Bacillus siamensis Targeted Screening from Highly Colitis-Resistant Pigs Can Alleviate Ulcerative Colitis in Mice

Research, Год журнала: 2024, Номер 7

Опубликована: Янв. 1, 2024

Ulcerative colitis (UC) is often accompanied by intestinal inflammation and disruption of epithelial structures, which are closely associated with changes in the microbiota. We previously revealed that Min pigs, a native Chinese breed, more resistant to dextran sulfate sodium (DSS)-induced than commercial Yorkshire pigs. Characterizing microbiota pigs would allow identification core microbes confer resistance. By analyzing linked disease course we observed

Язык: Английский

---

Weak salinization alleviates the harmful impact of cyanobacteria on water fleas

Environmental Pollution, Год журнала: 2025, Номер 372, С. 126002 - 126002

Опубликована: Март 5, 2025

Язык: Английский

---

A test for microbiome-mediated rescue via host phenotypic plasticity in Daphnia

Proceedings of the Royal Society B Biological Sciences, Год журнала: 2025, Номер 292(2044)

Опубликована: Апрель 1, 2025

Phenotypic plasticity is a primary mechanism by which organismal phenotypes shift in response to the environment. Host-associated microbiomes often change considerably environmental variation, and these shifts could facilitate host phenotypic plasticity, adaptation, or rescue populations from extinction. However, it unclear whether changes microbiome composition contribute limiting our knowledge of underlying mechanisms and, ultimately, fate inhabiting changing environments. In this study, we examined responses 20 genetically distinct Daphnia magna genotypes exposed non-toxic toxic diets containing Microcystis , cosmopolitan cyanobacterium common stressor for Daphnia. exhibited significant survival, reproduction population growth rates upon exposure . effects on were limited, with effect being differences abundance observed across five bacterial families. Moreover, there was no correlation between magnitude plasticity. Our results suggest that played negligible role driving microbiome-mediated rescue.

Язык: Английский

---

Bridging Ecology and Microbiomes: Applying Ecological Theories in Host-associated Microbial Ecosystems

Current Clinical Microbiology Reports, Год журнала: 2025, Номер 12(1)

Опубликована: Апрель 15, 2025

Abstract Purpose of Review This review explores the application classical ecological theory to host-associated microbiomes during initial colonization, maintenance, and recovery. We discuss unique challenges applying these theories host factors consider going forward. Recent Findings studies community ecology principles continue demonstrate a role for both selective stochastic processes in shaping microbiomes. However, frameworks developed describe dynamics homeostasis do not necessarily apply diseased or highly perturbed states, where large variations can potentially lead alternate stable states. Summary Despite providing valuable insights, has some challenges. The integration host-specific factors, such as genotype immune models is crucial understanding microbiome assembly stability, which could improve our ability predict outcomes health.

Язык: Английский

---

Tolerance to environmental pollution in the freshwater crustacean Asellus aquaticus: A role for the microbiome

Environmental Microbiology Reports, Год журнала: 2024, Номер 16(3)

Опубликована: Май 23, 2024

Abstract Freshwater habitats are frequently contaminated by diverse chemicals of anthropogenic origin, collectively referred to as micropollutants, that can have detrimental effects on aquatic life. The animals' tolerance micropollutants may be mediated their microbiome. If polluted environments select for contaminant‐degrading microbes, the acquisition such microbes host increase its pollution. Here we tested potential microbiome growth and survival juvenile Asellus aquaticus , a widespread freshwater crustacean. Using faecal transplants, provided newly hatched juveniles with isolated from donor adults reared in either clean or micropollutant‐contaminated water and, after transplantation, recipient were without micropollutants. experiment revealed significant negative effect isopods regardless received had altered composition bacterial component donors' microbiome, which turn influenced recipients. Hence, show relatively high environmental concentrations reduce alter A. but no evidence is modulated

Язык: Английский

---

Microbial artists: the role of parasite microbiomes in explaining colour polymorphism among amphipods and potential link to host manipulation

Journal of Evolutionary Biology, Год журнала: 2024, Номер 37(9), С. 1009 - 1022

Опубликована: Июль 11, 2024

Abstract Parasite infections are increasingly reported to change the microbiome of parasitized hosts, while parasites bring their own microbes what can be a multi-dimensional interaction. For instance, recent hypothesis suggests that microbial communities harboured by may play role in well-documented ability many manipulate host phenotype, and explain why degree which phenotype is altered varies among conspecific parasites. Here, we explored whether microbiomes both hosts associated with variation manipulation Using colour quantification methods applied digital images, investigated uninfected Transorchestia serrulata amphipods, as well amphipods infected Plagiorhynchus allisonae acanthocephalans dilepidid cestode. We then characterized bacteriota amphipod parasites, looking for correlations between bacterial taxa found large colours, weak support direct impact on hosts. Conversely, most interestingly, parasite’s was more strongly correlated potential amphipod-associated bacteria well. Some have synthesize pigments, propose they interact determination amphipods. This study provides correlational an association evolution host–parasite interactions generally.

Язык: Английский

---

A test for microbiome-mediated rescue via host phenotypic plasticity inDaphnia

Опубликована: Авг. 15, 2024

Abstract Phenotypic plasticity is a primary mechanism by which organismal phenotypes shift in response to the environment. Host-associated microbiomes often exhibit considerable shifts environmental variation and these could facilitate host phenotypic plasticity, adaptation, or rescue populations from extinction. However, it unclear how much microbiome composition contribute limiting our knowledge of underlying mechanisms and, ultimately, fate inhabiting changing environments. In this study, we examined responses 20 genetically distinct Daphnia magna clones exposed non-toxic toxic diets containing Microcystis , cosmopolitan cyanobacteria common stressor for Daphnia. exhibited significant survival, reproduction, population growth rates exposure. effects exposure on were limited, with effect being differences abundance observed across five bacterial families. Moreover, there was no correlation between magnitude plasticity. Our results suggest that played negligible role driving microbiome-mediated rescue. One sentence summary exhibits individual population-level stressor, yet are not correlated

Язык: Английский

---

Dynamic changes in the avian gut microbiome in response to diverse lifestyles

Ibis, Год журнала: 2024, Номер unknown

Опубликована: Дек. 28, 2024

Investigating the intestinal microbiome and its interactions with host is crucial for understanding adaptation mechanisms, functional dynamics co‐evolution of these microbiomes in wild birds. This review examines how gut interact their avian hosts, focusing on establishment microbiomes, dynamic changes occurring throughout different life stages factors that influence microbial variations. It also explores evolutionary relationship between birds symbionts, identifies key areas future research microbes to advance wildlife microbiology.

Язык: Английский

---

Microbial transfer through fecal strings on eggs affect leaf beetle microbiome dynamics

Research Square (Research Square), Год журнала: 2024, Номер unknown

Опубликована: Апрель 16, 2024

Background Gut microbiomes of holometabolous insects can be strongly affected by the metamorphosis. Previous studies suggest that microbiome colonization and community development often rely on specialized transmission routes between host life stages, but there is a lack comparative microbial dynamics due to different mechanisms. Results We compared gut across stages for five Galerucella species differ in potential transfer mechanism sequencing amplicons 16S rRNA gene. Females three studied place fecal string top egg, which may improve microbes, whereas females two other do not such string. found α-diversity was more stable placer-species with non-fecal placer-species. Moreover, were also consistent differences species, where we identified multiple taxa each consistently appeared all stages. Conclusions Fecal strings placed eggs seem play an important role diversity dynamic bacteria vertical insect generations. Alternative, less efficient, occur

Язык: Английский

---

Emergence of Slc11 clade MCbgut: a parsimonious hypothesis for the dawn of Lactobacillales in the gut of early vertebrates

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Июнь 5, 2024

Abstract The Lactobacillales (LB) stand apart among bacterial orders, using manganese (Mn) instead of iron to support their growth and swiftly ferment complex foods while acidifying environment. present work investigates whether a shift in the use Mn could mark origin LB. Transmembrane carriers ubiquitous Slc11 family play key roles LB physiology by catalyzing proton-dependent import. In prior studies, clade found (MntH Cb, MCb) showed both remarkable structural plasticity highly efficient uptake, another clade, MCg1, demonstrated divergent evolution coinciding with emergence genera (e.g., Bordetella , Achromobacter ). Herein, MCb is subdivided sister groups: ie gut . derives directly from MCa, pointing an intermediate stage predominates marine Bacillaceae, more conserved than lacks that typify carriers, responds differently identical mutagenesis. Exchanging /MCb amino acid residues at sites distinguish these clades conformation-dependent effects templates 3D location targeted carrier structure together suggest mechanism open inner gate, release into cytoplasm, differs between Building on established phylogeny for Enterococcus revealed pair genes encoding was common ancestor LB, as gu1 gu2 exhibit distinct dynamics properties. These data are discussed examining + emerge upper early vertebrates (ca. 540 mya), through genome contraction toward Mn-centrism, they specialized gastric aids favoring stomach establishment jawed bi-directional communication host nervous, endocrine immune systems.

Язык: Английский

---