Melissococcus plutonius: Difference between revisions

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==Description and Significance==
==Description and Significance==
Melissococcus plutonius is the aetiological agent of European foul brood, an important disease of honey bees which is found on all continents where Apis mellifera is kept; it also affects A. cerana. European foul brood is on the list of diseases notifiable to the World Organisation for Animal Health (OIE), and the disease and pathogen are included in the Invasive Species Compendium for that reason.Studies carried out by Bailey and Collins, published in the early 1980s, concentrated on the taxonomy and reclassification of the causal agent of European foul brood disease. The authors reported that Streptococcus pluton strains isolated from European-foul-brood-infected honeybee larvae in broadly separate parts of the world were all related serologically, and thus represented a fairly homogenous taxon (Bailey and Collins, 1982b). The results of tests indicated that the strains should constitute the nucleus of a new genus, Melissococcus. In the same volume of the Journal of Applied Bacteriology, Bailey and Collins (1982a) announced the reclassification of Streptococcus pluton in the new genus, proposing Melissococcus pluton (White) nom. rev.: comb. nov. as the one species within that genus. Trüper and Clari (1998) corrected the name to Melissococcus plutonius to meet the requirements of the International Code of Zoological Nomenclature.
 
Melissococcus plutonius is a European foul brood that is an important disease of honey bees. It is found on conctinents where Apis mellifera is kept. In 1980, Bailey and Collins had reclassification of the European foul brood disease. It state that the plutonius infect the honeybee larvae in broadly separate parts. In 1982, they introduce the new reclassified name as Melissococcus pluton. Then 1998, Truper and Clari change the name to Melissococcus plutonius to meet the International Code of Zoological Nomenclature.


==Genome==
==Genome==
The genome sequence is pictured by this link:
 
The M. plutonius DAT561 genome is a single circular chromosome of 1,847,807 bp, with an average GC content of 31.5%. The chromosome contained a total of 1,531 CDSs, 18 pseudogenes, 55 tRNA genes for all amino acids, and four rRNA operons. In addition, the chromosome harbored four incomplete prophages. The genome contained two plasmids, pMP1 and pMP19, comprising 200,057 and 19,967 bp, respectively, with average GC contents of 29.2% and 30.3%, respectively, and pMP19 was partially sequenced. pMP1 and pMP19 contained 162 and 28 CDSs, respectively, and three pseudogenes were found in the pMP1 plasmid
The M. plutonius DAT561 genome is a single circular chromosome with an average GC content of 31.5%. It also have 4 rRNA operons, 55 tRNA genes for all the amino acids, 18 pseudogenes, and the chromosome contain a total of 1,531 CDSs. They also have four incomplete prophages. The genome contain two plasmids and three pseudogenes were found in the pMP1 plasmid. The plasmids have an average GC content of 29.2% and 30.3%.


==Cell Structure, Metabolism and Life Cycle==
==Cell Structure, Metabolism and Life Cycle==
These strains belong to clonal complex (CC) 12, as determined by multilocus sequence typing analysis, and show atypical cultural and biochemical characteristics in vitro compared with strains of other CCs tested. Although EFB is considered to be a purely intestinal infection according to early studies, it is unknown whether the recently found CC12 strains cause EFB by the same pathomechanism.
 
The M. plutonius is a prokaryotic cell. The life cycle from a M. plutonius is when a parasitic mite (Varroa destructor) bites a bee. Inside the infected larva is when the bacterial concentrate into the food mass. Then the peritrophic membrane react with the bacteria, where they produce at.  It sometimes depend on the level of the infection on weather the infected larva will survive or not. If the nurse bees can get an increase of food supple then it can reduce the larval death.


==Ecology and Known Roles in Symbiosis==
==Ecology and Known Roles in Symbiosis==
Honey bees are important to agriculture and horticulture as pollinators, and European foul brood is a very serious and infectious disease (FERA, 2013). The value of pollination is estimated to exceed the value of products from beehives many-fold. Any disease that causes a significant decrease in honeybee population is likely to have an adverse effect on the beekeeping industry and agricultural production. Impact on Habitats. Bee decline will have a significantly negative affect on pollination in habitats that rely on these insects for development. The value of pollination is estimated to exceed the value of products from beehives many-fold. A decline in native bees, such as A. mellifera, due to the spread of European foul brood, will have a negative effect on bee biodiversity. The effect of European foul brood outbreaks on honeybee health will also have a significant impact on honey products and thus the livelihood of beekeepers.
Honey bees are important to agriculture but the European foul brood is very serious and infectious disease. The disease can cause problem with many things such as beekeeping industry and agricultural production. It can also effect the habitats because the impact that honeybees have on other animals. The will cause negative effect on the bee biodiversity.


==Fun Facts==
==Fun Facts==
IMPACT OUTCOMES
Some fun facts on the Melissococcus plutonius are that it have a sour odour to it. It also have a scale which is rubbery, brown to black looking. It have a spotty brood pattern in a honey bee colony. It sometimes be melted in the cells and be mushy. The remaining part be slightly ropey with threads less then 1.5cm long. You can test the remains by sticking a tooth pick into the hole to see if its ropey looking.


Damaged ecosystem services
==References==
 
Forsgren, E., Lundhagen, A.C., Imdorf, A. et al. Distribution of Melissococcus plutonius in Honeybee Colonies with and without Symptoms of European Foulbrood. Microb Ecol 50, 369–374 (2005). https://doi.org/10.1007/s00248-004-0188-2
Host damage
 
Negatively impacts animal health
 
Negatively impacts livelihoods
 
Reduced native biodiversity
 
Threat to/ loss of native species
 
Damages animal/plant products


IMPACTS MECHANISMS
Jyothis P. Joseph, Amritha V. S.. (2019) Survey and etiology of bacterial brood disease infecting Indian honey bees (Apis cerana indica F.) in Southern Kerala. Journal of Apicultural Research 0:0, pages 1-9.


Pathogenic
Kayo Okumura, Rie Arai, Masatoshi Okura, Teruo Kirikae, Daisuke Takamatsu, Makoto Osaki, Tohru Miyoshi-Akiyama. Journal of Bacteriology
Jul 2011, 193 (15) 4029-4030; DOI: 10.1128/JB.05151-11


LIKELIHOOD OF ENTRY/CONTROL
K. Mohan Rao, Sapna Katna, Bachittar Singh Rana, Rakesh Rana. (2015) Thai sacbrood and sacbrood viruses versus European foulbrood of hive bees in India – a review. Journal of Apicultural Research 54:3, pages 192-199.


Highly likely to be transported internationally accidentally
Oleg Lewkowski and Silvio Erler, Virulence of Melissococcus plutonius and secondary invaders associated with European foulbrood disease of the honey bee, MicrobiologyOpen, 8, 3, (2018).


Difficult to identify/detect in the field
==References==
[Sample reference] [https://onlinelibrary.wiley.com/doi/abs/10.1002/bies.201800256 Bosch TCG, Guillemin K, McFall-Ngai M (2019) Evolutionary "Experiments" in Symbiosis: The Study of Model Animals Provides Insights into the Mechanisms Underlying the Diversity of Host-Microbe Interactions. ''BioEssays'' 41:1800256]
https://en.wikipedia.org/wiki/Malassezia
https://sciencing.com/parts-yeast-cell-8451459.html


==Author==
==Author==

Latest revision as of 23:49, 11 March 2020

This student page has not been curated.

Classification

Melissococcus plutonius

Domain: Bacteria

Phylum: Firmicutes

Class: Bacilli

Order: Lactobaillales

Family: Enterococcaceae

Genus: Melissococcus

Species: Melissococcus plutonius


Description and Significance

Melissococcus plutonius is a European foul brood that is an important disease of honey bees. It is found on conctinents where Apis mellifera is kept. In 1980, Bailey and Collins had reclassification of the European foul brood disease. It state that the plutonius infect the honeybee larvae in broadly separate parts. In 1982, they introduce the new reclassified name as Melissococcus pluton. Then 1998, Truper and Clari change the name to Melissococcus plutonius to meet the International Code of Zoological Nomenclature.

Genome

The M. plutonius DAT561 genome is a single circular chromosome with an average GC content of 31.5%. It also have 4 rRNA operons, 55 tRNA genes for all the amino acids, 18 pseudogenes, and the chromosome contain a total of 1,531 CDSs. They also have four incomplete prophages. The genome contain two plasmids and three pseudogenes were found in the pMP1 plasmid. The plasmids have an average GC content of 29.2% and 30.3%.

Cell Structure, Metabolism and Life Cycle

The M. plutonius is a prokaryotic cell. The life cycle from a M. plutonius is when a parasitic mite (Varroa destructor) bites a bee. Inside the infected larva is when the bacterial concentrate into the food mass. Then the peritrophic membrane react with the bacteria, where they produce at. It sometimes depend on the level of the infection on weather the infected larva will survive or not. If the nurse bees can get an increase of food supple then it can reduce the larval death.

Ecology and Known Roles in Symbiosis

Honey bees are important to agriculture but the European foul brood is very serious and infectious disease. The disease can cause problem with many things such as beekeeping industry and agricultural production. It can also effect the habitats because the impact that honeybees have on other animals. The will cause negative effect on the bee biodiversity.

Fun Facts

Some fun facts on the Melissococcus plutonius are that it have a sour odour to it. It also have a scale which is rubbery, brown to black looking. It have a spotty brood pattern in a honey bee colony. It sometimes be melted in the cells and be mushy. The remaining part be slightly ropey with threads less then 1.5cm long. You can test the remains by sticking a tooth pick into the hole to see if its ropey looking.

References

Forsgren, E., Lundhagen, A.C., Imdorf, A. et al. Distribution of Melissococcus plutonius in Honeybee Colonies with and without Symptoms of European Foulbrood. Microb Ecol 50, 369–374 (2005). https://doi.org/10.1007/s00248-004-0188-2

Jyothis P. Joseph, Amritha V. S.. (2019) Survey and etiology of bacterial brood disease infecting Indian honey bees (Apis cerana indica F.) in Southern Kerala. Journal of Apicultural Research 0:0, pages 1-9.

Kayo Okumura, Rie Arai, Masatoshi Okura, Teruo Kirikae, Daisuke Takamatsu, Makoto Osaki, Tohru Miyoshi-Akiyama. Journal of Bacteriology Jul 2011, 193 (15) 4029-4030; DOI: 10.1128/JB.05151-11

K. Mohan Rao, Sapna Katna, Bachittar Singh Rana, Rakesh Rana. (2015) Thai sacbrood and sacbrood viruses versus European foulbrood of hive bees in India – a review. Journal of Apicultural Research 54:3, pages 192-199.

Oleg Lewkowski and Silvio Erler, Virulence of Melissococcus plutonius and secondary invaders associated with European foulbrood disease of the honey bee, MicrobiologyOpen, 8, 3, (2018).


Author

This page was authored by Hakias Davis as part of the 2020 UM Study USA led by Dr. Erik Hom at the University of Mississippi.