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1. Emerging strategies for engineering microbial communities

Author:
Tsoi, Ryan; Dai, Zhuojun; You, Lingchong
Source:
Biotechnology advances 2019
ISSN:
0734-9750
Subject:
microbial communities,   etc   ; bioremediation; biosynthesis; engineering; microorganisms;     Show all 5 Subjects
Abstract:
... From biosynthesis to bioremediation, microbes have been engineered to address a variety of biotechnological applications. A promising direction in these endeavors is harnessing the power of designer microbial consortia that consist of multiple populations with well-defined interactions. Consortia can accomplish tasks that are difficult or potentially impossible to achieve using monocultures. Despi ...
DOI:
10.1016/j.biotechadv.2019.03.011

2. Concept of microbial gatekeepers: Positive guys?

Author:
Dai, Wenfang; Chen, Jiong; Xiong, Jinbo
Source:
Applied microbiology and biotechnology 2019 v.103 no.2 pp. 633-641
ISSN:
0175-7598
Subject:
microbial communities,   etc   ; biogeochemistry; diagnostic techniques; microorganisms;     Show all 4 Subjects
Abstract:
... Microorganisms contribute diverse and fundamental roles in biogeochemical processes. In a given microbial community, individuals interact with one another to form complex regulatory networks in which gatekeepers contribute disproportional roles in sustaining stability, dynamics, and function. Owing to the ecological and functional importance of microbial gatekeeper, this review provides an overvie ...
DOI:
10.1007/s00253-018-9522-3

3. Microbial community design: methods, applications, and opportunities

Author:
Eng, Alexander; Borenstein, Elhanan
Source:
Current opinion in biotechnology 2019 v.58 pp. 117-128
ISSN:
0958-1669
Subject:
microbial communities,   etc   ; artificial selection; community development; computational methodology; surveys; therapeutics;     Show all 6 Subjects
Abstract:
... Microbial communities can perform a variety of behaviors that are useful in both therapeutic and industrial settings. Engineered communities that differ in composition from naturally occurring communities offer a unique opportunity for improving upon existing community functions and expanding the range of microbial community applications. This has prompted recent advances in various community desi ...
DOI:
10.1016/j.copbio.2019.03.002

4. Rapid control of activated sludge bulking and simultaneous acceleration of aerobic granulation by adding intact aerobic granular sludge

Author:
Zou, Jinte; Pan, Jiyang; Wu, Shuyun; Qian, Mengjie; He, Zhanfei; Wang, Binbin; Li, Jun
Source:
The Science of the total environment 2019 v.674 pp. 105-113
ISSN:
0048-9697
Subject:
microbial communities,   etc   ; Rhodobacteraceae; Thauera; Zoogloea; activated sludge; biomass; nitrification;     Show all 7 Subjects
Abstract:
... The feasibility of rapidly controlling activated sludge bulking and accelerating aerobic sludge granulation was evaluated by adding intact aerobic granular sludge (AGS) to the bulking activated sludge (BAS) reactor. Two ratios of AGS to BAS (0.2 in the first reactor (R1), and 0.4 in the second reactor (R2)) were tested. The results indicate that the addition of AGS immediately improved the settlin ...
DOI:
10.1016/j.scitotenv.2019.04.006

5. Assessing activated sludge morphology and oxygen transfer performance using image analysis

Author:
Campbell, Ken; Wang, Jianmin; Daniels, Margo
Source:
Chemosphere 2019 v.223 pp. 694-703
ISSN:
0045-6535
Subject:
microbial communities,   etc   ; activated sludge; energy; image analysis; oxygen; polymers; viscosity;     Show all 7 Subjects
Abstract:
... The morphology of the microbial communities can have dramatic impacts on not only the treatment performance, but also the energy use performance of an activated sludge process. In this research, we developed and calibrated an image analysis technique to determine key morphological parameters such as the floc diameter and the specific filament length (SFL) and discovered that the SFL has significan ...
DOI:
10.1016/j.chemosphere.2019.02.088

6. Effects of key enzyme activities and microbial communities in a flocculent-granular hybrid complete autotrophic nitrogen removal over nitrite reactor under mainstream conditions

Author:
Li, Bolin; Yan, Wenkai; Wang, Yue; Wang, Heng; Zhou, Zhi; Li, Ye; Zhang, Wenqin
Source:
Bioresource technology 2019 v.280 pp. 136-142
ISSN:
0960-8524
Subject:
microbial communities,   etc   ; enzyme activity; enzymes; nitrifying bacteria; nitrites; nitrogen; temperature;     Show all 7 Subjects
Abstract:
... Recently, a flocculent-granular hybrid reactor was reported as a novel nitrogen removal system; however, the mechanisms of stable operation in the system remain unclear. In this study, the mechanisms of the stable nitrogen removal performance in a flocculent-granular hybrid system were investigated with temperature reduction. The operational period was divided into three phases with different temp ...
DOI:
10.1016/j.biortech.2019.01.146

7. Understanding the influence of carbon nanomaterials on microbial communities

Author:
Chen, Ming; Sun, Yan; Liang, Jie; Zeng, Guangming; Li, Zhongwu; Tang, Lin; Zhu, Yi; Jiang, Danni; Song, Biao
Source:
Environment international 2019 v.126 pp. 690-698
ISSN:
0160-4120
Subject:
microbial communities,   etc   ; adverse effects; carbon nanotubes; fullerene; graphene; microorganisms; toxicity;     Show all 7 Subjects
Abstract:
... Carbon nanomaterials (CNMs) are widely used because of their unique advantages in recent years. At the same time, the influence of CNMs on the environment is becoming increasingly prominent. This review mainly introduces the research progress in the effects of fullerenes, multi-walled carbon nanotubes (MWCNTs), single-walled carbon nanotubes (SWCNTs) and graphene on microorganisms and their toxici ...
DOI:
10.1016/j.envint.2019.02.005

8. Metagenomic analysis of the inhibitory effect of chromium on microbial communities and removal efficiency in A2O sludge

Author:
Sun, Fu-Lin; Fan, Lei-Lei; Wang, You-Shao; Huang, Li-Yan
Source:
Journal of hazardous materials 2019 v.368 pp. 523-529
ISSN:
0304-3894
Subject:
microbial communities,   etc   ; biochemical pathways; chromium; denitrification; genes; metagenomics; microorganisms; sludge;     Show all 8 Subjects
Abstract:
... This is the first study exploring the effects of persistent Cr(VI) treatment on microbial communities and function as well as the process efficiency of an A2O system. The inhibitory effect was clearly higher at a high Cr(VI) concentration than a low Cr(VI) concentration, and different Cr(VI) concentrations had distinct effects on the microbial communities as well as on the performance efficiency o ...
DOI:
10.1016/j.jhazmat.2019.01.076

9. Cyanobacterial diversity in the algal–bacterial consortia from Subarctic regions: new insights from the rock baths at White Sea Coast

Author:
Kublanovskaya, A.; Chekanov, K.; Solovchenko, A.; Lobakova, E.
Source:
Hydrobiologia 2019 v.830 no.1 pp. 17-31
ISSN:
0018-8158
Subject:
microbial communities,   etc   ; Cyanobacteria; coasts; databases; environmental factors; habitats; metagenomics; taxonomy;     Show all 8 Subjects
Abstract:
... Cyanobacteria characterized by exceptional tolerance to environmental stresses often become pioneer settlers in habitats with harsh conditions. There, they can constitute the core of microbial communities. The taxonomic composition of the cyanobacterial component of algal–bacterial consortia dwelling in a habitat with particularly harsh conditions (rock baths at the coast of Kandalaksha Bay of the ...
DOI:
10.1007/s10750-018-3844-0

10. Ecological succession in a changing world

Author:
Chang, Cynthia C.; Turner, Benjamin L.
Source:
Thejournal of ecology 2019 v.107 no.2 pp. 503-509
ISSN:
0022-0477
Subject:
microbial communities,   etc   ; anthropogenic activities; ecological succession; ecosystems; habitats;     Show all 5 Subjects
Abstract:
... Ecological succession – how biological communities re‐assemble and change over time following natural or anthropogenic disturbance – has been studied since the birth of ecology, and the resulting theoretical framework underpins many aspects of the discipline. Recently, the mechanistic basis of classic succession theory has been advanced by studies of plant and microbial interactions, functional tr ...
DOI:
10.1111/1365-2745.13132

11. Less Is More: Genome Reduction and the Emergence of Cooperation—Implications into the Coevolution of Microbial Communities

Author:
Bosi, Emanuele; Mascagni, Flavia
Source:
International Journal of Genomics 2019 v.2019
ISSN:
2314-4378
Subject:
microbial communities,   etc   ; coevolution; genome; genomics; hosts; translation (genetics);     Show all 6 Subjects
Abstract:
... Organisms change to adapt to the environment in which they live, evolving with coresiding individuals. Classic Darwinism postulates the primal importance of antagonistic interactions and selfishness as a major driver of evolution, promoting an increase of genomic and organism complexities. Recently, advancements in evolutionary ecology reshaped this notion, showing how leakiness in biological func ...
DOI:
10.1155/2019/2659175

12. Rapid reformation of larger aerobic granular sludge in an internal-circulation membrane bioreactor after long-term operation: Effect of short-time aeration

Author:
Chen, Guangpeng; Bin, Liying; Tang, Bing; Huang, Shaosong; Li, Ping; Fu, Fenglian; Wu, Luying; Yang, Zhiwen
Source:
Bioresource technology 2019 v.273 pp. 462-467
ISSN:
0960-8524
Subject:
microbial communities,   etc   ; aeration; bacteria; biomass; hydrophilicity; membrane bioreactors; sludge;     Show all 7 Subjects
Abstract:
... The investigation aimed at revealing the influence of an external disturbance on the rapid reformation of larger aerobic granular sludge (AGS) in an internal-circulation membrane bioreactor (IC-MBR) after long-term operation. The used IC-MBR was continuously operated well for more than one year, in which, the biomass was still in the state of AGS with a balanced average size at around 200 μm and a ...
DOI:
10.1016/j.biortech.2018.11.029

13. Facilitation promotes invasions in plant‐associated microbial communities

Author:
Li, Mei; Wei, Zhong; Wang, Jianing; Jousset, Alexandre; Friman, Ville‐Petri; Xu, Yangchun; Shen, Qirong; Pommier, Thomas
Source:
Ecology letters 2019 v.22 no.1 pp. 149-158
ISSN:
1461-023X
Subject:
microbial communities,   etc   ; Ralstonia solanacearum; antibiosis; bacteria; rhizosphere; tomatoes;     Show all 6 Subjects
Abstract:
... While several studies have established a positive correlation between community diversity and invasion resistance, it is less clear how species interactions within resident communities shape this process. Here, we experimentally tested how antagonistic and facilitative pairwise interactions within resident model microbial communities predict invasion by the plant–pathogenic bacterium Ralstonia sol ...
DOI:
10.1111/ele.13177

14. Simulation and experimental validation of a gradient feeding system for fast assessment of the kinetic behavior of a microbial consortium in a tubular biofilm reactor

Author:
Salazar-Huerta, Merlyn Alejandra; Ruiz-Ordaz, Nora; Galíndez-Mayer, Juvencio; García-Mena, Jaime; Juárez-Ramírez, Cleotilde
Source:
Bioprocess and biosystems engineering 2019 v.42 no.1 pp. 17-27
ISSN:
1615-7591
Subject:
microbial communities,   etc   ; biofilm; feeding methods; imidacloprid; mathematical models; tanks;     Show all 6 Subjects
Abstract:
... This study deals with the mathematical simulation and experimental validation of a gradient system for the gradual change of the imidacloprid loading rate to a tubular biofilm reactor (TBR). The strategy was used for fast studies of the kinetic and stoichiometric impact caused by the increase in the pesticide loading rate in a TBR, running in plug flow regime. Seemingly, this strategy has never be ...
DOI:
10.1007/s00449-018-2009-x

15. Spatial, Temporal, and Phylogenetic Scales of Microbial Ecology

Author:
Ladau, Joshua; Eloe-Fadrosh, Emiley A.
Source:
Trends in microbiology 2019
ISSN:
0966-842X
Subject:
microbial communities,   etc   ; biogeochemical cycles; bioremediation; microbiology; nestedness; phylogeny;     Show all 6 Subjects
Abstract:
... Microbial communities play a major role in disease, biogeochemical cycling, agriculture, and bioremediation. However, identifying the ecological processes that govern microbial community assembly and disentangling the relative impacts of those processes has proven challenging. Here, we propose that this discord is due to microbial systems being studied at different spatial, temporal, and phylogene ...
DOI:
10.1016/j.tim.2019.03.003

16. Understanding and Engineering Distributed Biochemical Pathways in Microbial Communities

Author:
Cao, Xinyun; Hamilton, Joshua J.; Venturelli, Ophelia S.
Source:
Biochemistry 2018 v.58 no.2 pp. 94-107
ISSN:
1520-4995
Subject:
microbial communities,   etc   ; biochemical pathways; microbiome;     Show all 3 Subjects
Abstract:
... Microbiomes impact nearly every environment on Earth by modulating the molecular composition of the environment. Temporally changing environmental stimuli and spatial organization are major variables shaping the structure and function of microbiomes. The web of interactions among members of these communities and between the organisms and the environment dictates microbiome functions. Microbial int ...
DOI:
10.1021/acs.biochem.8b01006

17. Simple organizing principles in microbial communities

Author:
Gore, Jeff
Source:
Current opinion in microbiology 2018 v.45 pp. 195-202
ISSN:
1369-5274
Subject:
microbial communities,   etc   ; animal models; microorganisms;     Show all 3 Subjects
Abstract:
... There is a great deal of interest in discovering the principles that organize microbial communities, to better understand the structure and diversity of these communities in the natural world. Recent conceptual and technical advances have shown how simple organizing principles can give rise to surprising diversity and complex patterns in these consortia. Understanding competition, cooperation, and ...
DOI:
10.1016/j.mib.2018.11.007

18. ASAR: visual analysis of metagenomes in R

Author:
Orakov, Askarbek N; Sakenova, Nazgul K; Sorokin, Anatoly; Goryanin, Igor I
Source:
Bioinformatics 2018 v.34 no.8 pp. 1404-1405
ISSN:
1460-2059
Subject:
microbial communities,   etc   ; bioinformatics; metagenomics; taxonomy;     Show all 4 Subjects
Abstract:
... Functional and taxonomic analyses are critical steps in understanding interspecific interactions within microbial communities. Currently, such analyses are run separately, which complicates interpretation of results. Here we present the ASAR interactive tool for simultaneous analysis of metagenomic data in three dimensions: taxonomy, function, metagenome. An interactive data analysis tool for sele ...
DOI:
10.1093/bioinformatics/btx775

19. The Past and Future Biology of the Human Microbiome in an Age of Extinctions

Author:
Blaser, Martin J.
Source:
Cell 2018 v.172 no.6 pp. 1173-1177
ISSN:
0092-8674
Subject:
microbial communities,   etc   ; humans; medicine; microbiome;     Show all 4 Subjects
Abstract:
... The evolutionary fate of humans is intimately linked with that of our microbiome. Medical and technological advances have caused large-scale changes in the composition and maturation of human-associated microbial communities, increasing our susceptibility to infectious and developmental diseases. Restoration of the human microbiome must become a priority for biomedicine. ...
DOI:
10.1016/j.cell.2018.02.040

20. Simultaneous oxidation of ammonium and tetracycline in a membrane aerated biofilm reactor

Author:
Taşkan, Banu; Casey, Eoin; Hasar, Halil
Source:
The Science of the total environment 2019 v.682 pp. 553-560
ISSN:
0048-9697
Subject:
microbial communities,   etc   ; ammonium; beta-Proteobacteria; biofilm; nitrification; oxidation; oxygen; pollution load; tetracycline; wastewater treatment;     Show all 10 Subjects
Abstract:
... The membrane aerated biofilms reactor (MABR) is an emerging technology in wastewater treatment with particular advantages including high rate nitrification, and very high oxygen transfer efficiencies. In this study a synthetic feed water incorporating tetracycline (TC) was investigated in a MABR. Simultaneous removal of ammonium and tetracycline (TC) in the reactor, formation of TC transformation ...
DOI:
10.1016/j.scitotenv.2019.05.111