The journal aims to publish high-quality research from scientists with a common interest in microbiome/microbiota research in all its multidisciplinary aspects. The main areas of interest include but are not limited to the following: the structure, activities and communal behavior of microbial communities microbial community genetics and evolutionary processes microbial symbioses, microbial interactions microbial metabolic and structural diversity microbial physiology, growth and survival microbes and surfaces, adhesion and biofouling modelling, theory development and new analysis pipelines viromes/phageome antimicrobials and competition in microbiomes fungal communities (mycobiomes) exploration of microbial dark matter culturomics approaches applied to microbiomes metabolomics and proteomic approaches applied to microbiomes metatranscriptomics applied to microbiomes new technological developments in the study of composition and activities of microbial communities, as-yet uncultured microorganisms gnotobiotic studies develoment of minimal microbial consortia and synthetic communities for functional microbe-host studies probiotics, prebiotics, synbiotics and postbiotics microbial-derived metabolites originating from food/feed and playing a role on host physiology effect of microbiota modulation in gastrointestinal disorders effect of microbiota modulation in metabolic disorders novel treatments and clinical trials impact of dietary components on the microbiota, and inter-individual variation in responses host-microbiome interaction in immune response