What is broad host range vector?

The broad-host-range (BHR) plasmids have been defined as those plasmids that can self-transfer themselves and can stably replicate and maintain in bacterial species from at least two subgroups within the Proteobacteria (e.g., between α- and β- Proteobacteria) (Szpirer et al., 1999; Sen et al., 2011).

Which viruses have a narrow host range?

Microcystis viruses Ma-LMM01 and MaMV-DC are Myoviridae family members with very narrow host ranges, and they are known only to infect M. aeruginosa strains NIES-298 (12) and FACHB-524 (13) among the tested strains, respectively.

What determines the host range of a plasmid?

Abstract. Host-range, a fundamental property of a bacterial plasmid, is primarily determined by the plasmid replication system.

Which virus has a broad host range?

For example, CMV (Bromoviridae) is an important plant pathogen with the widest host-range of all known plant viruses, and worldwide distribution. The virus is transmitted by no less than 60 different species of aphids, or via seeds or dodder.

What is the host range of a pathogen?

Host range, defined as the number of host species used by a pathogen, is a simple metric that is central to understanding pathogen epidemiology and pathogenicity. Host range conditions the transmission dynamics and survival of pathogens and is predicted to be a major factor in their evolution.

What is a broad host range virus?

Broad host range phages are seen as more useful as well in some applications of bacteriophages. For phage therapy, a broad host range phage that kills multiple species of bacteria would be the equivalent of a broad spectrum antibiotic.

When a virus has a broad host range?

1. Cyanophages. Host range is an important aspect of diversity that has ecological repercussions. Viruses that have broad host ranges are less likely to be dependent on a specific host for replication, and their effect on community structure may be less than viruses with very narrow host ranges.

What does SacB gene do?

The SacB-SacR gene cassette, driven by its native promoter, has been used as a negative selectable marker for many gram-negative bacteria, and works by preventing the transformed bacterial cells from growing on culture medium supplemented with sucrose (Ried and Collmer, 1987).

What is a virus host range?

A virus’ host range is the range of cell types and host species a virus is able to infect.

What is a wide host range pathogen?

Pathogens have been typically classified by host range either as specialists (which in nature can only infect, multiply efficiently, and be transmitted, in hosts from one or a few taxonomically related species) or as generalists or multihost pathogens (which infect, multiply, and are transmitted efficiently in hosts …