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You searched for: Journal Environmental microbiology Remove constraint Journal: Environmental microbiology Publication Year 2018 Remove constraint Publication Year: 2018 Source 2018 v.20 no.7 Remove constraint Source: 2018 v.20 no.7
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1. Abundance and taxonomic affiliation of molybdenum transport and utilization genes in Tengchong hot springs, China

Author:
Srivastava, Shreya; Briggs, Brandon R.; Dong, Hailiang
Source:
Environmental microbiology 2018 v.20 no.7 pp. 2397-2409
ISSN:
1462-2912
Subject:
bioavailability; biochemical pathways; biogeochemical cycles; carbon monoxide; formate dehydrogenase; genes; hot springs; metagenomics; microbial communities; microorganisms; molybdenum; nitrate reductase; nitrogen; pH; species diversity; spring; sulfite oxidase; sulfur; temperature; xanthine dehydrogenase; China
Abstract:
... The nitrogen, sulfur and carbon cycles all rely on critical microbial transformations that are carried out by enzymes that require molybdenum (Mo) as a cofactor. Despite Mo importance in these biogeochemical cycles, little information exists about microbial Mo utilization in extreme environments where, due to geochemical conditions, bioavailable Mo may be limited. Using metagenomic data from nine ...
DOI:
10.1111/1462-2920.14250

2. A nuclease‐toxin and immunity system for kin discrimination in Myxococcus xanthus

Author:
Gong, Ya; Zhang, Zheng; Liu, Ya; Zhou, Xiu‐Wen; Anwar, Mian Nabeel; Li, Ze‐Shuo; Hu, Wei; Li, Yue‐Zhong
Source:
Environmental microbiology 2018 v.20 no.7 pp. 2552-2567
ISSN:
1462-2912
Subject:
Escherichia coli; Myxococcus xanthus; bacteria; cell growth; enzyme activity; genes; immunity; models; mutants; type VI secretion system
Abstract:
... The use of toxin to attack neighbours and immunity proteins to protect against toxin has been observed in bacterial conflicts, including kin discrimination. Here, we report a novel nuclease‐toxin and its immunity protein function in the colony‐merger incompatibility, a kind of bacterial kin discrimination, in Myxococcus xanthus DK1622. The MXAN_0049 gene was determined to be a genetic determinant ...
DOI:
10.1111/1462-2920.14282

3. Arbuscular mycorrhizal fungi stimulate organic phosphate mobilization associated with changing bacterial community structure under field conditions

Author:
Zhang, Lin; Shi, Ning; Fan, Jiequn; Wang, Fei; George, Timothy S.; Feng, Gu
Source:
Environmental microbiology 2018 v.20 no.7 pp. 2639-2651
ISSN:
1462-2912
Subject:
alkaline phosphatase; bacteria; bacterial communities; biogeochemical cycles; community structure; hyphae; microbiome; mineralization; mycorrhizal fungi; phosphates; phosphorus; poly(vinyl chloride); rhizosphere; soil; trophic relationships
Abstract:
... The extraradical hyphae of arbuscular mycorrhizal fungi (AMF) harbour and interact with a microbial community performing multiple functions. However, how the AMF‐microbiome interaction influences the phosphorus (P) acquisition efficiency of the mycorrhizal pathway is unclear. Here we investigated whether AMF and their hyphal microbiome play a role in promoting organic phosphorus (P) mineralizing u ...
DOI:
10.1111/1462-2920.14289

4. Biosynthesis of abscisic acid in fungi: identification of a sesquiterpene cyclase as the key enzyme in Botrytis cinerea

Author:
Izquierdo‐Bueno, Inmaculada; González‐Rodríguez, Victoria E.; Simon, Adeline; Dalmais, Bérengère; Pradier, Jean‐Marc; Le Pêcheur, Pascal; Mercier, Alex; Walker, Anne‐Sophie; Garrido, Carlos; Collado, Isidro González; Viaud, Muriel
Source:
Environmental microbiology 2018 v.20 no.7 pp. 2469-2482
ISSN:
1462-2912
Subject:
Botrytis cinerea; abscisic acid; biosynthesis; carotenoids; chemical analysis; gene silencing; genes; genomics; oxidation; plant pathogenic fungi; trichodiene synthase
Abstract:
... While abscisic acid (ABA) is known as a hormone produced by plants through the carotenoid pathway, a small number of phytopathogenic fungi are also able to produce this sesquiterpene but they use a distinct pathway that starts with the cyclization of farnesyl diphosphate (FPP) into 2Z,4E‐α‐ionylideneethane which is then subjected to several oxidation steps. To identify the sesquiterpene cyclase (S ...
DOI:
10.1111/1462-2920.14258

5. Bloom of a denitrifying methanotroph, ‘Candidatus Methylomirabilis limnetica’, in a deep stratified lake

Author:
Graf, Jon S.; Mayr, Magdalena J.; Marchant, Hannah K.; Tienken, Daniela; Hach, Philipp F.; Brand, Andreas; Schubert, Carsten J.; Kuypers, Marcel M. M.; Milucka, Jana
Source:
Environmental microbiology 2018 v.20 no.7 pp. 2598-2614
ISSN:
1462-2912
Subject:
bacteria; denitrification; freshwater lakes; gamma-Proteobacteria; genes; habitats; messenger RNA; methane; methane production; methanotrophs; microbial communities; new species; nitric oxide; nitrogen; nitrogen cycle; oxidation; oxygen; plankton; transcriptomics
Abstract:
... Methanotrophic bacteria represent an important biological filter regulating methane emissions into the atmosphere. Planktonic methanotrophic communities in freshwater lakes are typically dominated by aerobic gamma‐proteobacteria, with a contribution from alpha‐proteobacterial methanotrophs and the NC10 bacteria. The NC10 clade encompasses methanotrophs related to ‘Candidatus Methylomirabilis oxyfe ...
DOI:
10.1111/1462-2920.14285

6. Competition and habitat filtering jointly explain phylogenetic structure of soil bacterial communities across elevational gradients

Author:
Zhang, Qian; Goberna, Marta; Liu, Yuguo; Cui, Ming; Yang, Haishui; Sun, Qixiang; Insam, Heribert; Zhou, Jinxing
Source:
Environmental microbiology 2018 v.20 no.7 pp. 2386-2396
ISSN:
1462-2912
Subject:
bacterial communities; biotic factors; carbon; climate; habitats; phylogeny; soil; soil bacteria; soil organic matter; structural equation modeling; vegetation; China
Abstract:
... The importance of assembly processes in shaping biological communities is poorly understood, especially for microbes. Here, we report on the forces that structure soil bacterial communities along a 2000 m elevational gradient. We characterized the relative importance of habitat filtering and competition on phylogenetic structure and turnover in bacterial communities. Bacterial communities exhibite ...
DOI:
10.1111/1462-2920.14247

7. Conversion of phosphatidylinositol (PI) to PI4‐phosphate (PI4P) and then to PI(4,5)P2 is essential for the cytosolic Ca2+ concentration under heat stress in Ganoderma lucidum

Author:
Liu, Yong‐Nan; Lu, Xiao‐Xiao; Ren, Ang; Shi, Liang; Zhu, Jing; Jiang, Ai‐Liang; Yu, Han‐Shou; Zhao, Ming‐Wen
Source:
Environmental microbiology 2018 v.20 no.7 pp. 2456-2468
ISSN:
1462-2912
Subject:
Ganoderma lucidum; biosynthesis; calcium; enzyme activity; enzyme inhibition; ganoderic acid; heat stress; homeostasis; inositols; lithium; phospholipids; quantitative analysis; signal transduction
Abstract:
... How cells drive the phospholipid signal response to heat stress (HS) to maintain cellular homeostasis is a fundamental issue in biology, but the regulatory mechanism of this fundamental process is unclear. Previous quantitative analyses of lipids showed that phosphatidylinositol (PI) accumulates after HS in Ganoderma lucidum, implying the inositol phospholipid signal may be associated with HS sign ...
DOI:
10.1111/1462-2920.14254

8. Culture‐independent characterization of a novel magnetotactic member affiliated to the Beta class of the Proteobacteria phylum from an acidic lagoon

Author:
Abreu, Fernanda; Leão, Pedro; Vargas, Gabriele; Cypriano, Jefferson; Figueiredo, Viviane; Enrich‐Prast, Alex; Bazylinski, Dennis A.; Lins, Ulysses
Source:
Environmental microbiology 2018 v.20 no.7 pp. 2615-2624
ISSN:
1462-2912
Subject:
Herbaspirillum; Nitrospirae; alpha-Proteobacteria; aquatic habitat; cytoplasmic granules; delta-Proteobacteria; fluorescence in situ hybridization; fluorescent dyes; freshwater; gamma-Proteobacteria; genes; magnetite; magnetotactic bacteria; morphs; nucleotide sequences; pH; phylogeny; ribosomal RNA; salt tolerance; transmission electron microscopy; Brazil
Abstract:
... Magnetotactic bacteria (MTB) comprise a group of motile microorganisms common in most mesothermal aquatic habitats with pH values around neutrality. However, during the last two decades, a number of MTB from extreme environments have been characterized including: cultured alkaliphilic strains belonging to the Deltaproteobacteria class of the Proteobacteria phylum; uncultured moderately thermophili ...
DOI:
10.1111/1462-2920.14286

9. Electron acceptor availability alters carbon and energy metabolism in a thermoacidophile

Author:
Amenabar, Maximiliano J.; Colman, Daniel R.; Poudel, Saroj; Roden, Eric E.; Boyd, Eric S.
Source:
Environmental microbiology 2018 v.20 no.7 pp. 2523-2537
ISSN:
1462-2912
Subject:
acetates; biomass; carbon; carbon dioxide; energy metabolism; hydrogen; iron; oxygen; sulfur
Abstract:
... The thermoacidophilic Acidianus strain DS80 displays versatility in its energy metabolism and can grow autotrophically and heterotrophically with elemental sulfur (S°), ferric iron (Fe³⁺) or oxygen (O₂) as electron acceptors. Here, we show that autotrophic and heterotrophic growth with S° as the electron acceptor is obligately dependent on hydrogen (H₂) as electron donor; organic substrates such a ...
DOI:
10.1111/1462-2920.14270

10. Electron acceptors for anaerobic oxidation of methane drive microbial community structure and diversity in mud volcanoes

Author:
Ren, Ge; Ma, Anzhou; Zhang, Yanfen; Deng, Ye; Zheng, Guodong; Zhuang, Xuliang; Zhuang, Guoqiang; Fortin, Danielle
Source:
Environmental microbiology 2018 v.20 no.7 pp. 2370-2385
ISSN:
1462-2912
Subject:
Archaea; bacteria; bacterial communities; basins; community structure; genes; high-throughput nucleotide sequencing; iron; methane; methanotrophs; nitrates; oxidation; phylogeny; ribosomal RNA; sulfates; volcanoes; China
Abstract:
... Mud volcanoes (MVs) emit globally significant quantities of methane into the atmosphere, however, methane cycling in such environments is not yet fully understood, as the roles of microbes and their associated biogeochemical processes have been largely overlooked. Here, we used data from high‐throughput sequencing of microbial 16S rRNA gene amplicons from six MVs in the Junggar Basin in northwest ...
DOI:
10.1111/1462-2920.14128

11. Focusing quorum sensing signalling by nano‐magnetic assembly

Author:
Guan, Yongguang; Tsao, Chen‐Yu; Quan, David N.; Li, Ying; Mei, Lei; Song, Yingying; Zhang, Boce; Liu, Yi; Payne, Gregory F.; Bentley, William E.; Wang, Qin
Source:
Environmental microbiology 2018 v.20 no.7 pp. 2585-2597
ISSN:
1462-2912
Subject:
Escherichia coli; bacteria; biofilm; cell communication; magnetism; nanoparticles; quorum sensing; virulence
Abstract:
... Quorum sensing (QS) exists widely among bacteria, enabling a transition to multicellular behaviour after bacterial populations reach a particular density. The coordination of multicellularity enables biotechnological application, dissolution of biofilms, coordination of virulence, and so forth. Here, a method to elicit and subsequently disperse multicellular behaviour among QS‐negative cells is de ...
DOI:
10.1111/1462-2920.14284
PubMed:
29806719
PubMed Central:
PMC6117212

12. Genome biology of a novel lineage of planctomycetes widespread in anoxic aquatic environments

Author:
Spring, Stefan; Bunk, Boyke; Spröer, Cathrin; Rohde, Manfred; Klenk, Hans‐Peter
Source:
Environmental microbiology 2018 v.20 no.7 pp. 2438-2455
ISSN:
1462-2912
Subject:
DNA replication; Phycisphaerae; aquatic environment; bacteria; chromosomes; evolution; genes; genetic analysis; interspersed repetitive sequences; metabolism; phenotype; sediments; surveys
Abstract:
... Anaerobic strains affiliated with a novel order‐level lineage of the Phycisphaerae class were retrieved from the suboxic zone of a hypersaline cyanobacterial mat and anoxic sediments of solar salterns. Genome sequences of five isolates were obtained and compared with metagenome‐assembled genomes representing related uncultured bacteria from various anoxic aquatic environments. Gene content surveys ...
DOI:
10.1111/1462-2920.14253

13. Genome plasticity in response to stress in Tetrahymena thermophila: selective and reversible chromosome amplification and paralogous expansion of metallothionein genes

Author:
de Francisco, Patricia; Martín‐González, Ana; Turkewitz, Aaron P.; Gutiérrez, Juan Carlos
Source:
Environmental microbiology 2018 v.20 no.7 pp. 2410-2421
ISSN:
1462-2912
Subject:
Tetrahymena thermophila; cadmium; chromosomes; copper; genes; genetic variation; genomics; lead; metallothionein; models; plasticity; polyploidy; stress response; toxicity
Abstract:
... Extreme stress situations can induce genetic variations including genome reorganization. In ciliates like Tetrahymena thermophila, the approximately 45‐fold ploidy of the somatic macronucleus may enable adaptive responses that depend on genome plasticity. To identify potential genome‐level adaptations related to metal toxicity, we isolated three Tetrahymena thermophila strains after an extended ad ...
DOI:
10.1111/1462-2920.14251
PubMed:
29687579
PubMed Central:
PMC6117198

14. Host‐microbe interaction in the gastrointestinal tract

Author:
Parker, Aimée; Lawson, Melissa A. E.; Vaux, Laura; Pin, Carmen
Source:
Environmental microbiology 2018 v.20 no.7 pp. 2337-2353
ISSN:
1462-2912
Subject:
adulthood; germ-free animals; homeostasis; host-pathogen relationships; immune system; innervation; intestinal microorganisms; intestinal mucosa; mathematical models; microbial colonization; mucosal immunity; nervous system; signal transduction; symbiosis
Abstract:
... The gastrointestinal tract is a highly complex organ in which multiple dynamic physiological processes are tightly coordinated while interacting with a dense and extremely diverse microbial population. From establishment in early life, through to host‐microbe symbiosis in adulthood, the gut microbiota plays a vital role in our development and health. The effect of the microbiota on gut development ...
DOI:
10.1111/1462-2920.13926
PubMed:
28892253
PubMed Central:
PMC6175405

15. Identification of inner membrane translocase components of TolC‐mediated secretion in the cyanobacterium Synechocystis sp. PCC 6803

Author:
Gonçalves, Cátia F.; Pacheco, Catarina C.; Tamagnini, Paula; Oliveira, Paulo
Source:
Environmental microbiology 2018 v.20 no.7 pp. 2354-2369
ISSN:
1462-2912
Subject:
Synechocystis sp. PCC 6803; drugs; fimbriae; genes; glycosylation; homeostasis; mutants; phenotype; photosynthesis; primary productivity; secretion; stress management; transmission electron microscopy; transporters; type I secretion system
Abstract:
... Cyanobacteria were the first organisms ever to perform oxygenic photosynthesis and still significantly contribute to primary production on a global scale. To assure the proper functioning of their primary metabolism and cell homeostasis, cyanobacteria must rely on efficient transport systems to cross their multilayered cell envelope. However, cyanobacterial secretion mechanisms remain largely unkn ...
DOI:
10.1111/1462-2920.14095

16. Metabolic flexibility of a prospective bioremediator: Desulfitobacterium hafniense Y51 challenged in chemostats

Author:
Marozava, Sviatlana; Vargas‐López, Raquel; Tian, Ye; Merl‐Pham, Juliane; Braster, Martin; Meckenstock, Rainer U.; Smidt, Hauke; Röling, Wilfred F.M.; Westerhoff, Hans V.
Source:
Environmental microbiology 2018 v.20 no.7 pp. 2652-2669
ISSN:
1462-2912
Subject:
Desulfitobacterium hafniense; biodegradation; fumarates; genes; lactic acid; proteins; proteomics; tetrachloroethylene; transcription (genetics); transcriptomics; translation (genetics)
Abstract:
... Desulfitobacterium hafniense Y51 has been widely used in investigations of perchloroethylene (PCE) biodegradation, but limited information exists on its other physiological capabilities. We investigated how D. hafniense Y51 confronts the debilitating limitations of not having enough electron donor (lactate), or electron acceptor (fumarate) during cultivation in chemostats. The residual concentrati ...
DOI:
10.1111/1462-2920.14295

17. Metal contaminations impact archaeal community composition, abundance and function in remote alpine lakes

Author:
Compte‐Port, Sergi; Borrego, Carles M.; Moussard, Hélène; Jeanbille, Mathilde; Restrepo‐Ortiz, Claudia Ximena; de Diego, Alberto; Rodriguez‐Iruretagoiena, Azibar; Gredilla, Ainara; Fdez‐Ortiz de Vallejuelo, Silvia; Galand, Pierre E.; Kalenitchenko, Dimitri; Rols, Jean‐Luc; Pokrovsky, Oleg S.; Gonzalez, Aridane G.; Camarero, Lluis; Muñiz, Selene; Navarro‐Navarro, Enrique; Auguet, Jean‐Christophe
Source:
Environmental microbiology 2018 v.20 no.7 pp. 2422-2437
ISSN:
1462-2912
Subject:
Euryarchaeota; atmospheric deposition; bedrock; cadmium; carbon cycle; community structure; genes; habitats; lakes; lead; messenger RNA; methane production; methanogens; ribosomal RNA; sediments
Abstract:
... Using the 16S rRNA and mcrA genes, we investigated the composition, abundance and activity of sediment archaeal communities within 18 high‐mountain lakes under contrasted metal levels from different origins (bedrock erosion, past‐mining activities and atmospheric depositions). Bathyarchaeota, Euryarchaeota and Woesearchaeota were the major phyla found at the meta‐community scale, representing 48%, ...
DOI:
10.1111/1462-2920.14252

18. Microbial life under ice: Metagenome diversity and in situ activity of Verrucomicrobia in seasonally ice‐covered Lakes

Author:
Tran, Patricia; Ramachandran, Arthi; Khawasik, Ola; Beisner, Beatrix E.; Rautio, Milla; Huot, Yannick; Walsh, David A.
Source:
Environmental microbiology 2018 v.20 no.7 pp. 2568-2584
ISSN:
1462-2912
Subject:
Verrucomicrobia; algal blooms; biosynthesis; carbohydrates; carbon; chemotaxis; chlorophyll; ecosystems; flagellum; gene expression; genes; hydrogen; ice; lakes; metagenomics; oxidation; ribosomal RNA; sequence analysis; sulfur; transcriptomics; urea; winter; Quebec
Abstract:
... Northern lakes are ice‐covered for a large part of the year, yet our understanding of microbial diversity and activity during winter lags behind that of the ice‐free period. In this study, we investigated under‐ice diversity and metabolism of Verrucomicrobia in seasonally ice‐covered lakes in temperate and boreal regions of Quebec, Canada using 16S rRNA sequencing, metagenomics and metatranscripto ...
DOI:
10.1111/1462-2920.14283

19. Microbial responses to inorganic nutrient amendment overridden by warming: Consequences on soil carbon stability

Author:
Wang, Mengmeng; Ding, Junjun; Sun, Bo; Zhang, Junyu; Wyckoff, Kristen N.; Yue, Haowei; Zhao, Mengxin; Liang, Yuting; Wang, Xiaoyue; Wen, Chongqing; Zhou, Jizhong; Yang, Yunfeng
Source:
Environmental microbiology 2018 v.20 no.7 pp. 2509-2522
ISSN:
1462-2912
Subject:
Agaricomycetes; Microbotryomycetes; Mollisols; agroecosystems; anthropogenic activities; carbon; carbon sequestration; eutrophication; fungi; genes; global warming; nitrogen; phosphorus; phytomass; potassium; soil microorganisms; soil organic matter; subtropics; temperate zones
Abstract:
... Eutrophication and climate warming, induced by anthropogenic activities, are simultaneously occurring worldwide and jointly affecting soil carbon stability. Therefore, it is of great interest to examine whether and how they interactively affect soil microbial community, a major soil carbon driver. Here, we showed that climate warming, simulated by southward transferring Mollisol soil in agricultur ...
DOI:
10.1111/1462-2920.14239

20. Novel bacterial lineages associated with boreal moss species

Author:
Holland‐Moritz, Hannah; Stuart, Julia; Lewis, Lily R.; Miller, Samantha; Mack, Michelle C.; McDaniel, Stuart F.; Fierer, Noah
Source:
Environmental microbiology 2018 v.20 no.7 pp. 2625-2638
ISSN:
1462-2912
Subject:
autotrophs; bacteria; bacterial communities; carbon dioxide fixation; community structure; ecosystems; genetic markers; genome; glyoxylate cycle; host plants; metagenomics; microbiome; mosses and liverworts; nitrogen; photorespiration; primary productivity; ribulose-bisphosphate carboxylase; sequence analysis; Alaska
Abstract:
... Mosses are critical components of boreal ecosystems where they typically account for a large proportion of net primary productivity and harbour diverse bacterial communities that can be the major source of biologically‐fixed nitrogen in these ecosystems. Despite their ecological importance, we have limited understanding of how microbial communities vary across boreal moss species and the extent to ...
DOI:
10.1111/1462-2920.14288