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Altitude-dependent agro-ecologies impact the microbiome diversity of scavenging indigenous chicken in Ethiopia. 海拔高度依赖性农业生态对埃塞俄比亚土鸡微生物组多样性的影响
IF 13.8 1区 生物学
Microbiome Pub Date : 2024-07-23 DOI: 10.1186/s40168-024-01847-4
Laura Glendinning, Xinzheng Jia, Adebabay Kebede, Samuel O Oyola, Jong-Eun Park, Woncheoul Park, Abdulwahab Assiri, Jacob Bak Holm, Karsten Kristiansen, Jianlin Han, Olivier Hanotte
{"title":"Altitude-dependent agro-ecologies impact the microbiome diversity of scavenging indigenous chicken in Ethiopia.","authors":"Laura Glendinning, Xinzheng Jia, Adebabay Kebede, Samuel O Oyola, Jong-Eun Park, Woncheoul Park, Abdulwahab Assiri, Jacob Bak Holm, Karsten Kristiansen, Jianlin Han, Olivier Hanotte","doi":"10.1186/s40168-024-01847-4","DOIUrl":"10.1186/s40168-024-01847-4","url":null,"abstract":"<p><strong>Background: </strong>Scavenging indigenous village chickens play a vital role in sub-Saharan Africa, sustaining the livelihood of millions of farmers. These chickens are exposed to vastly different environments and feeds compared to commercial chickens. In this study, we analysed the caecal microbiota of 243 Ethiopian village chickens living in different altitude-dependent agro-ecologies.</p><p><strong>Results: </strong>Differences in bacterial diversity were significantly correlated with differences in specific climate factors, topsoil characteristics, and supplemental diets provided by farmers. Microbiota clustered into three enterotypes, with one particularly enriched at high altitudes. We assembled 9977 taxonomically and functionally diverse metagenome-assembled genomes. The vast majority of these were not found in a dataset of previously published chicken microbes or in the Genome Taxonomy Database.</p><p><strong>Conclusions: </strong>The wide functional and taxonomic diversity of these microbes highlights their importance in the local adaptation of indigenous poultry, and the significant impacts of environmental factors on the microbiota argue for further discoveries in other agro-ecologies. Video Abstract.</p>","PeriodicalId":18447,"journal":{"name":"Microbiome","volume":null,"pages":null},"PeriodicalIF":13.8,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11267795/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141752061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The plasma viral communities associate with clinical profiles in a large-scale haematological patients cohort. 大规模血液病患者队列中的血浆病毒群与临床特征的关联。
IF 13.8 1区 生物学
Microbiome Pub Date : 2024-07-23 DOI: 10.1186/s40168-024-01855-4
Shuai Ma, Yuyao Yin, Yifan Guo, Chaoqun Yao, Siqi Xu, Qingqing Luo, Guankun Yin, Shuyi Wang, Qi Wang, Hongbin Chen, Ruobing Wang, Longyang Jin, Guanxiang Liang, Hui Wang
{"title":"The plasma viral communities associate with clinical profiles in a large-scale haematological patients cohort.","authors":"Shuai Ma, Yuyao Yin, Yifan Guo, Chaoqun Yao, Siqi Xu, Qingqing Luo, Guankun Yin, Shuyi Wang, Qi Wang, Hongbin Chen, Ruobing Wang, Longyang Jin, Guanxiang Liang, Hui Wang","doi":"10.1186/s40168-024-01855-4","DOIUrl":"10.1186/s40168-024-01855-4","url":null,"abstract":"<p><strong>Background: </strong>Haematological patients exhibit immune system abnormalities that make them susceptible to viral infections. Understanding the relationship between the virome in the blood plasma of haematological patients and their clinical characteristic is crucial for disease management. We aimed to explore the presence of viral pathogens and identify close associations between viral infections and various clinical features.</p><p><strong>Results: </strong>A total of 21 DNA viruses and 6 RNA viruses from 12 virus families were identified from 1383 patients. Patients with haematological diseases exhibited significantly higher diversity, prevalence, and co-detection rates of viral pathogens. During fever episodes, pathogen detection was notably higher, with Epstein-Barr virus (EBV) and Mucorales infections being the most probable culprits for fever symptoms in non-haematological patients. The detection rate of torque teno virus (TTV) significantly increases in haematological patients after transplantation and during primary lung infections. Additionally, TTV-positive patients demonstrate significantly higher absolute neutrophil counts, while C-reactive protein and procalcitonin levels are notably lower. Furthermore, TTV, cytomegalovirus, and parvovirus B19 (B19V) were found to be more prevalent in non-neutropenic patients, while non-viral pathogenic infections, such as Gram-negative bacteria and Mucorales, were more common in neutropenic patients. Pegivirus C (HPgV-C) infection often occurred post-transplantation, regardless of neutropenia. Additionally, some viruses such as TTV, B19V, EBV, and HPgV-C showed preferences for age and seasonal infections.</p><p><strong>Conclusions: </strong>Analysis of the plasma virome revealed the susceptibility of haematological patients to plasma viral infections at specific disease stages, along with the occurrence of mixed infections with non-viral pathogens. Close associations were observed between the plasma virome and various clinical characteristics, as well as clinical detection parameters. Understanding plasma virome aids in auxiliary clinical diagnosis and treatment, enabling early prevention to reduce infection rates in patients and improve their quality of life. Video Abstract.</p>","PeriodicalId":18447,"journal":{"name":"Microbiome","volume":null,"pages":null},"PeriodicalIF":13.8,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11265361/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141752062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Unraveling the habitat preferences, ecological drivers, potential hosts, and auxiliary metabolism of soil giant viruses across China 揭示中国各地土壤巨型病毒的生境偏好、生态驱动因素、潜在宿主和辅助代谢作用
IF 15.5 1区 生物学
Microbiome Pub Date : 2024-07-22 DOI: 10.1186/s40168-024-01851-8
Jie-Liang Liang, Shi-wei Feng, Pu Jia, Jing-li Lu, Xinzhu Yi, Shao-ming Gao, Zhuo-hui Wu, Bin Liao, Wen-sheng Shu, Jin-tian Li
{"title":"Unraveling the habitat preferences, ecological drivers, potential hosts, and auxiliary metabolism of soil giant viruses across China","authors":"Jie-Liang Liang, Shi-wei Feng, Pu Jia, Jing-li Lu, Xinzhu Yi, Shao-ming Gao, Zhuo-hui Wu, Bin Liao, Wen-sheng Shu, Jin-tian Li","doi":"10.1186/s40168-024-01851-8","DOIUrl":"https://doi.org/10.1186/s40168-024-01851-8","url":null,"abstract":"Soil giant viruses are increasingly believed to have profound effects on ecological functioning by infecting diverse eukaryotes. However, their biogeography and ecology remain poorly understood. In this study, we analyzed 333 soil metagenomes from 5 habitat types (farmland, forest, grassland, Gobi desert, and mine wasteland) across China and identified 533 distinct giant virus phylotypes affiliated with nine families, thereby greatly expanding the diversity of soil giant viruses. Among the nine families, Pithoviridae were the most diverse. The majority of phylotypes exhibited a heterogeneous distribution among habitat types, with a remarkably high proportion of unique phylotypes in mine wasteland. The abundances of phylotypes were negatively correlated with their environmental ranges. A total of 76 phylotypes recovered in this study were detectable in a published global topsoil metagenome dataset. Among climatic, geographical, edaphic, and biotic characteristics, soil eukaryotes were identified as the most important driver of beta-diversity of giant viral communities across habitat types. Moreover, co-occurrence network analysis revealed some pairings between giant viral phylotypes and eukaryotes (protozoa, fungi, and algae). Analysis of 44 medium- to high-quality giant virus genomes recovered from our metagenomes uncovered not only their highly shared functions but also their novel auxiliary metabolic genes related to carbon, sulfur, and phosphorus cycling. These findings extend our knowledge of diversity, habitat preferences, ecological drivers, potential hosts, and auxiliary metabolism of soil giant viruses. ","PeriodicalId":18447,"journal":{"name":"Microbiome","volume":null,"pages":null},"PeriodicalIF":15.5,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141740456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Distributions, interactions, and dynamics of prokaryotes and phages in a hybrid biological wastewater treatment system 混合生物废水处理系统中原核生物和噬菌体的分布、相互作用和动态变化
IF 15.5 1区 生物学
Microbiome Pub Date : 2024-07-22 DOI: 10.1186/s40168-024-01853-6
Dou Wang, Lei Liu, Xiaoqing Xu, Chunxiao Wang, Yulin Wang, Yu Deng, Tong Zhang
{"title":"Distributions, interactions, and dynamics of prokaryotes and phages in a hybrid biological wastewater treatment system","authors":"Dou Wang, Lei Liu, Xiaoqing Xu, Chunxiao Wang, Yulin Wang, Yu Deng, Tong Zhang","doi":"10.1186/s40168-024-01853-6","DOIUrl":"https://doi.org/10.1186/s40168-024-01853-6","url":null,"abstract":"Understanding the interactions and dynamics of microbiotas within biological wastewater treatment systems is essential for ensuring their stability and long-term sustainability. In this study, we developed a systematic framework employing multi-omics and Hi-C sequencing to extensively investigate prokaryotic and phage communities within a hybrid biofilm and activated sludge system. We uncovered distinct distribution patterns, metabolic capabilities, and activities of functional prokaryotes through the analysis of 454 reconstructed prokaryotic genomes. Additionally, we reconstructed a phage catalog comprising 18,645 viral operational taxonomic units (vOTUs) with high length and contiguity using hybrid assembly, and a distinct distribution of phages was depicted between activated sludge (AS) and biofilm. Importantly, 1340 host-phage pairs were established using Hi-C and conventional in silico methods, unveiling the host-determined phage prevalence. The majority of predicted hosts were found to be involved in various crucial metabolic processes, highlighting the potential vital roles of phages in influencing substance metabolism within this system. Moreover, auxiliary metabolic genes (AMGs) related to various categories (e.g., carbohydrate degradation, sulfur metabolism, transporter) were predicted. Subsequent activity analysis emphasized their potential ability to mediate host metabolism during infection. We also profiled the temporal dynamics of phages and their associated hosts using 13-month time-series metagenomic data, further demonstrating their tight interactions. Notably, we observed lineage-specific infection patterns, such as potentially host abundance- or phage/host ratio-driven phage population changes. The insights gained from this research contribute to the growing body of knowledge surrounding interactions and dynamics of host-phage and pave the way for further exploration and potential applications in the field of microbial ecology. ","PeriodicalId":18447,"journal":{"name":"Microbiome","volume":null,"pages":null},"PeriodicalIF":15.5,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141740457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
MIDASim: a fast and simple simulator for realistic microbiome data MIDASim:快速、简单的模拟器,用于模拟现实微生物组数据
IF 15.5 1区 生物学
Microbiome Pub Date : 2024-07-22 DOI: 10.1186/s40168-024-01822-z
Mengyu He, Ni Zhao, Glen A. Satten
{"title":"MIDASim: a fast and simple simulator for realistic microbiome data","authors":"Mengyu He, Ni Zhao, Glen A. Satten","doi":"10.1186/s40168-024-01822-z","DOIUrl":"https://doi.org/10.1186/s40168-024-01822-z","url":null,"abstract":"Advances in sequencing technology has led to the discovery of associations between the human microbiota and many diseases, conditions, and traits. With the increasing availability of microbiome data, many statistical methods have been developed for studying these associations. The growing number of newly developed methods highlights the need for simple, rapid, and reliable methods to simulate realistic microbiome data, which is essential for validating and evaluating the performance of these methods. However, generating realistic microbiome data is challenging due to the complex nature of microbiome data, which feature correlation between taxa, sparsity, overdispersion, and compositionality. Current methods for simulating microbiome data are deficient in their ability to capture these important features of microbiome data, or can require exorbitant computational time. We develop MIDASim (MIcrobiome DAta Simulator), a fast and simple approach for simulating realistic microbiome data that reproduces the distributional and correlation structure of a template microbiome dataset. MIDASim is a two-step approach. The first step generates correlated binary indicators that represent the presence-absence status of all taxa, and the second step generates relative abundances and counts for the taxa that are considered to be present in step 1, utilizing a Gaussian copula to account for the taxon-taxon correlations. In the second step, MIDASim can operate in both a nonparametric and parametric mode. In the nonparametric mode, the Gaussian copula uses the empirical distribution of relative abundances for the marginal distributions. In the parametric mode, a generalized gamma distribution is used in place of the empirical distribution. We demonstrate improved performance of MIDASim relative to other existing methods using gut and vaginal data. MIDASim showed superior performance by PERMANOVA and in terms of alpha diversity and beta dispersion in either parametric or nonparametric mode. We also show how MIDASim in parametric mode can be used to assess the performance of methods for finding differentially abundant taxa in a compositional model. MIDASim is easy to implement, flexible and suitable for most microbiome data simulation situations. MIDASim has three major advantages. First, MIDASim performs better in reproducing the distributional features of real data compared to other methods, at both the presence-absence level and the relative-abundance level. MIDASim-simulated data are more similar to the template data than competing methods, as quantified using a variety of measures. Second, MIDASim makes few distributional assumptions for the relative abundances, and thus can easily accommodate complex distributional features in real data. Third, MIDASim is computationally efficient and can be used to simulate large microbiome datasets. ","PeriodicalId":18447,"journal":{"name":"Microbiome","volume":null,"pages":null},"PeriodicalIF":15.5,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141740458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Persistent enrichment of multidrug-resistant Klebsiella in oral and nasal communities during long-term starvation. 在长期饥饿期间,耐多药克雷伯氏菌在口腔和鼻腔群落中持续富集。
IF 13.8 1区 生物学
Microbiome Pub Date : 2024-07-20 DOI: 10.1186/s40168-024-01854-5
Jett Liu, Nell Spencer, Daniel R Utter, Alex S Grossman, Lei Lei, Nídia Castro Dos Santos, Wenyuan Shi, Jonathon L Baker, Hatice Hasturk, Xuesong He, Batbileg Bor
{"title":"Persistent enrichment of multidrug-resistant Klebsiella in oral and nasal communities during long-term starvation.","authors":"Jett Liu, Nell Spencer, Daniel R Utter, Alex S Grossman, Lei Lei, Nídia Castro Dos Santos, Wenyuan Shi, Jonathon L Baker, Hatice Hasturk, Xuesong He, Batbileg Bor","doi":"10.1186/s40168-024-01854-5","DOIUrl":"10.1186/s40168-024-01854-5","url":null,"abstract":"<p><strong>Background: </strong>The human oral and nasal cavities can act as reservoirs for opportunistic pathogens capable of causing acute infection. These microbes asymptomatically colonize the human oral and nasal cavities which facilitates transmission within human populations via the environment, and they routinely possess clinically significant antibiotic resistance genes. Among these opportunistic pathogens, the Klebsiella genus stands out as a notable example, with its members frequently linked to nosocomial infections and multidrug resistance. As with many colonizing opportunistic pathogens, the essential transmission factors influencing the spread of Klebsiella species among both healthy and diseased individuals remain unclear.</p><p><strong>Results: </strong>Here, we explored a possible explanation by investigating the ability of oral and nasal Klebsiella species to outcompete their native microbial community members under in vitro starvation conditions, which could be analogous to external hospital environments or the microenvironment of mechanical ventilators. When K. pneumoniae and K. aerogenes were present within a healthy human oral or nasal sample, the bacterial community composition shifted dramatically under starvation conditions and typically became enriched in Klebsiella species. Furthermore, introducing K. pneumoniae exogenously into a native microbial community lacking K. pneumoniae, even at low inoculum, led to repeated enrichment under starvation. Precise monitoring of K. pneumoniae within these communities undergoing starvation indicated rapid initial growth and prolonged viability compared to other members of the microbiome. K. pneumoniae strains isolated from healthy individuals' oral and nasal cavities also exhibited resistance to multiple classes of antibiotics and were genetically similar to clinical and gut isolates. In addition, we found that in the absence of Klebsiella species, other understudied opportunistic pathogens, such as Peptostreptococcus, increased in relative abundance under starvation conditions.</p><p><strong>Conclusions: </strong>Our findings establish an environmental and microbiome community circumstance that allows for the enrichment of Klebsiella species and other opportunistic pathogens. Klebsiella's enrichment may hinge on its ability to quickly outgrow other members of the microbiome. The ability to outcompete other commensal bacteria and to persist under harsh environmental conditions could be an important factor that contributes to enhanced transmission in both commensal and pathogenic contexts. Video Abstract.</p>","PeriodicalId":18447,"journal":{"name":"Microbiome","volume":null,"pages":null},"PeriodicalIF":13.8,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11264962/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141727398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Time-series metagenomics reveals changing protistan ecology of a temperate dimictic lake. 时间序列元基因组学揭示了温带二叠纪湖泊不断变化的原生动物生态。
IF 13.8 1区 生物学
Microbiome Pub Date : 2024-07-20 DOI: 10.1186/s40168-024-01831-y
Arianna I Krinos, Robert M Bowers, Robin R Rohwer, Katherine D McMahon, Tanja Woyke, Frederik Schulz
{"title":"Time-series metagenomics reveals changing protistan ecology of a temperate dimictic lake.","authors":"Arianna I Krinos, Robert M Bowers, Robin R Rohwer, Katherine D McMahon, Tanja Woyke, Frederik Schulz","doi":"10.1186/s40168-024-01831-y","DOIUrl":"10.1186/s40168-024-01831-y","url":null,"abstract":"<p><strong>Background: </strong>Protists, single-celled eukaryotic organisms, are critical to food web ecology, contributing to primary productivity and connecting small bacteria and archaea to higher trophic levels. Lake Mendota is a large, eutrophic natural lake that is a Long-Term Ecological Research site and among the world's best-studied freshwater systems. Metagenomic samples have been collected and shotgun sequenced from Lake Mendota for the last 20 years. Here, we analyze this comprehensive time series to infer changes to the structure and function of the protistan community and to hypothesize about their interactions with bacteria.</p><p><strong>Results: </strong>Based on small subunit rRNA genes extracted from the metagenomes and metagenome-assembled genomes of microeukaryotes, we identify shifts in the eukaryotic phytoplankton community over time, which we predict to be a consequence of reduced zooplankton grazing pressures after the invasion of a invasive predator (the spiny water flea) to the lake. The metagenomic data also reveal the presence of the spiny water flea and the zebra mussel, a second invasive species to Lake Mendota, prior to their visual identification during routine monitoring. Furthermore, we use species co-occurrence and co-abundance analysis to connect the protistan community with bacterial taxa. Correlation analysis suggests that protists and bacteria may interact or respond similarly to environmental conditions. Cryptophytes declined in the second decade of the timeseries, while many alveolate groups (e.g., ciliates and dinoflagellates) and diatoms increased in abundance, changes that have implications for food web efficiency in Lake Mendota.</p><p><strong>Conclusions: </strong>We demonstrate that metagenomic sequence-based community analysis can complement existing efforts to monitor protists in Lake Mendota based on microscopy-based count surveys. We observed patterns of seasonal abundance in microeukaryotes in Lake Mendota that corroborated expectations from other systems, including high abundance of cryptophytes in winter and diatoms in fall and spring, but with much higher resolution than previous surveys. Our study identified long-term changes in the abundance of eukaryotic microbes and provided context for the known establishment of an invasive species that catalyzes a trophic cascade involving protists. Our findings are important for decoding potential long-term consequences of human interventions, including invasive species introduction. Video Abstract.</p>","PeriodicalId":18447,"journal":{"name":"Microbiome","volume":null,"pages":null},"PeriodicalIF":13.8,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11265017/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141727400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Rumen and hindgut microbiome regulate average daily gain of preweaning Holstein heifer calves in different ways. 瘤胃和后肠微生物组以不同方式调节断奶前荷斯坦小母牛的平均日增重。
IF 13.8 1区 生物学
Microbiome Pub Date : 2024-07-19 DOI: 10.1186/s40168-024-01844-7
Sheng-Yang Xu, Xiao-Ran Feng, Wei Zhao, Yan-Liang Bi, Qi-Yu Diao, Yan Tu
{"title":"Rumen and hindgut microbiome regulate average daily gain of preweaning Holstein heifer calves in different ways.","authors":"Sheng-Yang Xu, Xiao-Ran Feng, Wei Zhao, Yan-Liang Bi, Qi-Yu Diao, Yan Tu","doi":"10.1186/s40168-024-01844-7","DOIUrl":"10.1186/s40168-024-01844-7","url":null,"abstract":"<p><strong>Background: </strong>The average daily gain (ADG) of preweaning calves significantly influences their adult productivity and reproductive performance. Gastrointestinal microbes are known to exert an impact on host phenotypes, including ADG. The aim of this study was to investigate the mechanisms by which gastrointestinal microbiome regulate ADG in preweaning calves and to further validate them by isolating ADG-associated rumen microbes in vitro.</p><p><strong>Results: </strong>Sixteen Holstein heifer calves were selected from a cohort with 106 calves and divided into higher ADG (HADG; n = 8) and lower ADG (LADG; n = 8) groups. On the day of weaning, samples of rumen contents, hindgut contents, and plasma were collected for rumen metagenomics, rumen metabolomics, hindgut metagenomics, hindgut metabolomics, and plasma metabolomics analyses. Subsequently, rumen contents of preweaning Holstein heifer calves from the same dairy farm were collected to isolate ADG-associated rumen microbes. The results showed that the rumen microbes, including Pyramidobacter sp. C12-8, Pyramidobacter sp. CG50-2, Pyramidobacter porci, unclassified_g_Pyramidobacter, Pyramidobacter piscolens, and Acidaminococcus fermentans, were enriched in the rumen of HADG calves (LDA > 2, P < 0.05). Enrichment of these microbes in HADG calves' rumen promoted carbohydrate degradation and volatile fatty acid production, increasing proportion of butyrate in the rumen and ultimately contributing to higher preweaning ADG in calves (P < 0.05). The presence of active carbohydrate degradation in the rumen was further suggested by the negative correlation of the rumen microbes P. piscolens, P. sp. C12-8 and unclassified_g_Pyramidobacter with the rumen metabolites D-fructose (R <  - 0.50, P < 0.05). Widespread positive correlations were observed between rumen microbes (such as P. piscolens, P. porci, and A. fermentans) and beneficial plasma metabolites (such as 1-pyrroline-5-carboxylic acid and 4-fluoro-L-phenylalanine), which were subsequently positively associated with the growth rate of HADG calves (R > 0.50, P < 0.05). We succeeded in isolating a strain of A. fermentans from the rumen contents of preweaning calves and named it Acidaminococcus fermentans P41. The in vitro cultivation revealed its capability to produce butyrate. In vitro fermentation experiments demonstrated that the addition of A. fermentans P41 significantly increased the proportion of butyrate in the rumen fluid (P < 0.05). These results further validated our findings. The relative abundance of Bifidobacterium pseudolongum in the hindgut of HADG calves was negatively correlated with hindgut 4-hydroxyglucobrassicin levels, which were positively correlated with plasma 4-hydroxyglucobrassicin levels, and plasma 4-hydroxyglucobrassicin levels were positively correlated with ADG (P < 0.05).</p><p><strong>Conclusions: </strong>This study's findings unveil that rumen and hindgut microbes play distinctive roles in regulat","PeriodicalId":18447,"journal":{"name":"Microbiome","volume":null,"pages":null},"PeriodicalIF":13.8,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11264748/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141727399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
House dust metagenome and pulmonary function in a US farming population 美国农业人口中的屋尘元基因组与肺功能
IF 13.8 1区 生物学
Microbiome Pub Date : 2024-07-18 DOI: 10.1186/s40168-024-01823-y
Mikyeong Lee, Abhishek Kaul, James M. Ward, Qiyun Zhu, Marie Richards, Ziyue Wang, Antonio González, Christine G. Parks, L. B. Beane Freeman, D. Umbach, Alison A. Motsinger-Reif, Rob Knight, Stephanie J. London
{"title":"House dust metagenome and pulmonary function in a US farming population","authors":"Mikyeong Lee, Abhishek Kaul, James M. Ward, Qiyun Zhu, Marie Richards, Ziyue Wang, Antonio González, Christine G. Parks, L. B. Beane Freeman, D. Umbach, Alison A. Motsinger-Reif, Rob Knight, Stephanie J. London","doi":"10.1186/s40168-024-01823-y","DOIUrl":"https://doi.org/10.1186/s40168-024-01823-y","url":null,"abstract":"","PeriodicalId":18447,"journal":{"name":"Microbiome","volume":null,"pages":null},"PeriodicalIF":13.8,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141639941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Gut virome-wide association analysis identifies cross-population viral signatures for inflammatory bowel disease 肠道病毒组关联分析确定了炎症性肠病的跨人群病毒特征
IF 13.8 1区 生物学
Microbiome Pub Date : 2024-07-18 DOI: 10.1186/s40168-024-01832-x
Xiangge Tian, Sheng-hui Li, Chao Wang, Yanyan Zhang, Xiaoying Feng, Qiulong Yan, Ruochun Guo, Fan Wu, Chunxue Wu, Yan Wang, Xiaokui Huo, Xiaochi Ma
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