by Carina Brehony
Microbes inhabit almost every ecological niche known and are the most plentiful cellular life form on the planet. The human body even contains more microbial cells than human cells. In spite of all that is known there are large gaps in our knowledge of microbial diversity partly due to the fact that sampling is skewed towards culturable organisms. Recent developments such as metagenomics, which samples environmental microbial community gene content, and single-cell genome sequencing (SCGS) are accelerating the identification of new species and even new phyla.