A wide array of microorganisms, including many novel, phylogenetically deeply rooted taxa,
survive and thrive in extreme environments. These unique and reduced-complexity …

The remarkable capacity of some viruses to adapt to new hosts and environments is highly
dependent on their ability to generate de novo diversity in a short period of time. Rates of …

The host range of a bacteriophage is the taxonomic diversity of hosts it can successfully
infect. Host range, one of the central traits to understand in phages, is determined by a range …

Candidate phyla radiation (CPR) bacteria and DPANN (an acronym of the names of the first
included phyla) archaea are massive radiations of organisms that are widely distributed …

Methanogenic archaea are major producers of methane, a potent greenhouse gas and
biofuel, and are widespread in diverse environments, including the animal gut. The …

In marine ecosystems, viruses exert control on the composition and metabolism of microbial
communities, influencing overall biogeochemical cycling. Deep sea sediments associated …

Bacteria have a range of distinct immune strategies that provide protection against
bacteriophage (phage) infections. While much has been learned about the mechanism of …

Viruses of archaea represent one of the most enigmatic parts of the virosphere. Most of the
characterized archaeal viruses infect extremophilic hosts and display remarkable diversity of …

Archaea—a primary domain of life besides Bacteria—have for a long time been regarded as
peculiar organisms that play marginal roles in biogeochemical cycles. However, this picture …

One of the most prominent features of archaea is the extraordinary diversity of their DNA
viruses. Many archaeal viruses differ substantially in morphology from bacterial and …