Dynamic coexistence driven by physiological transitions in microbial communities

Proceedings of the National Academy of Sciences, Год журнала: 2025, Номер 122(16)

Опубликована: Апрель 17, 2025

Microbial ecosystems are commonly modeled by fixed interactions between species in steady exponential growth states. However, microbes often modify their environments so strongly that they forced out of the state into stressed, nongrowing Such dynamics typical ecological succession nature and serial-dilution cycles laboratory. Here, we introduce a phenomenological model, Community State Model, to gain insight dynamic coexistence due changes physiological states during cyclic succession. Our model specifies preference each along global coordinate, taken be biomass density community, but is otherwise agnostic specific (e.g., nutrient starvation, stress, aggregation), order focus on self-consistency conditions combinations states, “community states,” stable ecosystem. We identify three key features such dynamical communities contrast starkly with steady-state communities: enhanced community stability through staggered dominance different increased tolerance diversity fast growing dominating distinct requirement late-growing species. These features, derived explicitly for simplified models, proposed here as principles aiding understanding complex communities. shifts ecosystem from bottom–up studies based fixed, idealized interspecies interaction top–down accessible macroscopic observables rates total density, enabling quantitative examination community-wide characteristics.

Язык: Английский

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Emerging Trends in Microfluidics Based Devices

Biotechnology Journal, Год журнала: 2020, Номер 15(5)

Опубликована: Фев. 11, 2020

One of the major challenges for scientists and engineers today is to develop technologies improvement human health in both developed developing countries. However, need cost-effective, high-performance diagnostic techniques very crucial providing accessible, affordable, high-quality healthcare devices. In this context, microfluidic-based devices (MFDs) offer powerful platforms automation integration complex tasks onto a single chip. The distinct advantage MFDs lies precise control sample quantities flow rate samples reagents that enable quantification detection analytes with high resolution sensitivity. With these excellent properties, microfluidics (MFs) have been used various applications healthcare, along other biological medical areas. This review focuses on emerging demands MFs different fields such as biomedical diagnostics, environmental analysis, food agriculture research, etc., last three or so years. It also aims reveal new opportunities areas future prospects commercial MFDs.

Язык: Английский

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More than words: the chemistry behind the interactions in the plant holobiont

Environmental Microbiology, Год журнала: 2020, Номер 22(11), С. 4532 - 4544

Опубликована: Авг. 14, 2020

Summary Plants and microbes have evolved sophisticated ways to communicate coexist. The simplest interactions that occur in plant‐associated habitats, i.e., those involved disease detection, depend on the production of microbial pathogenic virulence factors host's immunological response. In contrast, can also be beneficial for their host plants a number ways, including fighting pathogens promoting plant growth. order clarify mechanisms directly these various plant–microbe interactions, we must still deepen our understanding how interkingdom communication systems, which are constantly modulated by resident activity, established and, most importantly, effects span physically separated compartments. Efforts this direction revealed complex interconnected network molecules associated metabolic pathways modulate microbe–microbe regulate diverse ecological responses. Once sufficiently understood, will biotechnologically exploitable, example, use sustainable agriculture. aim review is present latest findings dazzlingly arsenal efficiently mediate specific microbe–plant during development different organs.

Язык: Английский

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Do Mixed-Species Biofilms Dominate in Chronic Infections?–Need for in situ Visualization of Bacterial Organization

Frontiers in Cellular and Infection Microbiology, Год журнала: 2020, Номер 10

Опубликована: Авг. 5, 2020

Chronic infections present a serious economic burden to health-care systems. The severity and prevalence of chronic are continuously increasing due an aging population elevated number lifestyle related diseases such as diabetes. Treatment has proven difficult, mainly the presence biofilms that render bacteria more tolerant toward antimicrobials host immune response. have been described harbor several different bacterial species it hypothesized microscale interactions mixed-species consortia for most natural occurring i.e., aquatic systems industrial settings, but also some commensal human mouth microbiota. However, in is often assumption based on culture-based methods and/or by means molecular approaches, PCR sequencing performed from homogenized bulk tissue samples. These disregard spatial organization community thus valuable information biofilm aggregate composition, organization, possible between lost. Hitherto, only few studies made visual situ presentations infections, which pivotal description distribution, interspecies interaction microscale. In order interact (synergism, commensalism, mutualism, competition, etc.) they need be close proximity each other scale where can affect e.g., solute concentrations. We argue proof mixed scarce compared what seen environmental call debate importance infections.

Язык: Английский

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Advancements in biofilm formation and control in potable water distribution systems: A comprehensive review and analysis of chloramine decay in water systems

Journal of environmental chemical engineering, Год журнала: 2023, Номер 11(6), С. 111377 - 111377

Опубликована: Ноя. 2, 2023

Because of their uncontrolled proliferation, biofilm-based diseases pose severe hazards to human life. Biofilm production makes the immune system resistant antibiotics, emphasizing need prevention in health. When pathogenic bacteria and fungi are injected into people, they develop biofilms cause waterborne illnesses. Understanding methods by which these arise is thus critical for creating techniques removing them from water systems. This overview introduces biofilms, highlighting adhesion detachment phenomena growth basics. Following that, stability drinking distribution systems (DWDS) influence on living organisms explored. review focuses biofilm treatment such as ultrasound, photothermal photodynamic methods, microbubbles, chemical approaches (via nanomaterials). The following section delves most recent physical prevent development, chloramine—a stable utilized DWDS suppress microbial growth—and its decay kinetics. Finally, future study goals recommendations chloramine a viable limiting development presented.

Язык: Английский

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Estimating the Importance of Viral Contributions to Soil Carbon Dynamics

Global Change Biology, Год журнала: 2024, Номер 30(10)

Опубликована: Окт. 1, 2024

ABSTRACT Biogeochemical models for predicting carbon dynamics increasingly include microbial processes, reflecting the importance of microorganisms in regulating movement between soils and atmosphere. Soil viruses can redirect among various chemical pools, indicating a need quantification development soil that explicitly represent viral dynamics. In this opinion, we derive global estimate potentially released from biomass by infections synthesize quantitative budget existing literature includes impacts. We then adapt known mechanisms which influence cycles marine ecosystems into soil‐explicit framework. Finally, explore diversity virus–host interactions during infection conceptualize how mode may impact fate. Our synthesis highlights key knowledge gaps hindering incorporation cycling research generates specific hypotheses to test pursuit better quantifying explain ecosystem‐scale fluxes. The identifying critical drivers behind dynamics, including these elusive but likely pervasive redistribution, becomes more pressing with climate change.

Язык: Английский

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Metagenomic and ¹⁴C tracing evidence for autotrophic microbial CO₂ fixation in paddy soils

Environmental Microbiology, Год журнала: 2020, Номер 23(2), С. 924 - 933

Опубликована: Авг. 22, 2020

Summary Autotrophic carbon dioxide (CO 2 ) fixation by microbes is ubiquitous in the environment and potentially contributes to soil organic (SOC) pool. However, multiple autotrophic pathways of microbial assimilation paddy soils remain poorly characterized. In this study, we combine metagenomic analysis with 14 C‐labelling investigate all known CO mechanisms five typical from southern China. Marker genes six are detected samples, which dominated cbbL (67%–82%) coding ribulose‐bisphosphate carboxylase large chain Calvin cycle. These marker associated a broad range phototrophic chemotrophic genera. Significant amounts C‐CO assimilated into SOC (74.3–175.8 mg C kg −1 biomass (5.2–24.1 after 45 days incubation, where more than 70% C‐SOC was concentrated relatively stable humin fractions. results show that contain genetic potential for spreading over taxonomic ranges, can incorporate atmospheric components, ultimately contribute

Язык: Английский

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Leaf surface microtopography shaping the bacterial community in the phyllosphere: evidence from 11 tree species

Microbiological Research, Год журнала: 2021, Номер 254, С. 126897 - 126897

Опубликована: Окт. 22, 2021

Язык: Английский

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Microbial Biofilm for Soil Health, Plant Growth, and Productivity under Multi Stress. A Review

IOP Conference Series Earth and Environmental Science, Год журнала: 2023, Номер 1162(1), С. 012008 - 012008

Опубликована: Апрель 1, 2023

Abstract The increase in temperature due to global warming leads a rise abiotic and biotic stresses for plants. Biofilms can aid plants overcoming multiple environmental stresses. purpose of this article is examine biofilm technology, mechanisms, efficacy assisting plant performance under methodology used write literature review based on references that be accessed online via Science Direct, Google Scholar, scopus.com, other sources. results demonstrated interaction between microorganisms the rhizospheres could coping with stress caused by formation root surface consortium rhizosphere. Biofilm provides numerous benefits plants, including improved soil health, protection from pathogens, promotion growth, assistance nutrient absorption, decreased use inorganic fertilizer, increased tolerance. technology promising management strategy adaptation stresses, enhancing growth productivity, promoting health.

Язык: Английский

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Magnetic nanoparticle interaction with a hydrogel in an oscillating magnetic field

Physics of Fluids, Год журнала: 2024, Номер 36(1)

Опубликована: Янв. 1, 2024

A study was conducted of the effect superparamagnetic nanoparticles on a hydrogel in presence an oscillating magnetic field directed tangent to surface. The causes particles oscillate laterally hydrogel, with some adhering matrix and other moving freely through pore spaces. analysis performed for three-phase matrix-water-particles model, which solvent (water) are interacting continua discrete phase. examined fluid elasticity wave propagation due no-slip boundary condition acting under transversely field. memory within results deviation minimum maximum shear rates observed one half oscillation period from those period. behavior different values governing dimensionless parameters assessed. Reynolds number, Deborah ratio relaxation retardation times were all have significant influence viscoelastic response hydrogel. phase difference between water oscillations is strongly influenced by interaction force coefficient, free captured particles. system found approach asymptotic state at high independent value number.

Язык: Английский

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