Project description:Seaweeds represent a promising source of sustainable, alternative feed for livestock. Despite their increasing popularity in agriculture, the dietary fate of seaweed polysaccharides, such as carrageenan, is not known. Here, we applied metagenome-resolved metaproteomicfunctional microbiome analyses to discover catabolic enzymes from the gastrointestinal tract (GIT) microbiomes of ruminants specific for digestion of carrageenans from red seaweeds, such as Mazzaella japonica. Against the expectations of ruminal fermentation, M. japonica significantly instead increases Bacteroides abundance within the lower GIT, and while bacterial isolates can use carrageenans as a sole carbon source. Carrageenan-active polysaccharide utilization loci (CarPULs) were identified and recombinant enzymes were characterized to provide insights into pathway specialization of divergent CarPULs. Selective enrichment and metagenomic mining revealed carrageenan catabolism is widespread among geographically and taxonomically distinct ruminants, suggesting it is a widely distributed latent trait. These pathways are distinct from marine bacteria, highlighting a complex and ancient evolutionary history in the GIT microbiota of animals.
Project description:To investigate the evolutionary changes of regulatory elements in ruminants, we then performed regulatory elements profiling analysis using ChIP-seq datasets (H3K27ac and H3K4me3) of liver from three ruminants.
Project description:To investigate the evolutionary changes of gene expression in ruminants, we performed gene expression profiling analysis using RNA-seq data of liver from three ruminants.
Project description:To describe the gene expression profile of brain and muscle across ruminants, we performed gene expression analysis of brain and muscle using RNA-seq data for three ruminants.
2024-02-07 | GSE213317 | GEO
Project description:rumen metagenome of three feeding types of ruminants