Kitrinoviricota

Kitrinoviricota is a phylum of RNA viruses that includes a diverse group of viruses with positive-sense single-stranded RNA genomes. These viruses are known to infect a wide range of hosts, including plants, animals, and fungi. The phylum is characterized by its unique replication mechanism and structural proteins.

Taxonomy

Kitrinoviricota is part of the larger realm of Riboviria, which encompasses all RNA viruses that replicate via an RNA-dependent RNA polymerase. Within Kitrinoviricota, there are several classes, orders, and families that further categorize the diversity of viruses based on genetic and structural characteristics.

Classes

The phylum Kitrinoviricota is divided into several classes, each containing multiple orders and families. These classes are defined based on the genetic makeup and evolutionary relationships of the viruses.

Orders

Within each class, there are multiple orders that group viruses with similar replication strategies and host ranges. The orders are further divided into families, genera, and species.

Structure

Viruses in the Kitrinoviricota phylum typically have a simple structure consisting of a capsid that encases the RNA genome. The capsid is composed of protein subunits that form a protective shell around the genetic material. Some members of this phylum may also have an envelope derived from the host cell membrane.

Replication

The replication cycle of Kitrinoviricota viruses involves the synthesis of a complementary RNA strand from the positive-sense RNA genome. This process is mediated by an RNA-dependent RNA polymerase, which is a hallmark of the Riboviria realm. The newly synthesized RNA serves as a template for the production of viral proteins and the replication of the viral genome.

Host Interaction

Kitrinoviricota viruses have evolved various mechanisms to interact with their hosts. These interactions can lead to a range of outcomes, from asymptomatic infections to severe disease. The ability of these viruses to adapt to different hosts is a key factor in their evolutionary success.

Related Pages

• RNA virus
• Riboviria
• Virus classification
• Viral replication

Kitrinoviricota gallery

• 

  MBio.02329-18.F4.large