Title: Acanthamoeba release compounds which promote growth of Listeria monocytogenes and other bacteria
Authors : Fieseler, Lars
Doyscher, Dominik
Loessner, Martin
Schuppler, Markus
Published in : Applied microbiology and biotechnology
Volume(Issue) : 98
Issue : 7
Pages : 3091
Pages to: 3097
Publisher / Ed. Institution : Springer
Issue Date: Apr-2014
License (according to publishing contract) : Licence according to publishing contract
Type of review: Peer review (publication)
Language : English
Subjects : Listeria monocytogenes; Acanthamoeba castellanii; Co-culture; Growth promotion; Secreted metabolites
Subject (DDC) : 570: Biology
Abstract: Listeria monocytogenes can grow as a saphrophyte in diverse habitats, e.g., soil, rivers, lakes, and on decaying plant material. In these environments, the bacteria are frequently exposed to predatory protozoa such as Acanthamoeba. Although L. monocytogenes is a facultative intracellular pathogen it does not infect or survive intracellular in Acanthamoeba castellanii, unlike several other facultative intracellular bacteria. Instead, motile L. monocytogenes can form large aggregates on amoebal cells and are effectively phagocytosed and eventually digested by Acanthamoeba. Here, we demonstrate that non-motile L. monocytogenes represent a less preferred prey in co-cultures with A. castellanii. Moreover, we found that the presence of Acanthamoeba strongly promotes growth of the bacteria in non-nutrient saline, by releasing nutrients or other growth promoters. Thus, the lack of motility and ability to utilize amoebal metabolites may aid to avoid eradication by amoebal predation in low-nutrient environments.
Departement: Life Sciences and Facility Management
Organisational Unit: Institute of Food and Beverage Innovation (ILGI)
Publication type: Article in scientific journal
DOI : 10.1007/s00253-014-5534-9
ISSN: 0175-7598
URI: https://digitalcollection.zhaw.ch/handle/11475/12263
Appears in Collections:Publikationen Life Sciences und Facility Management

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