Phenotypic variation and morphological changes in starved denitrifying Aeromonas hydrophila

Autor:	Chédia Jabeur, Ali Ellafi, Amina Bakhrouf, Besma Harbi
Rok vydání:	2012
Předmět:	Aeromonas hydrophila Denitrifying bacteria Biochemistry biology Aeromonas Strain (chemistry) biology.organism_classification Nitrite reductase Nitrate reductase Applied Microbiology and Biotechnology Incubation Bacteria Microbiology
Zdroj:	Annals of Microbiology. 63:1039-1045
ISSN:	1869-2044 1590-4261
Popis:	In this study, an Aeromonas hydrophila identified as a denitrifying bacterium by PCR detection of nitrate reductase (narG) and nitrite reductase (nirK) genes was incubated in seawater microcosms for 8 months at room temperature and at 4 °C. A study of the phenotypic variation demonstrated that A. hydrophila becomes gelatinase-positive after the incubation in sea water. We noted that starved A. hydrophila becomes unable to produce leucine arylamidase, and that the starved strain appears to grow more slowly. Indeed, we also observed a severe decrease in cellular aggregation of Aeromonas after incubation. In addition, atomic force micrographs revealed a reduction in cell size.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::888c68f0dff5dfd1f205b3a7bb4970ce https://doi.org/10.1007/s13213-012-0560-2 Zobrazit plný text záznamu Full text from SpringerLink