Magnetospirillum magnetotacticum

Magnetospirillum magnetotacticum
	Magnetospirillum magnetotacticum
Systematics
Department :	Proteobacteria
Class :	Alphaproteobacteria
Order :	Rhodospirillales
Family :	Rhodospirillaceae
Genre :	Magnetospirillum
Type :	Magnetospirillum magnetotacticum
Scientific name
	Magnetospirillum magnetotacticum
	(Maratea & Blakemore 1981) Schleifer et al. 1992

Magnetospirillum magnetotacticum is a gram-negative , microaerophilic , spiral-shaped, scourge- agile and aerotaxis- capable bacteriumdiscoveredby RP Blakemore in1975. It occurs in the sediment layer of oxygen-poor waters. The species was originally described with a different name ( Aquaspirillum magnetotacticum ) in1981,assigned tothe newly proposed genus Magnetospirillum in 1991and confirmed in 1992 with the new name Magnetospirillum magnetotacticum . The name was changed because of the similarity to Magnetospirillum gryphiswaldense .

The most notable property of M. magnetotacticum is the ability to magnetotaxis . For this purpose, the bacterium has its own organelles in the cytoplasm , the magnetosomes , which consist of magnetite chains.

Similar magnetite chains were found in 1996 by NASA researchers in the Mars meteorite ALH 84001 , which they viewed as an indication of the possible existence of life on this planet . So far, however, no evidence of life on Mars has been found.

literature

EI Friedmann, J. Wierzchos, C. Ascaso, J. Winklhofer: "Chains of magnetite crystals in the meteorite ALH84001: evidence of biological origin." , in: Proceedings of the National Academy of Sciences USA; 2001 Feb 27; 98 (5): 2176-81.

CP McKay, EI Friedmann, RB Frankel, DA Bazylinski (2003): "Magnetotactic bacteria on Earth and on Mars." , in: Astrobiology. 2003 Summer; 3 (2): 263-70.

Blakemore, RP (1975): Magnetotactic bacteria . Science 190: 77-379

Blakemore, RP (1982): Magnetotactic bacteria . Annu Rev Microbiol 36: 217-238

Blakemore, RP, Frankel, RB (1981): Magnetic navigation in bacteria . Sci Amer 245: 42-49

Shih-Bin Robin Chang & Joseph Lynn Kirschvink (1989): MAGNETOFOSSILS, THE MAGNETIZATION OF SEDIMENTS, AND THE EVOLUTION OF MAGNETITE BIOMINERALIZATION . Ann. Rev. Earth Planet. Sci. 1989. 17: 169-95

Databases

LPSN , keyword "Magnetospirillum" - http://www.bacterio.net/magnetospirillum.html
NCBI , Taxonomy browser, keyword "Magnetospirillum magnetotacticum" - https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?id=188

Individual evidence

↑ D. MARATEA, RP BLAKEMORE: Aquaspirillum magnetotacticum sp. nov., a Magnetic Spirillum. In: International Journal of Systematic Bacteriology. 31, 1981, p. 452, doi: 10.1099 / 00207713-31-4-452 .
^ KH Schleifer, D. Schüler, S. Spring, M. Weizenegger, R. Amann, W. Ludwig, M. Köhler: The Genus Magnetospirillum gen. Nov. Description of Magnetospirillum gryphiswaldense sp. nov. and Transfer of Aquaspirillum magnetotacticum to Magnetospirillum magnetotacticum comb. nov. In: Systematic and Applied Microbiology . tape 14 , no. 4 , October 1991, p. 379-385 ., Doi : 10.1016 / S0723-2020 (11) 80313-9 .
↑ IUMS : Validation of the publication of new names and new combinations previously effectively published outside the IJSB. List No. 40. In: International journal of systematic bacteriology. Volume 42, Number 1, January 1992, pp. 191-192, doi: 10.1099 / 00207713-42-1-191 , PMID 1736967 .

[DOI10.1099/00207713-31-4-452-1] D. MARATEA, RP BLAKEMORE: Aquaspirillum magnetotacticum sp. nov., a Magnetic Spirillum. In: International Journal of Systematic Bacteriology. 31, 1981, p. 452, doi: 10.1099 / 00207713-31-4-452 .

[DOI10.1016/S0723-2020(11)80313-92-2] KH Schleifer, D. Schüler, S. Spring, M. Weizenegger, R. Amann, W. Ludwig, M. Köhler: The Genus Magnetospirillum gen. Nov. Description of Magnetospirillum gryphiswaldense sp. nov. and Transfer of Aquaspirillum magnetotacticum to Magnetospirillum magnetotacticum comb. nov. In: Systematic and Applied Microbiology . tape 14 , no. 4 , October 1991, p. 379-385 ., Doi : 10.1016 / S0723-2020 (11) 80313-9 .

[PMID1736967-3] IUMS : Validation of the publication of new names and new combinations previously effectively published outside the IJSB. List No. 40. In: International journal of systematic bacteriology. Volume 42, Number 1, January 1992, pp. 191-192, doi: 10.1099 / 00207713-42-1-191 , PMID 1736967 .