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Mannheimia
''Mannheimia'' is a genus of Gram-negative bacteria in the family ''Pasteurellaceae''. Members of this genus are typically facultative anaerobic organism, facultatively anaerobic, non-spore-forming, and non-motile bacteria, non-motile coccobacillus, coccobacilli. Species of ''Mannheimia'' are primarily associated with mucosal surfaces of domestic and wild animals, especially ruminants. The most well-known species, ''Mannheimia haemolytica'', is an important pathogen in veterinary medicine and is a leading cause of bovine respiratory disease complex (BRDC). History The genus ''Mannheimia'' was proposed in 1999 by Danish microbiologist Ole Angen and colleagues. It was created to resolve taxonomic confusion within the former ''Pasteurella haemolytica'' complex based on results from DNA–DNA hybridization and 16S ribosomal RNA, 16S rRNA gene sequencing. The authors transferred several species to this new genus, including the newly defined ''M. ruminalis'', ''M. varigena'', and ''M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mannheimia Caviae
''Mannheimia'' is a genus of Gram-negative bacteria in the family ''Pasteurellaceae''. Members of this genus are typically facultatively anaerobic, non-spore-forming, and non-motile coccobacilli. Species of ''Mannheimia'' are primarily associated with mucosal surfaces of domestic and wild animals, especially ruminants. The most well-known species, ''Mannheimia haemolytica'', is an important pathogen in veterinary medicine and is a leading cause of bovine respiratory disease complex (BRDC). History The genus ''Mannheimia'' was proposed in 1999 by Danish microbiologist Ole Angen and colleagues. It was created to resolve taxonomic confusion within the former '' Pasteurella haemolytica'' complex based on results from DNA–DNA hybridization and 16S rRNA 16S ribosomal RNA (or 16Svedberg, S rRNA) is the RNA component of the 30S subunit of a prokaryotic ribosome (SSU rRNA). It binds to the Shine-Dalgarno sequence and provides most of the SSU structure. The genes coding for it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mannheimia Haemolytica
''Mannheimia haemolytica'' is a species of Gram-negative bacteria belonging to the family Pasteurellaceae. It is a facultatively anaerobic, non-spore-forming, and non-motile coccobacillus. ''M. haemolytica'' is a primary bacterial pathogen implicated in the bovine respiratory disease complex (BRDC), also commonly known as "shipping fever," particularly affecting cattle, sheep, and goats. History ''Mannheimia haemolytica'' was originally described as ''Pasteurella haemolytica'' by Newsom and Cross in 1932, based on bipolar organisms isolated from cases of pneumonia in sheep and cattle. For decades, it was classified within the genus ''Pasteurella''. However, advances in molecular taxonomy led to a reassessment of the '' asteurellahaemolytica'' complex. In 1999, Angen and colleagues conducted a comprehensive study using DNA–DNA hybridization and 16S rRNA gene sequencing, which demonstrated sufficient genetic divergence to warrant creation of a new genus, ''Mannheimia''. Pathogen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mannheimia Varigena
''Mannheimia varigena'' is a bacterial species, predominantly encountered in ruminants and historically classified within the former bacterial Pasteurella haemolytica complex, a group of bacteria involved in bovine respiratory disease (BRD) . It is pathogenic In biology, a pathogen (, "suffering", "passion" and , "producer of"), in the oldest and broadest sense, is any organism or agent that can produce disease. A pathogen may also be referred to as an infectious agent, or simply a germ. The term .... References Further reading * *Tefera, G., and J. Smola. "Pasteurella haemolytica complex of Pasteurella sensu stricto as new genus Mannheimia: changes in taxonomy."VETERINARNI MEDICINA-PRAHA- 46.4 (2001): 119–124. * * External links *LPSN [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mannheimia Glucosida
Mannheimia glucosida is a species of Gram-negative bacteria in the family Pasteurellaceae. It was first described in 1999 following a taxonomic revision of the ''Pasteurella haemolytica'' complex. Etymology The species name ''glucosida'' is derived from the Greek word ''glykys'' meaning "sweet" and the Latin suffix ''-ida'', indicating a connection to glucosides. The name reflects the bacterium’s ability to ferment glucoside sugars. Morphology and physiology ''M. glucosida'' is a non-motile, Gram-negative coccobacillus. It is facultatively anaerobic and forms small, grayish, smooth colonies on blood agar, often exhibiting β-hemolysis. The bacterium grows optimally at 37°C and can ferment glucose, lactose, maltose, and sucrose without gas production. It is oxidase-positive and catalase-positive. Isolation and habitat The type strain was isolated from the lung of a sheep. Other strains have been recovered from the upper respiratory tracts of healthy ruminants, especia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mannheimia Indoligenes
''Mannheimia indoligenes'' is a species of Gram-negative, facultatively anaerobic bacteria in the family Pasteurellaceae. It was first described in 2024 based on a collection of 25 strains belonging to clade V of the genus ''Mannheimia'', primarily isolated from cattle. The type strain, M14.4T (= DSM 116804T = CCUG 77347T), was originally isolated from the tongue of a healthy cow in Scotland between 1959 and 1961. However, other strains included in the species were isolated from a variety of tissues and from cattle with clinical disease. This suggests that ''M. indoligenes'' may form part of both the commensal and pathogenic microbiota in cattle. Morphology and physiology ''Mannheimia indoligenes'' cells are Gram-negative, non-motile rods. They are facultatively anaerobic and non-spore-forming. The bacterium produces indole and displays a distinct fatty acid and polar lipid profile. It uses coenzyme Q-7 as its sole respiratory quinone. Pathogenicity Although the type strain ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mannheimia Bovis
''Mannheimia bovis'' is a species of Gram-negative, facultatively anaerobic bacteria within the family Pasteurellaceae. It was first described in 2021 following its isolation from the lung of a cow that died from hemorrhagic pneumonia in Yunnan Province, China.Li, X. et al. (2021)''Mannheimia bovis'' sp. nov., isolated from a cow with pneumonia ''Current Microbiology'', 78, 3457–3464. The type strain is ZY190616T (= CCTCC AB 2020168T = KCTC 25018T). Morphology and physiology ''Mannheimia bovis'' cells are Gram-negative, non-motile, pleomorphic rods measuring approximately 0.2–0.3 × 0.2–2.5 μm. They are facultatively anaerobic and non-spore-forming. Biochemically, they produce specific fatty acids and polar lipids and utilize coenzyme Q-7 as their sole respiratory quinone. Genomic insights The complete genome of ''M. bovis'' strain ZY190616T has been sequenced, consisting of a circular chromosome approximately 2.15 Mbp in size, with 2,029 protein-coding genes and 85 RN ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mannheimia Pernigra
''Mannheimia pernigra'' is a species of Gram-negative bacterium in the family Pasteurellaceae The Pasteurellaceae comprise a large family of Gram-negative bacteria. Most members live as commensals on mucosal surfaces of birds and mammals, especially in the upper respiratory tract. Pasteurellaceae are typically rod-shaped, and are a notabl .... It was first described in 2021 following the isolation of multiple strains from the upper respiratory tracts of veal calves in Switzerland. Taxonomy ''M. pernigra'' was previously referred to as "Taxon 39" of Bisgaard. Phylogenetic analyses based on 16S rRNA, ''recN'', and ''rpoB'' gene sequences revealed that these isolates form a distinct cluster within the genus ''Mannheimia''. Morphology and physiology ''M. pernigra'' is a non-motile, Gram-negative coccobacillus. It grows aerobically on blood agar, forming small, grayish, non-hemolytic colonies. The major fatty acids are C14:0, C16:0, C16:1 ω7c, and C18:1 ω7c. The predominant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pasteurellaceae
The Pasteurellaceae comprise a large family of Gram-negative bacteria. Most members live as commensals on mucosal surfaces of birds and mammals, especially in the upper respiratory tract. Pasteurellaceae are typically rod-shaped, and are a notable group of facultative anaerobes. Their biochemical characteristics can be distinguished from the related Enterobacteriaceae by the presence of oxidase, and from most other similar bacteria by the absence of flagella. Bacteria in the family Pasteurellaceae have been classified into a number of genera based on metabolic properties, but these classifications are not generally accurate reflections of the evolutionary relationships between different species. ''Haemophilus influenzae'' was the first organism to have its genome sequenced and has been studied intensively by genetic and molecular methodologies. The genus '' Haemophilus'' is a notorious human pathogen associated with bacteremia, pneumonia, meningitis and chancroid. Other pathogen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |