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'''''Listeria innocua''''' is a species of [[Gram-positive]] [[Bacillus (shape)|rod-shaped]] bacteria. It is [[motile]], facultatively anaerobic, and non-[[spore]]-forming. ''L. innocua'' is non-pathogenic, and non-hemolytic. It was named ''innocua'' (innocuous) because as opposed to pathogenic ''[[Listeria monocytogenes]]'', ''L. innocua'' was not found to be generally infectious.<ref>{{cite journal |last1=Seeliger |last2=Schoofs |title=Nonpathogenic Listeriae: L. innocua sp.n. |journal=Zentralblatt für Bakteriologie, Mikrobiologie und Hygiene. 1. Abt. Originale. A, Medizinische Mikrobiologie, Infektionskrankheiten und Parasitologie |date=July 1981 |volume=249 |issue=4 |pages=487–493 |doi=10.1016/S0174-3031(81)80108-4}}</ref> Another ''[[Listeria]]'' species, [[L. seeligeri]], was named after one of discoverers of ''L. innocua''.
'''''Listeria innocua''''' is a species of [[Gram-positive]] [[Bacillus (shape)|rod-shaped]] bacteria. It is [[motile]], facultatively anaerobic, and non-[[spore]]-forming. It was named ''innocua'' (innocuous) because as opposed to pathogenic ''[[Listeria monocytogenes]]'', ''L. innocua'' was not found to be generally infectious.<ref>{{cite journal |last1=Seeliger |last2=Schoofs |title=Nonpathogenic Listeriae: L. innocua sp.n. |journal=Zentralblatt für Bakteriologie, Mikrobiologie und Hygiene. 1. Abt. Originale. A, Medizinische Mikrobiologie, Infektionskrankheiten und Parasitologie |date=July 1981 |volume=249 |issue=4 |pages=487–493 |doi=10.1016/S0174-3031(81)80108-4}}</ref> Another ''[[Listeria]]'' species, [[L. seeligeri]], was named after one of discoverers of ''L. innocua''.


''L. innocua'' is almost always non-hemolytic, but a few strains have been found to be hemolytic.<ref>{{cite journal |last1=Orsi |first1=Renato H. |last2=Wiedmann |first2=Martin |title=Characteristics and distribution of Listeria spp., including Listeria species newly described since 2009 |journal=Applied Microbiology and Biotechnology |date=29 April 2016 |volume=100 |issue=12 |pages=5273–5287 |doi=10.1007/s00253-016-7552-2}}</ref>
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Despite its name, and although it is not generally considered a pathogen in terms of human health,<ref name=Fatal>{{Cite web |url=https://jcm.asm.org/content/41/11/5308 |title=Fatal Case of Listeria innocua Bacteremia] |first1=Monique |last1=Perrin |first2=Michel |last2=Bemer |first3=Catherine |last3=Delamare |DOI=10.1128/JCM.41.11.5308-5309.2003 |date=20 August 2003 |website=jcm.asm.org |access-date= 23 July 2019}}</ref><ref name=eFa>{{Cite web |url=https://efoodalert.wordpress.com//?s=innocua&search=Go |title=Articles re Darwins Pet Foods (e.g. 'Darwin’s pet food Salmonella problem dates back to 2016') |website=efoodalert.wordpress.com |access-date= 24 October 2019}}</ref> ''Listeria innocua'' is not an entirely innocuous organism, having been identified in 2003 as the cause of a death of a 62-year-old, otherwise healthy, woman.<ref name=Fatal/>

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Despite its name, and although it is not generally considered a pathogen in terms of human health, ''Listeria innocua'' was identified in 2003 as the cause of a death of a 62-year-old, otherwise healthy, woman.<ref name=Fatal>{{Cite web |url=https://jcm.asm.org/content/41/11/5308 |title=Fatal Case of Listeria innocua Bacteremia] |first1=Monique |last1=Perrin |first2=Michel |last2=Bemer |first3=Catherine |last3=Delamare |DOI=10.1128/JCM.41.11.5308-5309.2003 |date=20 August 2003 |website=jcm.asm.org |access-date= 23 July 2019}}</ref><ref name=eFa>{{Cite web |url=https://efoodalert.wordpress.com//?s=innocua&search=Go |title=Articles re Darwins Pet Foods (e.g. 'Darwin’s pet food Salmonella problem dates back to 2016') |website=efoodalert.wordpress.com |access-date= 24 October 2019}}</ref>


As with other species in the genus, ''L. innocua'' occurs commonly in the environment (such as soil) and in food.<ref>{{Cite web |url=https://microbewiki.kenyon.edu/index.php/Listeria_innocua |title=A Microbial Biorealm page on the genus Listeria innocua|website=microbewiki.kenyon.edu|access-date= 23 July 2019}}</ref>
As with other species in the genus, ''L. innocua'' occurs commonly in the environment (such as soil) and in food.<ref>{{Cite web |url=https://microbewiki.kenyon.edu/index.php/Listeria_innocua |title=A Microbial Biorealm page on the genus Listeria innocua|website=microbewiki.kenyon.edu|access-date= 23 July 2019}}</ref>

Revision as of 15:07, 2 December 2019

Listeria innocua
Scientific classification Edit this classification
Domain: Bacteria
Phylum: Bacillota
Class: Bacilli
Order: Bacillales
Family: Listeriaceae
Genus: Listeria
Species:
L. innocua
Binomial name
Listeria innocua
(ex Seeliger and Schoofs 1979) Seeliger 1983

Listeria innocua is a species of Gram-positive rod-shaped bacteria. It is motile, facultatively anaerobic, and non-spore-forming. It was named innocua (innocuous) because as opposed to pathogenic Listeria monocytogenes, L. innocua was not found to be generally infectious.[1] Another Listeria species, L. seeligeri, was named after one of discoverers of L. innocua.

L. innocua is almost always non-hemolytic, but a few strains have been found to be hemolytic.[2]

Despite its name, and although it is not generally considered a pathogen in terms of human health, Listeria innocua was identified in 2003 as the cause of a death of a 62-year-old, otherwise healthy, woman.[3][4]

As with other species in the genus, L. innocua occurs commonly in the environment (such as soil) and in food.[5]

It is sometimes tested for in the laboratory as an indicator of the survivability of other similar species (and in particular other species of Listeria).[4][6]

Knowledge of its specific structure has been refined during the 2000s, in particular to establish its distinction from Listeria monocytogenes.[7]

References

  1. ^ Seeliger; Schoofs (July 1981). "Nonpathogenic Listeriae: L. innocua sp.n.". Zentralblatt für Bakteriologie, Mikrobiologie und Hygiene. 1. Abt. Originale. A, Medizinische Mikrobiologie, Infektionskrankheiten und Parasitologie. 249 (4): 487–493. doi:10.1016/S0174-3031(81)80108-4.
  2. ^ Orsi, Renato H.; Wiedmann, Martin (29 April 2016). "Characteristics and distribution of Listeria spp., including Listeria species newly described since 2009". Applied Microbiology and Biotechnology. 100 (12): 5273–5287. doi:10.1007/s00253-016-7552-2.
  3. ^ Perrin, Monique; Bemer, Michel; Delamare, Catherine (20 August 2003). "Fatal Case of Listeria innocua Bacteremia]". jcm.asm.org. doi:10.1128/JCM.41.11.5308-5309.2003. Retrieved 23 July 2019.
  4. ^ a b "Articles re Darwins Pet Foods (e.g. 'Darwin's pet food Salmonella problem dates back to 2016')". efoodalert.wordpress.com. Retrieved 24 October 2019.
  5. ^ "A Microbial Biorealm page on the genus Listeria innocua". microbewiki.kenyon.edu. Retrieved 23 July 2019.
  6. ^ "J. Johnson et al., Appl Environ Microbiol. 2004 Jul; 70(7): 4256–4266. Natural Atypical Listeria innocua Strains with Listeria monocytogenes Pathogenicity Island 1 Genes". www.ncbi.nlm.nih.gov. Retrieved 24 October 2019.
  7. ^ Natural Atypical Listeria innocua Strains with Listeria monocytogenes Pathogenicity Island 1 Genes J. Johnson,1 K. Jinneman,1 G. Stelma,2 B. G. Smith,2 D. Lye,2 J. Messer,2 J. Ulaszek,3 L. Evsen,4 S. Gendel,5 R. W. Bennett,5 B. Swaminathan,6 J. Pruckler,6 A. Steigerwalt,6 S. Kathariou,7 S. Yildirim,7 D. Volokhov,8 A. Rasooly,5 V. Chizhikov,8 M. Wiedmann,9 E. Fortes,9 R. E. Duvall,5 and A. D. Hitchins5,* Appl Environ Microbiol. 2004 Jul; 70(7): 4256–4266. ncbi.nlm.nih.gov Accessed 23 July 2019
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