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Bacteriophages are among the most common and diverse entities in the biosphere. [2] Bacteriophages are ubiquitous viruses, found wherever bacteria exist. [3] It is estimated there are more than 10 31 bacteriophages on the planet, more than every other organism on Earth, including bacteria, combined. [4]
Bacteriophages , potentially the most numerous "organisms" on Earth, are the viruses of bacteria (more generally, of prokaryotes [1]). Phage ecology is the study of the interaction of bacteriophages with their environments .
The dominant hosts for viruses in the ocean are marine microorganisms, such as bacteria. [14] Bacteriophages are harmless to plants and animals, and are essential to the regulation of marine and freshwater ecosystems [91] are important mortality agents of phytoplankton, the base of the foodchain in aquatic environments. [92]
Phage therapy is the use of bacteriophages to treat bacterial infections. Bacteriophage treatment offers a possible alternative to conventional antibiotic treatments for bacterial infection. [55] It is conceivable that, although bacteria can develop resistance to phages, the resistance might be easier to overcome than resistance to antibiotics.
Several bacteriophages contain toxin genes that become incorporated into the host bacteria genome through infection and render the bacteria toxic. [9] Many well known bacterial toxins are produced from specific strains of the bacteria species that have obtained toxigenicity through lysogenic conversion, pseudolysogeny, or horizontal gene ...
Lambda phage (coliphage λ, scientific name Lambdavirus lambda) is a bacterial virus, or bacteriophage, that infects the bacterial species Escherichia coli (E. coli). It was discovered by Esther Lederberg in 1950. [ 2 ]
Filamentous bacteriophages are a family of viruses (Inoviridae) that infect bacteria, or bacteriophages. They are named for their filamentous shape, a worm-like chain (long, thin, and flexible, reminiscent of a length of cooked spaghetti), about 6 nm in diameter and about 1000-2000 nm long.
Escherichia virus T4 is a species of bacteriophages that infect Escherichia coli bacteria. It is a double-stranded DNA virus in the subfamily Tevenvirinae of the family Straboviridae . T4 is capable of undergoing only a lytic life cycle and not the lysogenic life cycle .
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