''Mannheimia bovis'' is a species of
Gram-negative
Gram-negative bacteria are bacteria that, unlike gram-positive bacteria, do not retain the crystal violet stain used in the Gram staining method of bacterial differentiation. Their defining characteristic is that their cell envelope consists ...
,
facultatively anaerobic
A facultative anaerobic organism is an organism that makes ATP by aerobic respiration if oxygen is present, but is capable of switching to fermentation if oxygen is absent.
Some examples of facultatively anaerobic bacteria are ''Staphylococcus' ...
bacteria within 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 its isolation from the
lung
The lungs are the primary Organ (biology), organs of the respiratory system in many animals, including humans. In mammals and most other tetrapods, two lungs are located near the Vertebral column, backbone on either side of the heart. Their ...
of a
cow
Cattle (''Bos taurus'') are large, domesticated, bovid ungulates widely kept as livestock. They are prominent modern members of the subfamily Bovinae and the most widespread species of the genus '' Bos''. Mature female cattle are called co ...
that died from
hemorrhagic
Bleeding, hemorrhage, haemorrhage or blood loss, is blood escaping from the circulatory system from damaged blood vessels. Bleeding can occur internally, or externally either through a natural opening such as the mouth, nose, ear, urethra, va ...
pneumonia
Pneumonia is an Inflammation, inflammatory condition of the lung primarily affecting the small air sacs known as Pulmonary alveolus, alveoli. Symptoms typically include some combination of Cough#Classification, productive or dry cough, ches ...
in
Yunnan Province
Yunnan; is an inland Provinces of China, province in Southwestern China. The province spans approximately and has a population of 47.2 million (as of 2020). The capital of the province is Kunming. The province borders the Chinese provinces ...
, 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 ZY190616
T (= CCTCC AB 2020168
T = KCTC 25018
T).
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
In biology, a spore is a unit of sexual reproduction, sexual (in fungi) or asexual reproduction that may be adapted for biological dispersal, dispersal and for survival, often for extended periods of time, in unfavourable conditions. Spores fo ...
-forming. Biochemically, they produce specific
fatty acids
In chemistry, in particular in biochemistry, a fatty acid is a carboxylic acid with an aliphatic chain, which is either saturated or unsaturated. Most naturally occurring fatty acids have an unbranched chain of an even number of carbon atoms, ...
and polar lipids and utilize coenzyme Q-7 as their sole respiratory quinone.
Genomic insights
The complete
genome
A genome is all the genetic information of an organism. It consists of nucleotide sequences of DNA (or RNA in RNA viruses). The nuclear genome includes protein-coding genes and non-coding genes, other functional regions of the genome such as ...
of ''M. bovis'' strain ZY190616
T has been sequenced, consisting of a circular chromosome approximately 2.15 Mbp in size, with 2,029 protein-coding genes and 85 RNA genes. Genomic analysis has revealed genes involved in carbohydrate metabolism and potential virulence factors.
KEGG Genome entry for ''Mannheimia bovis''
/ref>
See also
* Bovine respiratory disease
Bovine respiratory disease (BRD) is the most common and economically devastating infectious disease affecting beef cattle in the world. It is a complex, bacterial or viral infection that causes pneumonia in calves which can be fatal. It also aff ...
References
External links
LPSN entry for ''Mannheimia bovis''
NCBI Taxonomy Browser: ''Mannheimia bovis''
KEGG GENOME: ''Mannheimia bovis''
{{Taxonbar, from=Q135108029
Gram-negative bacteria
Pasteurellales