What is male specific Coliphage?
What is male specific Coliphage?
Male-specific coliphages are either DNA or RNA viruses that infect through fertility (F) pili of Enterobacteriaceae bacteria. The host specified in the US Environmental Protection Agency (EPA) Methods 1601 and 1602 for somatic coliphages is nalidixic acid-resistant E. coli CN-13.
What is Coliphage test?
Coliphage monitoring is one type of water quality test that OCWD has performed for many years at many different locations. Coliphages are a group of bacteriophages (or bacterial viruses) that are found in coliform bacteria, such as E. coli. Bacteriophages are found throughout the environment, wherever bacteria exist.
What are some sources of Coliphages in the environment?
Although they are abundant in domestic wastewater, raw sewage sludge, and polluted waters (Havelaar et al., 1990; Debartolomeis and Cabelli, 1991; Leclerc et al., 2000; Mandilara et al., 2006), coliphages are present at lower densities in fresh feces than in wastewater (Dhillon et al., 1976; Osawa et al., 1981; Calci …
What are some advantages of using bacteriophages as indicators for enteric viruses?
Bacteriophages are an attractive alternative to fecal indicator bacteria (FIB), particularly as surrogates of enteric virus fate and transport, due to their closer morphological and biological properties.
What is Cyanophage example?
Cyanopodovirus. Cyanopodovirus, within the Podoviridae, are present in both fresh and marine water. The type specimen of cyanopodovirus is Cyanophage LPP-1, which infects Lyngbya, Plectonema and Phormidium. Their capsids are polyhedrons that appear hexagonal in 2-D.
What are somatic Coliphages?
Somatic coliphages are the phages that replicate in E. coli after infecting it through the cell wall (Kott et al. 1974; IAWPRC 1991). They may also infect some bacterial species closely related to E. coli, such as Klebsiella spp.
Can viruses infect fungi?
Viruses of fungi, otherwise known as ‘mycoviruses’, infect many medically and commercially important fungi, but often do not cause obvious signs of disease. Mycoviruses may have evolved to minimise their burden upon fungi because their entire life cycle occurs exclusively within their host cell.
Who is father of virology?
Martinus Beijerinck is often called the Father of Virology. Beijerinck’s laboratory grew into an important center for microbiology.
What is the smallest known virus?
AAV is the smallest DNA virus with an average size of 20 nm. AAV was discovered in 1965 as a defective contaminating virus in an adenovirus stock (Atchison et al., 1965).
How are somatic and male specific coliphages classified?
Coliphages are classified as somatic or male specific. The somatic coliphages are DNA viruses that infect E. coli cell walls. Male-specific coliphages are either DNA or RNA viruses that infect through fertility (F) pili of Enterobacteriaceae bacteria.
Where are the receptors located in A coliphage?
Phages attached to the receptors located in the cell wall are the most common, normally known as somatic phages. Two groups of bacteriophages that infect E. coli, somatic and F-specific coliphages, have been used as both fecal and viral indicators in academia for many years [ 1, 2, 3, 4 ].
What are the methods used to detect coliphage?
Simple and rapid methods for coliphage detection have been reported with preliminary detection in a single working day. Qualitative detection methods are multiple-step procedures that involve coliphage replication in exponential-growth-phase cells of the host E. coli (enrichment step) followed by a spotting on seeded agar for plaque confirmation.
How are coliphages different from other types of bacteria?
Coliphages are usually differentiated as somatic (those infecting non-pilis-containing E. coli cells) and male-specific (those infecting cells with the F pilis). The latter are usually a less numerous subset of total present coliphages ( Dhillon et al., 1970; Ackermann and Nguyen, 1983 ).