Microbial diversity in mountain-dwelling amphibians: The combined effects of host and climatic factors

iScience, Год журнала: 2024, Номер 27(6), С. 109907 - 109907

Опубликована: Май 3, 2024

Comprehending the determinants of host-associated microbiota is pivotal in microbial ecology. Yet, links between climatic factors and variations necessitate further clarification. Mountain-dwelling amphibians, with limited dispersal abilities, serve as valuable models for addressing these questions. Our study, using 126 amphibian-associated samples (64 gut 62 skin) 101 environmental (51 soil 50 water) from eastern Tibetan Plateau, revealed host primary drivers microbiota. However, contributed to additional beta-diversity skin function. Water were identified a significant contributor microbiomes, their climate-driven mediating an indirect association These findings extend our understanding assembly emphasizing significance evaluating impact climate change on animals.

Язык: Английский

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Something in the water: aquatic microbial communities influence the larval amphibian gut microbiota, neurodevelopment and behaviour

Proceedings of the Royal Society B Biological Sciences, Год журнала: 2024, Номер 291(2017)

Опубликована: Фев. 28, 2024

Microorganisms colonize the gastrointestinal tract of animals and establish symbiotic host-associated microbial communities that influence vertebrate physiology. More specifically, these gut neurodevelopment through microbiota-gut-brain (MGB) axis. We tested hypothesis larval amphibian is affected by aquatic community present in their housing water. Newly hatched Northern Leopard Frog ( Lithobates pipiens ) tadpoles were raised pond water was unmanipulated (natural) or autoclaved. Tadpoles autoclaved had a microbiota with reduced bacterial diversity altered composition, decreased behavioural responses to sensory stimuli, larger overall body mass, relatively heavier brains brain shape when compared natural Further, composition associated tadpole measurements. Our results suggest behaviour development, providing strong support for occurrence MGB axis amphibians. Lastly, dramatic role played on should be considered future wildlife conservation efforts.

Язык: Английский

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Temperature-dependent effects of microplastics on sediment bacteriome and metabolome

Chemosphere, Год журнала: 2024, Номер 350, С. 141190 - 141190

Опубликована: Янв. 10, 2024

Язык: Английский

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Dual stressors of infection and warming can destabilize host microbiomes

Philosophical Transactions of the Royal Society B Biological Sciences, Год журнала: 2024, Номер 379(1901)

Опубликована: Март 18, 2024

Climate change is causing extreme heating events and intensifying infectious disease outbreaks. Animals harbour microbial communities, which are vital for their survival fitness under stressful conditions. Understanding how microbiome structures in response to infection warming may be important forecasting host performance global change. Here, we evaluated alterations the microbiomes of several wild

Язык: Английский

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The host phylogeny and climate determine the gut bacteria of global insects

The Science of The Total Environment, Год журнала: 2025, Номер 966, С. 178812 - 178812

Опубликована: Фев. 1, 2025

Язык: Английский

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Phylosymbiosis and Parallel Geographical Patterns in the Gut Microbiota of Desert‐Dwelling Amphibians and Reptiles

Integrative Zoology, Год журнала: 2025, Номер unknown

Опубликована: Фев. 10, 2025

ABSTRACT Variation patterns in gut microbial diversity among host species and populations offer valuable insights into the mechanisms underlying environment–host–microbiome interactions. However, extent to which phylogeny geography drive these variation animal microbiota remains an open question. Amphibians reptiles are important models address this issue. Using 194 samples of three amphibian four reptile inhabiting Tarim Desert, we demonstrated phylosymbiosis animals, was associated with heterogeneous selection dispersal limitation. In interpopulation comparisons, Bufotes pewzowi Teratoscincus przewalskii exhibited geography‐dependent variations their microbiota, particularly relation longitude annual precipitation. These geographical were linked microbiota. Interestingly, B. T. showed parallel longitude, suggesting common selective pressures on Finally, found genetic background did not account for pattern even though it also factors. This suggested environment–microbe interaction as a potential independent ecological pathway mediating associations between environment animals. Overall, findings extend our understanding shed light mechanisms.

Язык: Английский

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Gut feeling: host and habitat as drivers of the microbiome in blackbuck Antilope cervicapra

Wildlife Biology, Год журнала: 2025, Номер unknown

Опубликована: Фев. 21, 2025

The gut microbiome can be shaped by both intrinsic host factors and extrinsic environmental factors. However, the relative importance of in microbial composition has rarely been investigated, particularly for a single across its natural range. Here, we characterise an endemic, endangered antelope, blackbuck or Antilope cervicapra . We evaluated influence seven predictor variables, which were classified into factors, on microbiome. are nucleotide diversity (mitochondrial nuclear) population density, whereas temperature, precipitation, distance to human settlement anthropogenic land‐use. determined these variables explains greater variation within (α‐diversity) between (β‐diversity) hosts. analysed n = 60 hosts from ten different populations India. recorded 11 800 unique OTUs 30 known phyla 2.9 million reads. find average 2056 per individual, with Bacillota Bacteroidota being most dominant phyla. Overall, also show that genetic (intrinsic) is more important than their environment (extrinsic) within‐ between‐host blackbuck. Our results suggest increase relatedness lead decrease composition. Therefore, conservation efforts should directed not only preserve habitats but pool populations, will positively impact survival through diverse microbiomes.

Язык: Английский

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The impacts of ocean acidification, warming and their interactive effects on coral prokaryotic symbionts

Environmental Microbiome, Год журнала: 2023, Номер 18(1)

Опубликована: Июнь 7, 2023

Abstract Background Reef-building corals, the foundation of tropical coral reefs, are vulnerable to climate change e.g. ocean acidification and elevated seawater temperature. Coral microbiome plays a key role in host acclimatization maintenance holobiont’s homeostasis under different environmental conditions, however, response patterns prokaryotic symbionts and/or warming rarely known at metatranscriptional level, particularly knowledge interactive persistent effects is limited. Using branching Acropora valida massive Galaxea fascicularis as models lab system simulating extreme (pH 7.7) (32 °C) future, we investigated changes situ active community gene expression corals under/after (6/9 d) (A), (H) acidification–warming (AH) by metatranscriptome analysis with pH8.1, 26 °C control. Results A, H AH increased relative abundance pathogenic bacteria. Differentially expressed genes (DEGs) involved virulence, stress resistance, heat shock proteins were up-regulated. Many DEGs photosynthesis, carbon dioxide fixation, amino acids, cofactors vitamins, auxin synthesis down-regulated. A broad array new carbohydrate metabolism energy production emerged after treatment. Different G. A. suggested, well combined effects. Conclusions The metatranscriptome-based study indicates that might coral’s microbial diversity functional towards more destabilized coral-microbes symbioses, show These findings will aid comprehension ability for future change.

Язык: Английский

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Assessing the contribution of bacteria to the heat tolerance of experimentally evolved coral photosymbionts

Environmental Microbiology, Год журнала: 2023, Номер 25(12), С. 3298 - 3318

Опубликована: Окт. 17, 2023

Coral reefs are extremely vulnerable to ocean warming, which triggers coral bleaching-the loss of endosymbiotic microalgae (Symbiodiniaceae) from tissues, often leading death. To enhance climate resilience, the symbiont, Cladocopium proliferum was experimentally evolved for >10 years under elevated temperatures resulting in increased heat tolerance. Bacterial 16S rRNA gene metabarcoding showed composition intra- and extracellular bacterial communities heat-evolved strains significantly different that wild-type strains, suggesting bacteria responded temperatures, may even play a role C. thermal assess whether microbiome transplantation could tolerance sensitive proliferum, we transplanted strain subjected it acute stress. Microbiome resulted incorporation only 30 low-abundance into cultures, while relative abundance 14 pre-existing doubled inoculated versus uninoculated samples. Inoculation with either or boosted growth, although no difference observed between two inoculation treatments. This study provides evidence Symbiodiniaceae-associated respond selection contribute adaptation change.

Язык: Английский

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Temperature and the microbial environment alter brain morphology in a larval amphibian

Journal of Experimental Biology, Год журнала: 2023, Номер 226(12)

Опубликована: Май 26, 2023

Understanding how the global climate impacts physiology of wildlife animals is importance. Amphibians are particularly sensitive to change, and it hypothesized that rising temperatures impair their neurodevelopment. Temperature influences composition gut microbiota, which critical host neurodevelopment through microbiota-gut-brain (MGB) axis. Most research investigating link between microbiota occurs in germ-free mammalian model systems, leaving nature MGB axis non-mammalian unclear. Here, we tested hypothesis temperature microbial environment tadpoles were raised shapes neurodevelopment, possibly Newly hatched green frog (Lithobates clamitans) natural pond water or autoclaved water, serving as an experimental manipulation by reducing colonizing microbes, at three different temperatures: 14, 22 28°C. Neurodevelopment was analyzed measures relative brain mass morphology structures interest. We found tadpole development warmer increased optic tectum width length. Further, Additionally, interaction treatments altered diencephalon Lastly, variation associated with diversity abundance individual bacterial taxa. Our results indicate both environmental communities influence shape. Furthermore, provide some first evidence for amphibians.

Язык: Английский

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