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In virology, temperate refers to the ability of some bacteriophages (notably coliphage λ) to display a lysogenic life cycle. Many (but not all) temperate phages can integrate their genomes into their host bacterium's chromosome, together becoming a lysogen as the phage genome becomes a prophage .
Another way of envisioning phage "organismal" ecology is that it is the study of phage adaptations that contribute to phage survival and transmission to new hosts or environments. Phage "organismal" ecology is the most closely aligned of phage ecology disciplines with the classical molecular and molecular genetic analyses of bacteriophage.
Structural model at atomic resolution of bacteriophage T4 [1] The structure of a typical myovirus bacteriophage Anatomy and infection cycle of bacteriophage T4.. A bacteriophage (/ b æ k ˈ t ɪər i oʊ f eɪ dʒ /), also known informally as a phage (/ ˈ f eɪ dʒ /), is a virus that infects and replicates within bacteria and archaea.
A prophage is a bacteriophage (often shortened to "phage") genome that is integrated into the circular bacterial chromosome or exists as an extrachromosomal plasmid within the bacterial cell. [1] Integration of prophages into the bacterial host is the characteristic step of the lysogenic cycle of temperate phages.
Filamentous phage Cf1t from Xanthomonas campestris (of NCBI's proposed species Xanthomonas phage Cf1t, incertae sedis within Inoviridae, likely misspelled as Cflt), [24] was shown in 1987 to integrate into the host bacterial genome, and further such temperate filamentous phages have since been reported, many of which have been implicated in ...
Bacteriophage P2 is a temperate phage, which means that it can propagate lytically (i.e. directing the host cell to produce phage progenies and finally lysing the host when the phage progenies exit), as well as establish lysogeny (i.e. injecting and fusing its genetic material into the genome of the host without lysing the cell) and maintain as ...
Plaques from a virus isolated from a compost heap near UCLA. The bacterium is M. smegmatis.. A viral plaque is a visible structure formed after introducing a viral sample to a cell culture grown on some nutrient medium.
Oftentimes scientists will look only at a phageome instead of a virome while conducting research. Variations due to many factors have also been explored such as diet, age, and geography. The phageome has been studied in humans in connection with a wide range of disorders of the human body, including IBD, IBS, and colorectal cancer. [6]