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Geomikrobiologische Untersuchungen XIV. Schwermetall‐Toleranz desulfurizierender Bakterien unter verschiedenen ökologischen Bedingungen
Author(s) -
Brecklinghaus J.,
Schwartz W.,
Näveke R.
Publication year - 1981
Publication title -
zeitschrift für allgemeine mikrobiologie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.58
H-Index - 54
eISSN - 1521-4028
pISSN - 0044-2208
DOI - 10.1002/jobm.19810210202
Subject(s) - heavy metals , chemistry , bacteria , metal , environmental chemistry , biology , genetics , organic chemistry
Tolerance and adaptation to heavy metals of Desulfovibrio ‐ and Desulfotomaculum ‐strains of different origin have been investigated in enrichment cultures under different conditions of sulphate supply. Three groups of low, medium, and high toxicity were found with As, V, and Mo in the first, Ni, Sb, Co, and Hg in the second, and Cd, Zn, U, and Cu in the third group. If the SO 4 ″‐supply was restricted to heavy metal sulphates with a relation of 1:1 of heavy metal‐ and SO 4 ″‐ions (2:3 with Sb 2 (SO 4 ) 3 ) the tolerance was somewhat lowered. Adaptation to higher concentrations of heavy metals was possible, if the strains had not yet been exposed and adapted to higher concentration levels at their natural habitats. The tolerance range of desulfurizers has been compared with the tolerance range of different biochemical types of microorganisms.