Taxonomy: Bacteria; Firmicutes; Bacilli; Bacillales; Listeriaceae;

Listeria

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Listeria monocytogenes

I. Organism Information

A. Taxonomy Information

1. Species

a. Listeria monocytogenes

i. Taxonomy ID: 1639

ii. Description:

Listeria monocytogenes is a low G+C, Gram-positive bacteria that is closely related to Bacillus, Clostridium, Enterococcus, Streptococcus, and Staphylococcus. L. monocytogenes are facultativly anaerobic, catalase-positive rods of 0.4 by 1 to 1.5 µm that do not form spores, have no capsule, and are motile at 10 to 25 degrees Celcius. They can cause serious, localized and generalized infections in humans and a variety of other vertebrates, including domesticated and wild birds and mammals. Listeria microorganisms were discovered in 1924, at Cambridge University by E.G.D. Murray, R.A. Webb, and M.B.R. Swann as the etiological agent of a septicemic disease affecting rabbits and guinea pigs (1).

iii. Variants

Listeria monocytogenes serotype 1/2a
Taxonomy ID: 169963

Listeria monocytogenes serotype 4b
Taxonomy ID: 265669

B. Lifecycle and Morphology

1. Intracellular:

The intracellular phase of the life cycle involves early escape from the phagocytic vacuole, rapid multiplication within the cytoplasm, bacterially induced actin-based motility, and direct spread to neighboring cells, in which the cycle is reinitiated. This shelters the spread of Listeriae from the humoral immune system (1).

To contribute a blurb on lifecycle, serotypes or handling the organism in healthcare or laboratory facilities, please contact help@nmpdr.org Your contribution will be credited with a byline.

a. Shape:

Regular, short rods with rounded ends, 0.4 μm by 1 - 1.5 μm. Some cells may be curved. Cells occur singly, or in short chains. Cells may be arranged at an angle to each other to give V-forms or in groups lying parallel along the long axis (2).

b. Picture:

SEM of Listeria monocytogenes

SEM image of Listeria in tissue by Elizabeth White, CDC

2. Environmental:


a. Picture:

SEM of Listeria monocytogenes biofilm

SEM image of Listeria after 2 days growth at 20° C on a stainless steel surface (size bar is 10 μm) by P. Chavant, M. Hébraud, B. Martinie, INRA, Theix

C. Genome Summary

1. Genome of Listeria monocytogenes 4b F2365

a. Chromosome

i. RefSeq Accession Number: NC_002973
ii. Size: 2,905,187 bp
iii. Serotype 4b (genomic division II) isolate from contaminated cheese that caused a lethal outbreak of listeriosis in 1985.

2. Genome of Listeria monocytogenes 1/2a EGD-e

a. Chromosome

i. RefSeq Accession Number: NC_003210


ii. Size: 2,944,528 bp
iii. Serotype 1/2a

3. Genome of Listeria monocytogenes 1/2a F6854

a. Chromosome

i. RefSeq Accession Number: NZ_AADQ00000000
ii. Size: 2,950,285 bp
iii. Serotype 1/2a

4. Genome of Listeria monocytogenes 4b H7858

a. Chromosome

i. RefSeq Accession Number: NZ_AADR00000000
ii. Size: 2,972,254 bp
iii. Serotype 4b



II. References

1.  Vazquez-Boland JA, Kuhn M, Berche P, Chakraborty T, Dominguez-Bernal G, Goebel W, Gonzalez-Zorn B, Wehland J, Kreft J. (2001) Listeria pathogenesis and molecular virulence determinants. Clin Microbiol Rev. 14(3):584-640.

2.  Bergey's Manual of Determinative Bacteriology, 9th edition. John G. Holt, Noel R. Krieg, Peter H.A. Sneath, James T. Staley, and Stanley T. Williams, editors. Baltimore: Williams and Wilkins, 1994, p.1235

3.   Mascola L, Lieb L., Chiu J, Fannin SL and Linnan MJ. (1988) Listeriosis: an uncommon opportunistic infection in patients with acquired immunodeficiency syndrome. A report of five cases and a review of the literature. Am. J. Med. 84: 162-164.

4. Todars Online Textbook of Bacteriology

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Listeria - Google News

©2017 Google

Fresh Foods Manufacturing Co. Recalls Chicken Products due to ... - USDA.gov (press release)


Fresh Foods Manufacturing Co. Recalls Chicken Products due to ...
USDA.gov (press release)
Fresh Foods Manufacturing Co., a Freedom, Pa. establishment, is recalling approximately 701 pounds of heat-treated, not fully cooked, not shelf stable chicken ...

and more »

Vegetable company recalls products across United States, Canada after listeria found - Miami Herald


mySanAntonio.com

Vegetable company recalls products across United States, Canada after listeria found
Miami Herald
Mann Packing has made a double nationwide recall -- United States and Canada -- of over 20 vegetable products because they may be contaminated with listeria. While the FDA posted recall notice says no public agencies have linked any individual's ...
HEB recalls single-serving Asian Noodle Soups over possible listeriamySanAntonio.com
Listeria test prompts Mann's vegetable recall in Canada, U.S. Food ...Food Safety News
Mann's brand prepped salads, veggies, bowls recalled for possible Listeria (photo, product codes)cleveland.com
CTV News -Canadian Food Inspection Agency (press release)
all 44 news articles »

Trader Joe's: Kohlrabi Salad Blend may be contaminated with Listeria - WLOS


WLOS

Trader Joe's: Kohlrabi Salad Blend may be contaminated with Listeria
WLOS
ASHEVILLE, N.C. (WLOS) According to an alert from Trader Joe's, some bags of Kohlrabi Salad Blend have the potential to be contaminated with Listeria. Affected product has the SKU# 58614 and the date codes Best Before: OCT 14 2017, OCT 15 2017 ...
Trader Joe's Recalls Salad Blend Over Listeria FearsNBC New York
Trader Joe's Recalls Salad for Possible Listeria ContaminationSELF
Trader Joe's recalls salad nationwide for possible listeria ...WABC-TV
CBS Baltimore / WJZ -KENS 5 TV
all 17 news articles »

Fresh Foods Manufacturing Co. Recalls Chicken Products due to Possible Listeria Contamination - USDA.gov (press release)


Fresh Foods Manufacturing Co. Recalls Chicken Products due to Possible Listeria Contamination
USDA.gov (press release)
WASHINGTON, Oct. 20, 2017 Fresh Foods Manufacturing Co., a Freedom, Pa. establishment, is recalling approximately 701 pounds of heat-treated, not fully cooked, not shelf stable chicken products that may be adulterated with Listeria monocytogenes, the ...

Two Blue Bell Shareholders Sue Over Listeria Contamination - Houston Press


Houston Press

Two Blue Bell Shareholders Sue Over Listeria Contamination
Houston Press
It was truly remarkable (and a bit troubling) to see how many Blue Bell fans actually rallied to support the Brenham-based company in the aftermath of revelations about how the company had found listeria in facilities in Brenham; Sylacauga, Alabama ...

Freshcut veggies recalled across U.S. and Canada for Listeria ... - Food Safety News


Food Safety News

Freshcut veggies recalled across U.S. and Canada for Listeria ...
Food Safety News
Neither U.S. nor Canadian officials had posted it as of Thursday night, but a news release from Mann Packing Co. Inc. recalled almost 150 freshcut vegetable ...
Randalls, Tom Thumb and Albertsons stores in Texas, Louisiana ...PR Newswire (press release)

all 3 news articles »

Salad Mix From Trader Joe's Recalled For Potential Listeria - Consumerist


Salad Mix From Trader Joe's Recalled For Potential Listeria
Consumerist
Check your salad mix before you sit down to your next crunchy bowl of shredded kohlrabi, cabbage, and beets: Bags of that blend from Trader Joe's that were distributed nationwide have been recalled because they may contain Listeria monocytogenes, ...

Frozen vegetables recalled for possible listeria - KOAA.com ... - KOAA.com Colorado Springs and Pueblo News


KOAA.com Colorado Springs and Pueblo News

Frozen vegetables recalled for possible listeria - KOAA.com ...
KOAA.com Colorado Springs and Pueblo News
Several packages of vegetables are being recalled because they may be contaminated with listeria.
Packaged vegetables, sold across Colorado, recalled 9news.com9NEWS.com

all 2 news articles »

Trader Joe's recalls salad mix that may contain listeria - KOAT Albuquerque


KOAT Albuquerque

Trader Joe's recalls salad mix that may contain listeria
KOAT Albuquerque
Trader Joe's has issued a nationwide recall of its Kohlrabi Salad Blend (SKU#58614) with best before date codes of Oct. 14, Oct. 15 and Oct. 16, 2017. The salad mix was sold in stores nationwide and could potentially be contaminated with Listeria ...
Trader Joe's issues nationwide recall for salad mix that may contain listeriafox6now.com
Trader Joe's Kohlrabi salad recalled due to listeria concerns KRNVKRNV My News 4
RECALL NOTICE: Potential Listeria in Kohlrabi Salad Blend, Trader ...Peachtree Corners Life

all 4 news articles »

HEB issues voluntary recall of Asian Noodle Cups over listeria concerns - KXAN.com


KXAN.com

HEB issues voluntary recall of Asian Noodle Cups over listeria concerns
KXAN.com
SAN ANTONIO (KXAN) H-E-B issued a voluntary recall of some of their Asian Noodle Cups Friday after learning certain soups were made with vegetable products possibly contaminated with Listeria monocytogenes. The beef and chicken H-E-B brand ...
Certain HEB Single-Serving Soups RecalledU.S. News & World Report

all 8 news articles »

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Listeria genome sequence annotation status: click numbers to browse lists of genes or subsystems

Strain annotated in NMPDR Serotype Genome size, bp Protein Encoding Genes (PEGs) Sort Named genes in subsystems Named genes not in subsystems Hypothetical genes in subsystems Hypothetical genes not in subsystems Subsystems RNAs
Listeria innocua Clip11262 6a 3,011,208 3,007 1418(45.6%) 925(29.7%) 76(2.4%) 691(22.2%) 324 133
Listeria monocytogenes 10403S 1/2a 2,866,709 2,873 1268(43.7%) 966(33.3%) 53(1.8%) 614(21.2%) 296 74
Listeria monocytogenes Aureli 1997 4b 3,006,068 3,221 1345(41.1%) 1091(33.3%) 56(1.7%) 780(23.8%) 291 101
Listeria monocytogenes EGD-e 1/2a 2,944,528 2,867 1426(46.7%) 972(31.8%) 66(2.2%) 589(19.3%) 326 134
Listeria monocytogenes F6900 1/2a 2,958,319 3,262 1426(43.3%) 1081(32.8%) 58(1.8%) 726(22.1%) 294 74
Listeria monocytogenes FSL J1-194 1/2b 2,986,227 3,692 1589(42.4%) 1245(33.2%) 74(2.0%) 839(22.4%) 293 101
Listeria monocytogenes FSL J2-071 4c 3,149,923 3,373 1357(39.7%) 1143(33.4%) 56(1.6%) 862(25.2%) 293 94
Listeria monocytogenes FSL N1-017 4b 2,857,865 3,704 1636(43.7%) 1216(32.5%) 64(1.7%) 831(22.2%) 291 88
Listeria monocytogenes FSL N3-165 1/2a1 2,886,689 2,882 1296(44.4%) 940(32.2%) 54(1.8%) 630(21.6%) 296 84
Listeria monocytogenes FSL R2-503 1/2b 3,001,696 4,767 2030(42.2%) 1689(35.1%) 79(1.6%) 1016(21.1%) 292 99
Listeria monocytogenes J0161 1/2a 3,051,828 3,181 1334(41.5%) 1064(33.1%) 56(1.7%) 757(23.6%) 298 74
Listeria monocytogenes J2818 1/2a 2,971,223 3,177 1382(42.9%) 1050(32.6%) 57(1.8%) 735(22.8%) 295 97
Listeria monocytogenes str. 1/2a F6854 1/2a 2,950,285 2,972 1441(47.6%) 892(29.4%) 66(2.2%) 631(20.8%) 323 132
Listeria monocytogenes str. 4b F2365 4b 2,905,310 2,856 1384(46.1%) 911(30.3%) 62(2.1%) 648(21.6%) 318 130
Listeria monocytogenes str. 4b H7858 4b 2,972,254 3,068 1405(45.5%) 915(29.6%) 67(2.2%) 700(22.7%) 319 118
Listeria welshimeri serovar 6b str. SLCC5334 6b 2,814,130 2,708 1196(42.8%) 940(33.7%) 48(1.7%) 609(21.8%) 295 152

Topic revision: r5 - 23 Aug 2008 - 11:07:32 - TWiki Guest
 
Notice to NMPDR Users - The NMPDR BRC contract has ended and bacterial data from NMPDR has been transferred to PATRIC (http://www.patricbrc.org), a new consolidated BRC for all NIAID category A-C priority pathogenic bacteria. NMPDR was a collaboration among researchers from the Computation Institute of the University of Chicago, the Fellowship for Interpretation of Genomes (FIG), Argonne National Laboratory, and the National Center for Supercomputing Applications (NCSA) at the University of Illinois. NMPDR is funded by the National Institute of Allergy and Infectious Diseases, National Institutes of Health, Department of Health and Human Services, under Contract HHSN266200400042C. Banner images are copyright © Dennis Kunkel.