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Journal articles on the topic 'Microbe-Microbe competition'

Author: Grafiati

Published: 30 November 2024

Last updated: 31 July 2025

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1

Itoh, Hideomi, Seonghan Jang, Kazutaka Takeshita, et al. "Host–symbiont specificity determined by microbe–microbe competition in an insect gut." Proceedings of the National Academy of Sciences 116, no. 45 (2019): 22673–82. http://dx.doi.org/10.1073/pnas.1912397116.

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Despite the omnipresence of specific host–symbiont associations with acquisition of the microbial symbiont from the environment, little is known about how the specificity of the interaction evolved and is maintained. The bean bug Riptortus pedestris acquires a specific bacterial symbiont of the genus Burkholderia from environmental soil and harbors it in midgut crypts. The genus Burkholderia consists of over 100 species, showing ecologically diverse lifestyles, and including serious human pathogens, plant pathogens, and nodule-forming plant mutualists, as well as insect mutualists. Through inf

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Fang, Ferric C., and Arturo Casadevall. "Competitive Science: Is Competition Ruining Science?" Microbe Magazine 10, no. 6 (2015): 224–25. http://dx.doi.org/10.1128/microbe.10.224.1.

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Heinken, Almut, and Ines Thiele. "Anoxic Conditions Promote Species-Specific Mutualism between Gut MicrobesIn Silico." Applied and Environmental Microbiology 81, no. 12 (2015): 4049–61. http://dx.doi.org/10.1128/aem.00101-15.

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ABSTRACTThe human gut is inhabited by thousands of microbial species, most of which are still uncharacterized. Gut microbes have adapted to each other's presence as well as to the host and engage in complex cross feeding. Constraint-based modeling has been successfully applied to predicting microbe-microbe interactions, such as commensalism, mutualism, and competition. Here, we apply a constraint-based approach to model pairwise interactions between 11 representative gut microbes. Microbe-microbe interactions were computationally modeled in conjunction with human small intestinal enterocytes,

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Wardle, D. A., and Marie-Charlotte Nilsson. "Microbe-plant competition, allelopathy and arctic plants." Oecologia 109, no. 2 (1997): 291–93. http://dx.doi.org/10.1007/s004420050086.

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Xiong, Xiyan, Sara L. Loo, Li Zhang, and Mark M. Tanaka. "Modelling the effect of birth and feeding modes on the development of human gut microbiota." Proceedings of the Royal Society B: Biological Sciences 288, no. 1942 (2021): 20201810. http://dx.doi.org/10.1098/rspb.2020.1810.

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The human gut microbiota is transmitted from mother to infant through vaginal birth and breastfeeding. Bifidobacterium , a genus that dominates the infants’ gut, is adapted to breast milk in its ability to metabolize human milk oligosaccharides; it is regarded as a mutualist owing to its involvement in the development of the immune system. The composition of microbiota, including the abundance of Bifidobacteria, is highly variable between individuals and some microbial profiles are associated with diseases. However, whether and how birth and feeding practices contribute to such variation remai

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Glatthardt, Thaís, Rayssa Durães Lima, Raquel Monteiro de Mattos, and Rosana Barreto Rocha Ferreira. "Microbe Interactions within the Skin Microbiome." Antibiotics 13, no. 1 (2024): 49. http://dx.doi.org/10.3390/antibiotics13010049.

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The skin is the largest human organ and is responsible for many important functions, such as temperature regulation, water transport, and protection from external insults. It is colonized by several microorganisms that interact with each other and with the host, shaping the microbial structure and community dynamics. Through these interactions, the skin microbiota can inhibit pathogens through several mechanisms such as the production of bacteriocins, proteases, phenol soluble modulins (PSMs), and fermentation. Furthermore, these commensals can produce molecules with antivirulence activity, re

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Moreau, Delphine, Barbara Pivato, David Bru, et al. "Plant traits related to nitrogen uptake influence plant-microbe competition." Ecology 96, no. 8 (2015): 2300–2310. http://dx.doi.org/10.1890/14-1761.1.

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Burgos, Hector L., Emanuel F. Burgos, Andrew J. Steinberger, Garret Suen, and Mark J. Mandel. "Multiplexed Competition in a Synthetic Squid Light Organ Microbiome Using Barcode-Tagged Gene Deletions." mSystems 5, no. 6 (2020): e00846-20. http://dx.doi.org/10.1128/msystems.00846-20.

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ABSTRACTBeneficial symbioses between microbes and their eukaryotic hosts are ubiquitous and have widespread impacts on host health and development. The binary symbiosis between the bioluminescent bacterium Vibrio fischeri and its squid host Euprymna scolopes serves as a model system to study molecular mechanisms at the microbe-animal interface. To identify colonization factors in this system, our lab previously conducted a global transposon insertion sequencing (INSeq) screen and identified over 300 putative novel squid colonization factors in V. fischeri. To pursue mechanistic studies on thes

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Dong, Yue, and Xinzhu Meng. "Stochastic dynamic analysis of a chemostat model of intestinal microbes with migratory effect." AIMS Mathematics 8, no. 3 (2023): 6356–74. http://dx.doi.org/10.3934/math.2023321.

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<abstract><p>This paper proposes a stochastic intestinal chemostat model considering microbial migration, intraspecific competition and stochastic perturbation. First, the extinction and persistence in mean of the intestinal microbe of the chemostat model are investigated by constructing the appropriate Lyapunov functions. Second, we explore and obtain sufficient conditions for the existence and uniqueness of an ergodic stationary distribution of the model by using ergodic theory. The results show stochastic interference has a critical impact on the extinction and sustainable survi

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LINDÉN, Sara, Jafar MAHDAVI, Jan HEDENBRO, Thomas BORÉN, and Ingemar CARLSTEDT. "Effects of pH on Helicobacter pylori binding to human gastric mucins: identification of binding to non-MUC5AC mucins." Biochemical Journal 384, no. 2 (2004): 263–70. http://dx.doi.org/10.1042/bj20040402.

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Helicobacter pylori causes gastritis, peptic ulcer disease and gastric cancer. The microbe is found in the gastric mucus layer where a pH gradient ranging from acidic in the lumen to neutral at the cell surface is maintained. The aim of the present study was to investigate the effects of pH on H. pylori binding to gastric mucins from healthy individuals. At pH 3, all strains bound to the most charged MUC5AC glycoform and to a putative mucin of higher charge and larger size than subunits of MUC5AC and MUC6, irrespective of host blood-group. In contrast, at pH 7.4 only Leb-binding BabA-positive

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YANDIGERI, Mahesh S., Manoj Kumar SOLANKI, Sudheer KUMAR, Rajesh Kumar SINGH, and Alok K. SRIVASTAVA. "Nutrient Competition Mediated Antagonism of Microbes Against Rhizoctonia solani." Notulae Scientia Biologicae 10, no. 3 (2018): 392–99. http://dx.doi.org/10.15835/nsb10310312.

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Plant growth-promoting (PGP) microorganisms are beneficial soil micro creatures which may facilitate plant growth by direct or indirect ways. Bacillus amyloliquefaciens MB101 (BA), Streptomyces atrovirens N23 (SA) and Hypocrea lixii NAIMCC-F-01760 (HL) were earlier reported to have the ability to manage the tomato root rot disease caused by Rhizoctonia solani (RS) at some extent. In the present study, effect of nutrient supplementation like potato dextrose broth (PDB) and tomato root extract (TRE) on antagonism of these three microbes was characterized under the soil microcosm in order to unde

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Kiel, Reese Brandi, Megan Mullis, and Jason Selwyn. "Global distribution and diversity of antimicrobial genes across subsurface bacterial and archaeal metagenome assembled genomes." ARPHA Conference Abstracts 6 (October 17, 2023): e108167. https://doi.org/10.3897/aca.6.e108167.

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Microorganisms have the capability to produce antimicrobial compounds through secondary metabolism, which are not essential within their natural environments, but have been found to have many effects on the ecosystem. Antimicrobial production genes have been identified in a wide range of microorganisms; however, research into natural ecosystems has historically been limited to continental soil environments. Antimicrobial production research has been limited in the deep continental subsurface and marine environments, especially deeply buried marine sediments. We analyzed 466 high-quality metage

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Pei, Yu, Hans Hagdorn, Thomas Voigt, Jan-Peter Duda, and Joachim Reitner. "Palaeoecological Implications of Lower-Middle Triassic Stromatolites and Microbe-Metazoan Build-Ups in the Germanic Basin: Insights into the Aftermath of the Permian–Triassic Crisis." Geosciences 12, no. 3 (2022): 133. http://dx.doi.org/10.3390/geosciences12030133.

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Following the end-Permian crisis, microbialites were ubiquitous worldwide. For instance, Triassic deposits in the Germanic Basin provide a rich record of stromatolites as well as of microbe-metazoan build-ups with nonspicular demosponges. Despite their palaeoecological significance, however, all of these microbialites have only rarely been studied. This study aims to fill this gap by examining and comparing microbialites from the Upper Buntsandstein (Olenekian, Lower Triassic) and the lower Middle Muschelkalk (Anisian, Middle Triassic) in Germany. By combining analytical petrography (optical m

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Zak, Donald R., Peter M. Groffman, Kurt S. Pregitzer, Soren Christensen, and James M. Tiedje. "The Vernal Dam: Plant-Microbe Competition for Nitrogen in Northern Hardwood Forests." Ecology 71, no. 2 (1990): 651–56. http://dx.doi.org/10.2307/1940319.

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15

Ruxton, Graeme D., David M. Wilkinson, H. Martin Schaefer, and Thomas N. Sherratt. "Why fruit rots: theoretical support for Janzen's theory of microbe–macrobe competition." Proceedings of the Royal Society B: Biological Sciences 281, no. 1782 (2014): 20133320. http://dx.doi.org/10.1098/rspb.2013.3320.

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We present a formal model of Janzen's influential theory that competition for resources between microbes and vertebrates causes microbes to be selected to make these resources unpalatable to vertebrates. That is, fruit rots, seeds mould and meat spoils, in part, because microbes gain a selective advantage if they can alter the properties of these resources to avoid losing the resources to vertebrate consumers. A previous model had failed to find circumstances in which such a costly spoilage trait could flourish; here, we present a simple analytic model of a general situation where costly micro

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Jamieson, Nicola, and Kenneth Killham. "Biocide manipulation of N flow to investigate root/microbe competition in forest soil." Plant and Soil 159, no. 2 (1994): 283–90. http://dx.doi.org/10.1007/bf00009291.

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Liu, Hui, Jing Chen, Tianzi Qin, Xinjian Shi, Yubao Gao, and Anzhi Ren. "Removal of Soil Microbes Alters Interspecific Competitiveness of Epichloë Endophyte-Infected over Endophyte-Free Leymus chinensis." Microorganisms 8, no. 2 (2020): 219. http://dx.doi.org/10.3390/microorganisms8020219.

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Epichloë endophytes may not only affect the growth and resistances of host grasses, but may also affect soil environment including soil microbes. Can Epichloë endophyte-mediated modification of soil microbes affect the competitive ability of host grasses? In this study, we tested whether Epichloë endophytes and soil microbes alter intraspecific competition between Epichloë endophyte-colonized (EI) and endophyte-free (EF) Leymus chinensis and interspecific competition between L. chinensis and Stipa krylovii. The results demonstrated that Epichloë endophyte colonization significantly enhanced th

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Neumann, Wilma, Rose C. Hadley, and Elizabeth M. Nolan. "Transition metals at the host–pathogen interface: how Neisseria exploit human metalloproteins for acquiring iron and zinc." Essays in Biochemistry 61, no. 2 (2017): 211–23. http://dx.doi.org/10.1042/ebc20160084.

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Transition metals are essential nutrients for all organisms and important players in the host–microbe interaction. During bacterial infection, a tug-of-war between the host and microbe for nutrient metals occurs: the host innate immune system responds to the pathogen by reducing metal availability and the pathogen tries to outmaneuver this response. The outcome of this competition, which involves metal-sequestering host-defense proteins and microbial metal acquisition machinery, is an important determinant for whether infection occurs. One strategy bacterial pathogens employ to overcome metal

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Aivelo, Tuomas, Anna Norberg, and Barbara Tschirren. "Bacterial microbiota composition of Ixodes ricinus ticks: the role of environmental variation, tick characteristics and microbial interactions." PeerJ 7 (December 19, 2019): e8217. http://dx.doi.org/10.7717/peerj.8217.

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Ecological factors, host characteristics and/or interactions among microbes may all shape the occurrence of microbes and the structure of microbial communities within organisms. In the past, disentangling these factors and determining their relative importance in shaping within-host microbiota communities has been hampered by analytical limitations to account for (dis)similar environmental preferences (‘environmental filtering’). Here we used a joint species distribution modelling (JSDM) approach to characterize the bacterial microbiota of one of the most important disease vectors in Europe, t

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Chung, Y. Anny, and Jennifer A. Rudgers. "Plant–soil feedbacks promote negative frequency dependence in the coexistence of two aridland grasses." Proceedings of the Royal Society B: Biological Sciences 283, no. 1835 (2016): 20160608. http://dx.doi.org/10.1098/rspb.2016.0608.

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Understanding the mechanisms of species coexistence is key to predicting patterns of species diversity. Historically, the ecological paradigm has been that species coexist by partitioning resources: as a species increases in abundance, self-limitation kicks in, because species-specific resources decline. However, determining coexistence mechanisms has been a particular puzzle for sedentary organisms with high overlap in their resource requirements, such as plants. Recent evidence suggests that plant-associated microbes could generate the stabilizing self-limitation (negative frequency dependen

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Usyskin-Tonne, Alla, Yitzhak Hadar, and Dror Minz. "Spike Formation Is a Turning Point Determining Wheat Root Microbiome Abundance, Structures and Functions." International Journal of Molecular Sciences 22, no. 21 (2021): 11948. http://dx.doi.org/10.3390/ijms222111948.

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Root selection of their associated microbiome composition and activities is determined by the plant’s developmental stage and distance from the root. Total gene abundance, structure and functions of root-associated and rhizospheric microbiomes were studied throughout wheat growth season under field conditions. On the root surface, abundance of the well-known wheat colonizers Proteobacteria and Actinobacteria decreased and increased, respectively, during spike formation, whereas abundance of Bacteroidetes was independent of spike formation. Metagenomic analysis combined with functional co-occur

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Jesus, Joana G., Andreia Anjos, Cristina Máguas, and Helena Trindade. "Unraveling the microbiome dynamics of the invasive Acacia longifolia: a closer look at seeds and nodules." NeoBiota 99 (June 5, 2025): 93–108. https://doi.org/10.3897/neobiota.99.144628.

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Acacia longifolia, a species native to Australia, is an aggressive invasive in Mediterranean-type ecosystems worldwide. Its success in diverse habitats, expanding from coastal dunes to forests, is often attributed to its ability to establish interactions with a variety of microbes, including bacteria and fungi. This study investigates the seed and root-nodule microbiomes of A. longifolia to understand the roles these microbial communities play in its adaptation and invasive behaviour. Using high-throughput sequencing, we characterized the bacteriome and mycobiome associated with the plant, con

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Hood-Pishchany, M. Indriati, and Seth Rakoff-Nahoum. "#85: Nutrient Availability Drives Community Dynamics in the Vaginal Microbiota." Journal of the Pediatric Infectious Diseases Society 10, Supplement_1 (2021): S9. http://dx.doi.org/10.1093/jpids/piaa170.027.

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Abstract Background Nutrient utilization is both critical for niche occupation and is the driver of competitive and cooperative interactions in microbial communities. The FRT is replete with host-associated glycans in the form of glycoproteins, epithelial glycogen stores, and the breakdown products of these glycans. I hypothesized that host-associated glycans drive environment, microbe–microbe and host–microbe interactions in the FRT. Methods We have developed robust, scalable, high-throughput culturing systems to empirically define the substrate utilization traits from more than 60 unique bac

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Zhu, Qing, William J. Riley, and Jinyun Tang. "A new theory of plant-microbe nutrient competition resolves inconsistencies between observations and model predictions." Ecological Applications 27, no. 3 (2017): 875–86. http://dx.doi.org/10.1002/eap.1490.

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Blanchette, Melanie L., and Mark A. Lund. "Aquatic Ecosystems of the Anthropocene: Limnology and Microbial Ecology of Mine Pit Lakes." Microorganisms 9, no. 6 (2021): 1207. http://dx.doi.org/10.3390/microorganisms9061207.

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Mine pit lakes (‘pit lakes’) are new aquatic ecosystems of the Anthropocene. Potentially hundreds of meters deep, these lakes are prominent in the landscape and in the public consciousness. However, the ecology of pit lakes is underrepresented in the literature. The broad goal of this research was to determine the environmental drivers of pelagic microbe assemblages in Australian coal pit lakes. The overall experimental design was four lakes sampled three times, top and bottom, in 2019. Instrument chains were installed in lakes and measurements of in situ water quality and water samples for me

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Zilelidou, Evangelia A., and Aspasia Nisiotou. "Understanding Wine through Yeast Interactions." Microorganisms 9, no. 8 (2021): 1620. http://dx.doi.org/10.3390/microorganisms9081620.

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Wine is a product of microbial activities and microbe–microbe interactions. Yeasts are the principal microorganisms responsible for the evolution and fulfillment of alcoholic fermentation. Several species and strains coexist and interact with their environment and with each other during the fermentation course. Yeast–yeast interactions occur even from the early stages of fermentation, determining yeast community structure and dynamics during the process. Different types of microbial interactions (e.g., mutualism and commensalism or competition and amensalism) may exert positive or negative eff

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Than, Anh The, Fleur Ponton, and Juliano Morimoto. "Integrative developmental ecology: a review of density-dependent effects on life-history traits and host-microbe interactions in non-social holometabolous insects." Evolutionary Ecology 34, no. 5 (2020): 659–80. http://dx.doi.org/10.1007/s10682-020-10073-x.

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Abstract Population density modulates a wide range of eco-evolutionary processes including inter- and intra-specific competition, fitness and population dynamics. In holometabolous insects, the larval stage is particularly susceptible to density-dependent effects because the larva is the resource-acquiring stage. Larval density-dependent effects can modulate the expression of life-history traits not only in the larval and adult stages but also downstream for population dynamics and evolution. Better understanding the scope and generality of density-dependent effects on life-history traits of c

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Zhang, Xiaoyan, Ruifang Ye, Fengxian Hu, et al. "Learning from Competition: An Outcome-Based Introductory Activity for First-Year Biotechnology Undergraduates." American Biology Teacher 81, no. 7 (2019): 467–73. http://dx.doi.org/10.1525/abt.2019.81.7.467.

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In recent years, accreditation standards for international engineering education have led to a dramatic rise in the use of outcome-based education at universities. In this system, enticing new undergraduate students to science and engineering, although challenging, is the first important step toward building students' career competencies. An ongoing effort to attract students to biotechnology was initiated 13 years ago in the School of Biotechnology at the East China University of Science and Technology in Shanghai. We describe the design and organization of the Microbe Competition, a program

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Zhang, Chi, Jiangman He, Huiling Dai, et al. "Discriminating symbiosis and immunity signals by receptor competition in rice." Proceedings of the National Academy of Sciences 118, no. 16 (2021): e2023738118. http://dx.doi.org/10.1073/pnas.2023738118.

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Plants encounter various microbes in nature and must respond appropriately to symbiotic or pathogenic ones. In rice, the receptor-like kinase OsCERK1 is involved in recognizing both symbiotic and immune signals. However, how these opposing signals are discerned via OsCERK1 remains unknown. Here, we found that receptor competition enables the discrimination of symbiosis and immunity signals in rice. On the one hand, the symbiotic receptor OsMYR1 and its short-length chitooligosaccharide ligand inhibit complex formation between OsCERK1 and OsCEBiP and suppress OsCERK1 phosphorylating the downstr

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Butterbach-Bahl, Klaus, Elizabeth M. Baggs, Michael Dannenmann, Ralf Kiese, and Sophie Zechmeister-Boltenstern. "Nitrous oxide emissions from soils: how well do we understand the processes and their controls?" Philosophical Transactions of the Royal Society B: Biological Sciences 368, no. 1621 (2013): 20130122. http://dx.doi.org/10.1098/rstb.2013.0122.

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Although it is well established that soils are the dominating source for atmospheric nitrous oxide (N 2 O), we are still struggling to fully understand the complexity of the underlying microbial production and consumption processes and the links to biotic (e.g. inter- and intraspecies competition, food webs, plant–microbe interaction) and abiotic (e.g. soil climate, physics and chemistry) factors. Recent work shows that a better understanding of the composition and diversity of the microbial community across a variety of soils in different climates and under different land use, as well as plan

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Maynard, Daniel S., Kenneth E. Leonard, John M. Drake, David W. Hall, Thomas W. Crowther, and Mark A. Bradford. "Modelling the multidimensional niche by linking functional traits to competitive performance." Proceedings of the Royal Society B: Biological Sciences 282, no. 1811 (2015): 20150516. http://dx.doi.org/10.1098/rspb.2015.0516.

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Linking competitive outcomes to environmental conditions is necessary for understanding species' distributions and responses to environmental change. Despite this importance, generalizable approaches for predicting competitive outcomes across abiotic gradients are lacking, driven largely by the highly complex and context-dependent nature of biotic interactions. Here, we present and empirically test a novel niche model that uses functional traits to model the niche space of organisms and predict competitive outcomes of co-occurring populations across multiple resource gradients. The model makes

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Liu-Xu, Luisa, Ana Isabel González-Hernández, Gemma Camañes, Begonya Vicedo, Loredana Scalschi, and Eugenio Llorens. "Harnessing Green Helpers: Nitrogen-Fixing Bacteria and Other Beneficial Microorganisms in Plant–Microbe Interactions for Sustainable Agriculture." Horticulturae 10, no. 6 (2024): 621. http://dx.doi.org/10.3390/horticulturae10060621.

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The health of soil is paramount for sustaining life, as it hosts diverse communities of microorganisms that interact with plants, influencing their growth, health, and resilience. Beneficial microorganisms, including fungi and bacteria, form symbiotic relationships with plants, providing essential nutrients, promoting growth, and enhancing stress tolerance. These microorganisms, such as mycorrhizal fungi and plant growth-promoting bacteria, play crucial roles in nutrient cycling, soil health, and plant productivity. Additionally, they help lessen reliance on chemical fertilizers, thereby mitig

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Cao, Juan, Ruirui Yan, Xiaoyong Chen, et al. "Grazing Affects the Ecological Stoichiometry of the Plant–Soil–Microbe System on the Hulunber Steppe, China." Sustainability 11, no. 19 (2019): 5226. http://dx.doi.org/10.3390/su11195226.

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Grazing affects nutrient cycling processes in grasslands, but little is known by researchers about effects on the nutrient stoichiometry of plant–soil–microbe systems. In this study, the influence of grazing intensity (0, 0.23, 0.34, 0.46, 0.69, and 0.92 AU ha−1) on carbon (C), nitrogen (N) and phosphorus (P) and their stoichiometric ratios in plants, soil, and microbes was investigated in a Hulunber meadow steppe, Northeastern China. The C:N and C:P ratios of shoots decreased with grazing increased. Leaf N:P ratios <10 suggested that the plant communities under grazing were N-limited. Heav

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Li, Xiang-Yi, Tim Lachnit, Sebastian Fraune, Thomas C. G. Bosch, Arne Traulsen, and Michael Sieber. "Temperate phages as self-replicating weapons in bacterial competition." Journal of The Royal Society Interface 14, no. 137 (2017): 20170563. http://dx.doi.org/10.1098/rsif.2017.0563.

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Microbial communities are accompanied by a diverse array of viruses. Through infections of abundant microbes, these viruses have the potential to mediate competition within the community, effectively weakening competitive interactions and promoting coexistence. This is of particular relevance for host-associated microbial communities, because the diversity of the microbiota has been linked to host health and functioning. Here, we study the interaction between two key members of the microbiota of the freshwater metazoan Hydra vulgaris . The two commensal bacteria Curvibacter sp. and Duganella s

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Lipson, David A., and Russell K. Monson. "Plant-microbe competition for soil amino acids in the alpine tundra: effects of freeze-thaw and dry-rewet events." Oecologia 113, no. 3 (1998): 406–14. http://dx.doi.org/10.1007/s004420050393.

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Ushio, Masayuki, Takeshi Miki, and Kanehiro Kitayama. "Phenolic Control of Plant Nitrogen Acquisition through the Inhibition of Soil Microbial Decomposition Processes: A Plant-Microbe Competition Model." Microbes and Environments 24, no. 2 (2009): 180–87. http://dx.doi.org/10.1264/jsme2.me09107.

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Agathokleous, Evgenios, Zhaozhong Feng, Elina Oksanen, et al. "Ozone affects plant, insect, and soil microbial communities: A threat to terrestrial ecosystems and biodiversity." Science Advances 6, no. 33 (2020): eabc1176. http://dx.doi.org/10.1126/sciadv.abc1176.

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Elevated tropospheric ozone concentrations induce adverse effects in plants. We reviewed how ozone affects (i) the composition and diversity of plant communities by affecting key physiological traits; (ii) foliar chemistry and the emission of volatiles, thereby affecting plant-plant competition, plant-insect interactions, and the composition of insect communities; and (iii) plant-soil-microbe interactions and the composition of soil communities by disrupting plant litterfall and altering root exudation, soil enzymatic activities, decomposition, and nutrient cycling. The community composition o

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Rozen, D. E., D. J. P. Engelmoer, and P. T. Smiseth. "Antimicrobial strategies in burying beetles breeding on carrion." Proceedings of the National Academy of Sciences 105, no. 46 (2008): 17890–95. http://dx.doi.org/10.1073/pnas.0805403105.

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Rich and ephemeral resources, such as carrion, are a source of intense interspecific competition among animal scavengers and microbial decomposers. Janzen [Janzen DH (1977) Am Nat 111:691–713] hypothesized that microbes should be selected to defend such resources by rendering them unpalatable or toxic to animals, and that animals should evolve counterstrategies of avoidance or detoxification. Despite the ubiquity of animal-microbe competition, there are few tests of Janzen's hypothesis, in particular with respect to antimicrobial strategies in animals. Here, we use the burying beetle Nicrophor

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Si, Meiru, Chao Zhao, Brianne Burkinshaw, et al. "Manganese scavenging and oxidative stress response mediated by type VI secretion system in Burkholderia thailandensis." Proceedings of the National Academy of Sciences 114, no. 11 (2017): E2233—E2242. http://dx.doi.org/10.1073/pnas.1614902114.

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Type VI secretion system (T6SS) is a versatile protein export machinery widely distributed in Gram-negative bacteria. Known to translocate protein substrates to eukaryotic and prokaryotic target cells to cause cellular damage, the T6SS has been primarily recognized as a contact-dependent bacterial weapon for microbe–host and microbial interspecies competition. Here we report contact-independent functions of the T6SS for metal acquisition, bacteria competition, and resistance to oxidative stress. We demonstrate that the T6SS-4 in Burkholderia thailandensis is critical for survival under oxidati

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Frank, Steven A. "Microbial secretor–cheater dynamics." Philosophical Transactions of the Royal Society B: Biological Sciences 365, no. 1552 (2010): 2515–22. http://dx.doi.org/10.1098/rstb.2010.0003.

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Microbial secretions manipulate the environment and communicate information to neighbours. The secretions of an individual microbe typically act externally and benefit all members of the local group. Secreting imposes a cost in terms of growth, so that cheaters that do not secrete gain by sharing the benefits without paying the costs. Cheaters have been observed in several experimental and natural settings. Given that cheaters grow faster than secretors when in direct competition, what maintains the widely observed patterns of secretion? Recent theory has emphasized the genetic structure of po

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Ferrando, Maria Laura, Alex Gussak, Saskia Mentink, Marcela Fernandez Gutierrez, Peter van Baarlen, and Jerry Mark Wells. "Active Human and Porcine Serum Induce Competence for Genetic Transformation in the Emerging Zoonotic Pathogen Streptococcus suis." Pathogens 10, no. 2 (2021): 156. http://dx.doi.org/10.3390/pathogens10020156.

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The acquisition of novel genetic traits through natural competence is a strategy used by bacteria in microbe-rich environments where microbial competition, antibiotics, and host immune defenses threaten their survival. Here, we show that virulent strains of Streptococcus suis, an important zoonotic agent and porcine pathogen, become competent for genetic transformation with plasmid or linear DNA when cultured in active porcine and human serum. Competence was not induced in active fetal bovine serum, which contains less complement factors and immunoglobulins than adult serum and was strongly re

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Rennison, Diana J., Seth M. Rudman, and Dolph Schluter. "Parallel changes in gut microbiome composition and function during colonization, local adaptation and ecological speciation." Proceedings of the Royal Society B: Biological Sciences 286, no. 1916 (2019): 20191911. http://dx.doi.org/10.1098/rspb.2019.1911.

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The processes of local adaptation and ecological speciation are often strongly shaped by biotic interactions such as competition and predation. One of the strongest lines of evidence that biotic interactions drive evolution comes from the repeated divergence of lineages in association with repeated changes in the community of interacting species. Yet relatively little is known about the repeatability of changes in gut microbial communities and their role in adaptation and divergence of host populations in nature. Here we use three cases of rapid, parallel adaptation and speciation in freshwate

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Trienens, Monika, Nancy P. Keller, and Marko Rohlfs. "Fruit, flies and filamentous fungi - experimental analysis of animal-microbe competition using Drosophila melanogaster and Aspergillus mould as a model system." Oikos 119, no. 11 (2010): 1765–75. http://dx.doi.org/10.1111/j.1600-0706.2010.18088.x.

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Hill, Paul W., and Davey L. Jones. "Plant–microbe competition: does injection of isotopes of C and N into the rhizosphere effectively characterise plant use of soil N?" New Phytologist 221, no. 2 (2018): 796–806. http://dx.doi.org/10.1111/nph.15433.

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Hoptroff, Michael J., Simon V. Avery, and Simon Thomas. "Influence of altered plasma membrane fatty acid composition on cesium transport characteristics and toxicity inSaccharomyces cerevisiae." Canadian Journal of Microbiology 43, no. 10 (1997): 954–62. http://dx.doi.org/10.1139/m97-137.

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The influence of altered plasma membrane fatty acid composition on cesium uptake and toxicity was investigated in Saccharomyces cerevisiae. Detailed kinetic studies revealed that both the Vmaxand Kmvalues for Cs+transport increased (by approximately twofold in the latter case) when S. cerevisiae was grown in medium supplemented with the polyunsaturated fatty acid linoleate. In addition, Cs+uptake by linoleate-enriched cells was considerably less sensitive to the competitive effects of other monovalent cations (K+, Rb+, and NH4+) than that by unsupplemented cells. Stimulation of Cs+uptake in th

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Brugger, Silvio D., Sara M. Eslami, Melinda M. Pettigrew, et al. "Dolosigranulum pigrum Cooperation and Competition in Human Nasal Microbiota." mSphere 5, no. 5 (2020). http://dx.doi.org/10.1128/msphere.00852-20.

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ABSTRACT Multiple epidemiological studies identify Dolosigranulum pigrum as a candidate beneficial bacterium based on its positive association with health, including negative associations with nasal/nasopharyngeal colonization by the pathogenic species Staphylococcus aureus and Streptococcus pneumoniae. Using a multipronged approach to gain new insights into D. pigrum function, we observed phenotypic interactions and predictions of genomic capacity that support the idea of a role for microbe-microbe interactions involving D. pigrum in shaping the composition of human nasal microbiota. We ident

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Ford, Suzanne A., Georgia C. Drew, and Kayla C. King. "Immune-mediated competition benefits protective microbes over pathogens in a novel host species." Heredity, November 9, 2022. http://dx.doi.org/10.1038/s41437-022-00569-3.

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AbstractMicrobes that protect against infection inhabit hosts across the tree of life. It is unclear whether and how the host immune system may affect the formation of new protective symbioses. We investigated the transcriptomic response of Caenorhabditis elegans following novel interactions with a protective microbe (Enterococcus faecalis) able to defend against infection by pathogenic Staphylococcus aureus. We have previously shown that E. faecalis can directly limit pathogen growth within hosts. In this study, we show that colonisation by protective E. faecalis caused the differential expre

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Chung, Y. Anny, Po‐Ju Ke, and Peter B. Adler. "Mechanistic approaches to investigate soil microbe‐mediated plant competition." Journal of Ecology, July 3, 2023. http://dx.doi.org/10.1111/1365-2745.14156.

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Qu, Yaobing, Tianzi Qin, Xinjian Shi, et al. "The effects of Epichloë endophytes on the growth and competitiveness of Achnatherum sibiricum are mediated by soil microbe diversity." Journal of Plant Ecology, March 4, 2022. http://dx.doi.org/10.1093/jpe/rtac028.

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Abstract Aims Many grasses are infected by systemic fungal endophytes that occur in aboveground plant tissues. Both aboveground endophytic fungi and belowground soil microbes can influence plant growth, but studies on their simultaneous effects on plant growth and competitiveness are limited. This study aims to investigate whether the role of aboveground endophytic fungi in the growth and competitive ability of the host grasses was influenced by soil microbes. Methods In this study, we used Epichloë endophyte-infected (EI) and endophyte-free (EF) Achnatherum sibiricum as plant materials. A wet

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L’Espérance, Emmy, Lilia Sabrina Bouyoucef, Jessica A. Dozois, and Etienne Yergeau. "Tipping the plant-microbe competition for nitrogen in agricultural soils." iScience, September 2024, 110973. http://dx.doi.org/10.1016/j.isci.2024.110973.

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