Cupriavidus necator
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Culture with colonies of Cupriavidus necator |
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| Scientific name | ||||||||||||
| Cupriavidus necator | ||||||||||||
| Makkar & Casida , 1987 |
Cupriavidus necator is a bacteria - kind from the family of burkholderiaceae . Earlier names are Alcaligenes eutrophus , Ralstonia eutropha , Wautersia eutropha and Hydrogenomonas eutropha .
Features and way of life
They are Gram-negative , rod-shaped, unicellular bacteria. They have a diameter of 0.7 to 0.9 µm and a length of 0.9 to 1.3 µm. They can move through two to ten peritrichal flagella . They multiply through binary cell division.
The bacterium occurs in soils and primarily utilizes the nutrients available there. If the nutrient content in the soil is too low, it can lyse other bacteria, but also fungi, and use them as a source of nutrition, including Agromyces ramosus , Bacillus subtilis , Bacillus thuringiensis , Escherichia coli and Staphylococcus aureus .
Like all species of the genus, Cupriavidus necator has a high tolerance to copper , the presence of which strongly stimulates its growth.
Systematics
Cupriavidus necator was first described in 1987 as a type of the genus by Narinder S. Makkar and Lester Earl Casida based on a find in University Park , Pennsylvania . The specific epithet means something like "killer" and refers to the optional killing of other bacteria.
use
Cupriavidus necator is used as an electron donor for autotrophic nitrate removal from drinking water with hydrogen. In addition, it can produce polyhydroxyalkanoates (PHA), especially polyhydroxybutyric acid (PHB), which is stored in the cells as a nutrient and energy reserve if there are a lot of carbon compounds that can be used for energy production in the habitat , but essential nutrients such as nitrogen or phosphorus lacks. Means of such cultures produced biopolymers (a subsidiary of were obtained from Zeneca ICI ) under the trade name "Biopol" developed.
proof
- NS Makkar, LE Casida: Cupriavidus necator gen. Nov., Sp. nov .; a Nonobligate Bacterial Predator of Bacteria in Soil. In: International Journal of Systematic and Evolutionary Microbiology, 37: 323-326, 1987, PDF Online
Individual evidence
The information in this article is taken from the literature given under Evidence; the following literature is also cited:
- ↑ Peter Vandamme, Tom Coenye: Taxonomy of the genus Cupriavidus: a tale of lost and found , In: International Journal of Systematic and Evolutionary Microbiology, 54, p. 2285, 2004, PDF Online ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.
- ↑ Armin K. Tiemeyer: Reaction technology studies on chemolithoautotrophic nitrate respiration of Cupriavidus necator , Dissertation TU Munich, 2007, PDF Online
further reading
- Jawed Asrar, Kenneth J. Gruys: Biodegradable Polymer (Biopol) , In: Alexander Steinbüchel (Ed.): Biopolymers , 2003, ISBN 3-527-30290-5 , PDF Online