13 research outputs found
Author Correction: Elucidating causative gene variants in hereditary Parkinsonâs disease in the Global Parkinsonâs Genetics Program (GP2)
Correction to: npj Parkinsonâs Disease, published online 27 June 2023 In this article the Global Parkinsonâs Genetics Program (GP2) members names and affiliations were missing in the main author list of the Original article which are listed in the below
Author Correction: Elucidating causative gene variants in hereditary Parkinsonâs disease in the Global Parkinsonâs Genetics Program (GP2)
Correction to: s41531-023-00526-9 npj Parkinsonâs Disease, published online 27 June 2023 In this article the Global Parkinsonâs Genetics Program (GP2) members names and affiliations were missing in the main author list of the Original article which are listed in the below
Structural equation models to disentangle the biological relationship between microbiota and complex traits: Methane production in dairy cattle as a case of study
The advent of metagenomics in animal breeding poses the challenge of statistically modelling the relationship between the microbiome, the host genetics and relevant complex traits. A set of structural equation models (SEMs) of a recursive type within a Markov chain Monte Carlo (MCMC) framework was proposed here to jointly analyse the hostâmetagenomeâphenotype relationship. A nonârecursive bivariate model was set as benchmark to compare the recursive model. The relative abundance of rumen microbes (RA), methane concentration (CH4) and the host genetics was used as a case of study. Data were from 337 Holstein cows from 12 herds in the north and northâwest of Spain. Microbial composition from each cow was obtained from whole metagenome sequencing of ruminal content samples using a MinION device from Oxford Nanopore Technologies. Methane concentration was measured with GuardianÂź NG infrared gas monitor from Edinburgh Sensors during cow's visits to the milking automated system. A quarterly average from the methane eructation peaks for each cow was computed and used as phenotype for CH4. Heritability of CH4 was estimated at 0.12 ± 0.01 in both the recursive and bivariate models. Likewise, heritability estimates for the relative abundance of the taxa overlapped between models and ranged between 0.08 and 0.48. Genetic correlations between the microbial composition and CH4 ranged from â0.76 to 0.65 in the nonârecursive bivariate model and from â0.68 to 0.69 in the recursive model. Regardless of the statistical model used, positive genetic correlations with methane were estimated consistently for the seven genera pertaining to the Ciliophora phylum, as well as for those genera belonging to the Euryarchaeota (Methanobrevibacter sp.), Chytridiomycota (Neocallimastix sp.) and Fibrobacteres (Fibrobacter sp.) phyla. These results suggest that rumen's whole metagenome recursively regulates methane emissions in dairy cows and that both CH4 and the microbiota compositions are partially controlled by the host genotype.National plan of research, development and innovation 2013â2020, Grant/ Award Number: RTA2015â0022âCO3 (METALGEN)UCR::VicerrectorĂa de Docencia::Ciencias Agroalimentarias::Facultad de Ciencias Agroalimentarias::Escuela de ZootecniaUCR::VicerrectorĂa de InvestigaciĂłn::Unidades de InvestigaciĂłn::Ciencias Agroalimentarias::Centro de InvestigaciĂłn en NutriciĂłn Animal (CINA