exhibiting a salinity level five times greater than terrestrial strata,manifested a 12.05%decrease in total methane production,but a staggering 687.34%surge in methane oxidation,culminating in 146.31%diminished methane *** emerged as a significant factor shaping the methane-metabolizing microbial community's dynamics,impacting the methanogenic archaeal,methanotrophic archaeal,and methanotrophic bacterial communities by 16.53%,27.25%,and 22.94%,***,microbial interactions influenced strata system methane *** pathway analyses suggested Atribacteria JS1's potential role in organic matter decomposition,facilitating methane production via *** study thus offers a comprehensive lens to comprehend stratigraphic methane emission dynamics and the overarching factors modulating them.

关键词： Shallow gas strata Salinity Methane emission microbial community microbial interactions

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Contrasting response of rice rhizosphere microbiomes to in situ cadmium-contaminated soil remediation

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Soil Ecology Letters 2024年第2期6卷 149-162页

作者： Zhongyi Cheng Qinyu Han Yan He Jiachun Shi Laosheng Wu Jianming Xu Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment Institute of Soil and Water Resources and Environmental ScienceCollege of Environmental and Resource SciencesZhejiang UniversityHangzhou310058China Key Laboratory of Environment Remediation and Ecological Health Ministry of EducationHangzhou310058China Department of Environmental Sciences University of CaliforniaRiversideCA92521USA

Changes in soil properties and microbial communities regulated rhizosphere protistan assemblages. • Bacterial community was more sensitive to soil amendments than protists and fungi. • Soil amendments trigger the role of specific protistan taxa Cercozoa on microbial interactions. Understanding the responses of different rhizosphere microbial lineages to soil amendments during in situ remediation of Cd-contaminated soil is of great importance in the assessment of the restoration and crop health. Here, we evaluated the effects of lime (LM), biochar (BC), pig manure (PM), and a commercial Mg-Ca-Si conditioner (CMC) on the rice rhizosphere soil physicochemical properties and community assembly of bacteria, fungi, and protists in a six-year consecutive application of soil amendments field trial. Our results indicated that among the four amendments, the BC and CMC had the best efficiency in increasing soil pH, which were 5.2% and 16.2%, respectively. Despite the differences in soil Cd concentrations is not noticeable, all the soil amendment treatments significantly decreased the proportion of available Cd in total Cd compared to the control. Soil amendments significantly altered the diversity of bacterial community, while they had no effect on fungal and protistan communities. Linear discriminant analysis effect size (LEfSe) showed that the bacteria was more sensitive to soil amendment-induced changes. For protists, treatments with LM and BC changed the groups of protistan consumers, while treatments with PM and CMC significantly increased the relative abundances of protistan phototrophs. Co-occurrence network analysis revealed that soil amendments increased microbial network complexity and triggered the role of protists, especially for the predatory protists Cercozoa, on microbial trophic interactions. Further variation partitioning analysis revealed that edaphic properties, bacterial and fungal communities compositions together explained the 77% of the total variation i

关键词： cadmium soil amendments soil protist community microbial interactions

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