Semiconductor photocatalyst films protecting stone cultural relics against microbial weathering

Опубликована: Май 8, 2025

Abstract Microorganisms can colonize stone surfaces and metabolize them to produce pigments corrosive products, thus causing the weathering of cultural relics. Herein, we show that caused by a representative microorganism ( Scenedesmus obliquus ) be prevented coating with films comprising semiconducting photocatalytic nanocomposite, BiVO 4 /Ti 2 NT x -TiO . The compositing (a narrow-bandgap semiconductor) Ti -doped TiO two-dimensional layered results in an extended visible light absorption range reduced bandgap. incorporation increases efficiency energy utilization reactive oxygen species • OH, O − yield enhancing electron conductivity enabling rapid transfer photogenerated electrons (Ti ). produced upon irradiation selectively attack kill harmful Cyanobacteria species, which feature cyst-like structure composed phospholipids proteins, resulting release intracellular nutrients promotes growth beneficial Proteobacteria , Actinobacteria Bacteroidota Patescibacteria Thus, this work paves way for protection objects, including those classified as heritage, inspires further development semiconductor photocatalysts their engineering applications.

Язык: Английский

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Advances in Diversity, Evolutionary Dynamics and Biotechnological Potential of Restriction-Modification Systems

Microorganisms, Год журнала: 2025, Номер 13(5), С. 1126 - 1126

Опубликована: Май 14, 2025

Restriction-modification systems (RMS) are ubiquitous in prokaryotes and serve as primitive immune-like mechanisms that safeguard microbial genomes against foreign genetic elements. Beyond their well-known role sequence-specific defense, RMS also contribute significantly to genomic stability, drive evolutionary processes, mitigate the deleterious effects of mutations. This review provides a comprehensive synthesis current insights into RMS, emphasizing structural functional diversity, ecological roles, expanding applications biotechnology. By integrating recent advances with an analysis persisting challenges, we highlight critical contributions both fundamental microbiology practical biomedicine industrial Furthermore, discuss emerging research directions particularly light novel technologies increasing importance genetics addressing global health environmental issues.

Язык: Английский

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Soil microbial genomic responses to aridity-driven elemental imbalance across global biomes

Research Square (Research Square), Год журнала: 2025, Номер unknown

Опубликована: Май 15, 2025

Aridification is known to disrupt soil biogeochemical cycles by altering the stoichiometry of key elements, such as carbon (C), nitrogen (N) and phosphorus (P). However, how microbiome metabolically responds these imbalances, resulting implications for terrestrial ecosystem services, remain virtually unknown. By analyzing samples from 200 ecosystems across globally distributed biomes, our results revealed an overall microbial genomic adjustment elemental imbalances driven aridity. Genes involved in anabolism were promoted with aridification, whereas those associated catabolism suppressed. Thus, while genes encoding extracellular enzymes responsible degradation litter organic matter decreased, related RNA transcription synthesis transport intracellular proteins essential resistance growth increased. Collectively, findings highlighted that aridity-driven are strongly shifts metabolism anabolism, reflecting a survival strategy prioritizes over energy nutrient acquisition under global-scale aridification.

Язык: Английский

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A Critical Review: Unearthing the Hidden Players—The Role of Extremophilic Fungi in Forest Ecosystems

Forests, Год журнала: 2025, Номер 16(5), С. 855 - 855

Опубликована: Май 20, 2025

Often thought of as a mesic paradise, forest ecosystems are mosaic microhabitats with temporal oscillations that cause significant environmental stresses, providing habitats for extremophilic and extremotolerant fungi. Adapted to survive thrive under conditions lethal most mesophiles (e.g., extreme temperatures, pH, water potential, radiation, salinity, nutrient scarcity, pollutants), these species increasingly recognized vital yet underappreciated elements biodiversity function. This review examines the current understanding roles fungi in forests, scrutinizing their presence critical eye. Particularly severe conditions, play crucial role ecosystems, they significantly enhance decomposition cycling, foster mutualistic interactions plants increase stress resilience. helps maintain ecosystem stability. We examine definition “extreme” within settings, survey known diversity distribution across various niches (cold climates, fire-affected areas, acidic soils, canopy surfaces, polluted sites), delve into possible ecological functions, including recalcitrant matter, cycling stress, (pathogenesis, endophytism, perhaps mycorrhizae), bioremediation, contributions soil formation. However, stresses methodological difficulties, information gaps, field-based natural biases. recommend overcoming cultural constraints, enhancing functional annotation “omics” data, planning investigations clarify specific activities cryptic creatures matrix further advance field. Here, we demonstrate moving beyond simple identification deeper function will enable us more fully appreciate value particularly relation disturbances climate change.

Язык: Английский

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Mechanisms of Soil Microbial Community Adaptation in Cold-Region Wetlands Under Retrogressive Succession

Life, Год журнала: 2025, Номер 15(5), С. 817 - 817

Опубликована: Май 20, 2025

Retrogressive succession alters soil conditions and microbial community dynamics in cold-region wetlands, yet its ecological implications remain understudied. This study explored the structure function of communities across three successional stages: swamp (SP), swamped meadow (SM), (MW). High-throughput 16S rRNA gene sequencing identified 2852 operational taxonomic units (OTUs), with 1682 shared among all stages (58.85%). Alpha diversity indices, including Shannon, Chao, ACE, Sobs, were significantly higher MW, Shannon index increasing by approximately 32% compared to SP, indicating enhanced richness evenness. In contrast, Simpson Coverage indices highest SP. Proteobacteria, Actinobacteriota, Acidobacteriota dominant phyla, showing distinct distributions stages. Beta analysis (PCoA NMDS) revealed clear separation communities. Soil organic carbon (SOC), pH, water content (SWC), cation exchange capacity (CEC), bulk density (BD) influenced composition distribution. Functional prediction using FAPROTAX BugBase indicated a shift from anaerobic metabolism, nitrogen fixation, cellulolysis SP aerobic chemoheterotrophy stress tolerance MW. These results demonstrate that adapt changing environments during retrogressive succession, highlighting their role ecosystem resilience wetlands.

Язык: Английский

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Lag in pollutant removal efficiency relative to microbial community dynamics in a denitrifying phosphorus removal bioreactor

Chemical Engineering Journal, Год журнала: 2024, Номер 497, С. 154498 - 154498

Опубликована: Авг. 3, 2024

Язык: Английский

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Effects of induced changes in salinity on inland and coastal water ecosystems: editor summary

Hydrobiologia, Год журнала: 2023, Номер 850(20), С. 4343 - 4349

Опубликована: Сен. 12, 2023

Язык: Английский

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Overview of microbial communities in the surface water of the Seine River to understand their response to climate change and human activities

Aquatic Ecology, Год журнала: 2024, Номер 58(4), С. 1067 - 1089

Опубликована: Июль 16, 2024

Abstract Diverse microbial communities play a crucial role in maintaining the proper functioning of river ecosystems and are considered important indicators water quality. Although Seine River being heavily impacted by human activities, little is known about its surface waters. In order to monitor quality promote sustainable use, we studied diversity using high-throughput sequencing technology, explored their relationships with physico-chemical properties. The dominant phyla identified were Proteobacteria , Actinobacteriota Bacteriodota Cyanobacteria . presence Alphaproteobacteria Gammaproteobacteria indicates that nutrient profile mainly determined recalcitrant organic compounds present WWTP effluents. Bacterial showed significant temporal variability highly difference bacterial composition between 2020 2021, probably due variations flow favoring growth. Summer displayed higher activity abundance than autumn, attributed temperature orthophosphate content. Spatial variation was observed sites upstream downstream Paris, as well before after Valenton-WWTP, subject an accumulation phenomenon wastewater treatment. Further assessment emerging contaminants other pollutants required better understand these variations. These results provide basic understanding community River, serving reference for assessing impact implementing new disinfection techniques near future. Graphical abstract

Язык: Английский

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Adaptation strategies of insects to their environment by collecting and utilizing external microorganisms

Integrative Zoology, Год журнала: 2024, Номер unknown

Опубликована: Июль 24, 2024

Insects adjust their adaptive capacity to biotic and abiotic stresses by collecting utilizing microorganisms from the environment diet. are ubiquitous in almost all ecosystems contribute significantly ecosystem stability (Schowalter et al. 2018; Crespo-Pérez 2020; Sun 2023; Sveen 2023). Due climate change human activities, insects constantly exposed emerging stresses, compelling them develop physiological, behavioral, morphological adaptations withstand these challenges (Behmer 2009; Sheikh 2017; Xiong 2022; Bai While genomic evolution natural selection stable strategies for accumulating changes, processes often take thousands or even millions of years (Lamichhaney 2015; Lamichhaney 2016; Nuismer 2022), making it challenging adapt swiftly stresses. There long-term dynamic interactions between associated microorganisms, which readily incorporated into insect bodies onto body surfaces extensively involved various physiological activities host (Douglas Hosokawa & Fukatsu 2020). Generally, sites on inhabited diverse leading extensive competition among them. Thus, can theoretically exploit enhance fitness adaptability. Indeed, recent studies have discovered similar cases, providing new insights functions insect-associated adaption (Fig. 1). Under normal circumstances, gut-beneficial microbes outcompete harmful ones perform that aid host, including breaking down complex nutrients, fostering growth development, detoxifying compounds (Tellez 2006; Kikuchi 2012; Jordan Tomberlin 2021; Zhang 2024c). For instance, changes gut microbial composition Bactrocera dorsalis affect metabolism transcriptional regulation, thereby promoting (Wang They also shape gut-associated lymphoid tissue assembly, educate immune system, impact intestinal mucosal barrier integrity Xu 2018), insect's ability detoxify plant-released defense chemicals (Pincebourde Salem Wang Several derived silkworm guts exhibit probiotic potential resistance diseases toxins, insecticides (Jordan Liang 2022). However, as mentioned earlier, survival is changing, especially invasive whose living environments undergo drastic during invasion process. Some respond along with may rapidly increase abundance host. Recently, found Hyphantria cunea recruit (Bacteroides, Blautia, Coprococcus) help plant, Metasequoia glyptostroboides, its expansion range southern China (Zhang 2024a). This suggests adjusting provides an alternative strategy plants promotes The cuticle another arena thrive. thought be primary source microorganisms. reared harbor mainly (Zhao 2024), whereas ectomicrobiome adult Drosophila melanogaster vials consists bacteria excreta (Hong On other hand, entomopathogenic fungi infect directly penetrating cuticle, certain residing epidermis unsurprisingly against fungal pathogens producing antibiotics competing nutrients space surface (Levy 1992; Currie 1999; Legrifi surprising "intentionally" carry enrich beneficial inhibit pathogenic fungi. example, Zhao bacterium Mammaliicoccus sciuri, isolated silkworm's completely inhibited spore germination penetration fungi, Metarhizium robertsii Beauveria bassiana, secreting enzymes destroy spores 2024). Notably, this microorganism exclusively plant mulberry leaves re-colonize after being lost molting. Another example involves fungus-growing ants carrying a filamentous (actinomycete) Streptomyces genus produces cyclic depsipeptide (dentigerumycin) targeting specialized garden-parasite Escovopsis (Currie Oh 2009). Although frequent molting development removes most some cuticles pouch structures ectomycorrhizal symbionts seed bacterial cells post-molting (Janke then facilitates rapid recombination ectomicrobiomes. Even without such been shown gather surrounding resist pathogens. demonstrates benefit, but more cases remain discovered. Understanding how harness adverse environmental conditions crucial both theoretical practical applications. one foundation understanding recruiting disrupting manipulating equilibrium could facilitate effective pest control safeguard crops. Additionally, isolating extracting applied food, medical, industries improve overall quality life (Kerr 1999). already developed (Tu Ma ecological regulation Coolen Picciotti 2024b), drug discovery (Chevrette 2019; van Moll Baranova biomass decomposition (Skelton Diksha Future research directions should explore temporal spatial transmission within outside essential components pathways adaptation was supported National Natural Science Foundation (32160666 32370523) Guizhou Province Technology Support Project ([2022] General 239).

Язык: Английский

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Decoding Bacterial Communication: Intracellular Signal Transduction, Quorum Sensing, and Cross-Kingdom Interactions

Microbiological Research, Год журнала: 2024, Номер 292, С. 127995 - 127995

Опубликована: Дек. 7, 2024

Язык: Английский

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