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Preliminary study on relationships among strains forming a bacterial community selected on naphthalene from a marine sediment.
- Source :
-
Canadian journal of microbiology [Can J Microbiol] 1990 Oct; Vol. 36 (10), pp. 676-81. - Publication Year :
- 1990
-
Abstract
- Two bacterial strains were isolated from a bacterial community formed of nine strains, selected from a marine sediment on a seawater medium with naphthalene as sole carbon source. The two strains studied in the present work were the only strains of this community able to grow in pure culture on naphthalene; therefore, they were called "primary" strains. The seven other strains were maintained in the community by using metabolic intermediates of the two primary strains; they were called "auxiliary" strains. Regulation of naphthalene metabolism was studied for the two primary strains. They oxidized naphthalene into catechol, which was degraded only by the meta pathway. For Pseudomonas Lav. 4, naphthalene oxygenase and salicylate hydroxylase were inducible; catechol 2,3-dioxygenase was constitutive. For Moraxella Lav. 7, naphthalene oxygenase was constitutive; salicylate hydroxylase and catechol 2,3-oxygenase were inducible. The Moraxella strain carries two cryptic plasmids, about 63- and 85-kb in molecular size. In the bacterial community culture medium, Moraxella Lav. 7 prevented accumulation of 2-hydroxymuconate semialdehyde formed by Pseudomonas Lav. 4. The auxiliary strains take up formic, acetic, pyruvic, propionic, and succinic acids released by the two primary strains.
- Subjects :
- Biodegradation, Environmental
Catechols metabolism
Culture Media
Moraxella classification
Moraxella growth & development
Oxygenases metabolism
Plasmids
Pseudomonas classification
Pseudomonas growth & development
Salicylates metabolism
Seawater
Succinates metabolism
Moraxella metabolism
Naphthalenes metabolism
Pseudomonas metabolism
Water Microbiology
Water Pollution, Chemical
Subjects
Details
- Language :
- English
- ISSN :
- 0008-4166
- Volume :
- 36
- Issue :
- 10
- Database :
- MEDLINE
- Journal :
- Canadian journal of microbiology
- Publication Type :
- Academic Journal
- Accession number :
- 2253108
- Full Text :
- https://doi.org/10.1139/m90-115