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Aimee Davidson Bench E Date

Classification

Higher order taxa

Kingdom – Domain – Phylum – Class – Order – Family – Genus

Kingdom - Bacteria - Firmicutes - Negativicutes - Selenomonadales - Veillonellaceae - Veillonella ^[3]

Species

Species name and type strain (consult LPSN http://www.bacterio.net/index.html for this information)

Veillonella parvula strain 10790

Description and significance

Give a general description of the species (e.g. where/when was it first discovered, where is it commonly found, has it been cultured, functional role, type of bacterium [Gram+/-], morphology, etc.) and explain why it is important to study this microorganism. Examples of citations ^[1], ^[2]

Genome structure

Select a strain for which genome information (e.g. size, plasmids, distinct genes, etc.) is available.

V. parvula exhibits a circular 2.13 Mb (2,132,142 bp) genome, of which 88.46 % is DNA encoding, and was the first member of the Veillonella family to have its complete genome sequenced. Its 1920 genes include: 1859 protein-encoding genes, 61 RNA specific genes and 15 pseduogenes, with an overall GC content of 38.63%. The majority of these genes are predicted to have either an unknown (385 genes) or general function (177 genes). Although those genes with a predicted function are predominately involved with: translation, ribosomal structure, cell wall or membrane biogenesis, energy production and conversion, amino acid, coenzyme and inorganic transport and metabolism ^[5] .

Cell structure and metabolism

Cell wall, biofilm formation, motility, metabolic functions.

Ecology

Aerobe/anaerobe, habitat (location in the oral cavity, potential other environments) and microbe/host interactions.

Pathology

Do these microorganisms cause disease in the oral cavity or elsewhere?

V. parvula has a well established association with human oral diseases, in particular demonstrating a strong association with severe early childhood carries and intraradicular infections ^[5],^[6].

Although V. parvula is generally presented as a commensal or non-pathogenic resident in the bacterial communities of the oropharynx and the gastrointestinal, genitourinary and respiratory tracks ^[7] , it has rarely been associated with a number of serious and life-threatening infections. These infections include: osteomyeltitis, spondylodiscitis, discitis, meningitis and sinus infections ^[7], ^[8].

Application to biotechnology

Bioengineering, biotechnologically relevant enzyme/compound production, drug targets,…

Current research

Summarise some of the most recent discoveries regarding this species.

References

References examples

1. Sahm, K., MacGregor, B.J., Jørgensen, B.B., and Stahl, D.A. (1999) Sulphate reduction and vertical distribution of sulphate-reducing bacteria quantified by rRNA slotblot hybridization in a coastal marine sediment. Environ Microbiol 1: 65-74.

2. Human Oral Microbiome

3. List of prokaryotic names with standing in nomenclature

5. Sabine Gronow, Sabine Welnitz, Alla Lapidus,2 Matt Nolan,2 Natalia Ivanova,2 Tijana Glavina Del Rio,2 Alex Copeland,2 Feng Chen,2 Hope Tice,2 Sam Pitluck,2 Jan-Fang Cheng,2 Elizabeth Saunders,2,3 Thomas Brettin,2,3 Cliff Han,2,3 John C. Detter,2,3 David Bruce,2,3 Lynne Goodwin,2,3 Miriam Land,2,4 Loren Hauser,2,4 Yun-Juan Chang,2,4 Cynthia D. Jeffries,2,4 Amrita Pati,2 Konstantinos Mavromatis,2 Natalia Mikhailova,2 Amy Chen,5 Krishna Palaniappan,5 Patrick Chain,2,3 Manfred Rohde,6 Markus Göker,1 Jim Bristow,2 Jonathan A. Eisen,2,7 Victor Markowitz,5 Philip Hugenholtz,2 Nikos C. Kyrpides,2, Hans-Peter Klenk,1 and Susan Lucas2 (2010) Complete genome sequence of Veillonella parvula type strain (Te3). Stand Genomic Sci 2(1): 65-74.

6. Izumi Mashima,1,2 Citra Fragrantia Theodorea,2,3 Boonyanit Thaweboon,4 Sroisiri Thaweboon,4 and Futoshi Nakazawa2 (2016) Identification of Veillonella Species in the Tongue Biofilm by Using a Novel One-Step Polymerase Chain Reaction Method. PLoS One. 11(6):e0157516

7. Chen YC, Ko PH, Yang CJ, Chen YC, Tsai CC, Hsieh MH (2014) Epidural abscess caused by Veillonella parvula: Case report and review of the literature. J Microbiol Immunol Infect. pii:S1684-1182(14)00098-X

8. Bhatti MA, Frank MO (2000) Veillonella parvula meningitis: case report and review of Veillonella infections. Clin Infect Dis. 31(3):839-40.

This page is written by Aimee Davidson for the MICR3004 course, Semester 2, 2016