This article outlines the composition of normal human microbiota of the intestines and their composition differences along the intestinal tract from the small to the large bowel. It describes the progression of gut microbiota signatures from birth through old age and the influence of lifestyle and environmental factors on its composition. Although most studies involve the study of fecal samples, information from gut mucosal studies, where available, is described. Through metagenomic and metatranscriptomic studies using next-generation sequencing, we are now beginning to appreciate that the gut microbiota plays an essential role in ensuring the host's well-being.
|Title of host publication
|Encyclopedia of Food Microbiology
|Number of pages
|Published - 2014