Myxobakterien in ungestörten Hochmooren des Hohen Venn (Hautes Fagnes, Belgien)

Dawid, W.

doi:10.1016/s0723-2020(84)80013-2

“…During the whole study three methods for the enrichment of myxobacteria were applied [28,30,40,97,98]:…”

Section: Critical Evaluation Of the Methods Usedmentioning

confidence: 99%

“…This could be explained by the regular annual hot dry period in the humid warm climate belt, besides the fact that myxobacteria can survive long periods of dryness and thus reduce the di¡erence between the two climate zones. [28]. Based on experimental data it had been generally assumed that myxobacteria occur only in soils of neutral to slightly alkaline pH values [23,126,127], although Ru « ckert [96] had pointed out that especially Myxococcus species may be found also in soils with a pH below 5.…”

Section: Comparison Of the Myxo£oras Of Two Climate Zonesmentioning

confidence: 99%

Biology and global distribution of myxobacteria in soils

Dawid

¹

2000

FEMS Microbiology Reviews

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This review presents an overview of the present status of the biology of the myxobacteria, including the molecular biology of the systems that control and regulate myxobacterial gliding movement and morphogenesis. The present status of myxobacterial taxonomy and phylogeny is described. The evolutionary biology of the myxobacteria is emphasized with respect to their social behavior and the molecular basis of their signal chains. Most important within the metabolic physiology are the biologically active secondary metabolites of myxobacteria and their molecular mechanisms of action. The global distribution of myxobacteria in soils is described on the basis of data given in the literature as well as of comprehensive analyses of 1398 soil samples from 64 countries of all continents. The results are analyzed with respect to the spectrum and number of species depending on ecological and habitat-specific factors. The myxobacterial floras of different climate zones are compared. Included are myxobacterial species adapted to extreme biotopes. The efficiency of different methods used presently for isolation of myxobacteria is compared.

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“…Really astonishing was the discovery of myxobacteria ( Myxococcus , Corallococcus and Polyangium sp.) in peat bogs in the Rhön mountains in Germany (pH 3.2–4.8) and of the Hautes Fagnes/Hohe Venn at the Belgian–German border (pH 3.7, water content 91%, oxygen 2.58 mg l −1 ; Dawid, 1984). The samples were taken from the bog at a depth of 5–10 cm below the plant cover of about 10 cm.…”

Section: Myxobacteria Sometimes Settle In Special Habitatsmentioning

confidence: 99%

The ecology of the myxobacteria

Reichenbach

¹

1999

Environmental Microbiology

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What are myxobacteria?Myxobacteria are Gram-negative eubacteria with relatively large (0.6-1.2 by 3-15 m) rod-shaped cells. They live in soil and related habitats and are famous for three capabilities: (i) they move by gliding and their colonies are therefore thin, film-like swarms that spread gradually over the culture plate; (ii) they have sophisticated intercellular communication systems and a highly developed social life; and (iii) they show a remarkable morphogenetic potential, which is expressed on two levels. In a co-operative morphogenesis involving 10 5 -10 6 cells, induced by starvation conditions, they may produce a fruiting body. Within the maturing fruiting body, a cellular morphogenesis takes place, during which the vegetative cells convert into desiccation-resistant myxospores. It might also be mentioned that myxobacteria have the largest genomes of all bacteria (9500-10 000 kbp) and a DNA with a G þ C content of 66-72 mol%. Details can be found in several reviews (Reichenbach and

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“…Peat bogs or mosses and moors are usually biotopes with rather low pH values and deficiency of nutrients. Such undisturbed, intact acid (pH 3.7) high moors in Belgium (Haute Fagne) were studied by Dawid [28,98–100], who found that only three species lived in this environment: Mx. fulvus , Mx.…”

Section: Global Distribution Of Myxobacteria In Soilsmentioning

confidence: 99%

“…It was surprising that in extremely acid environments like peat bogs (pH 3.2–3.3) myxobacteria occurred at all. In samples from undisturbed peat bogs in Belgium (Haute Fagne) Myxococcus and Polyangium species were found [28]. Based on experimental data it had been generally assumed that myxobacteria occur only in soils of neutral to slightly alkaline pH values [23,126,127], although Rückert [96] had pointed out that especially Myxococcus species may be found also in soils with a pH below 5.…”

Section: Global Distribution Of Myxobacteria In Soilsmentioning

confidence: 99%

Biology and global distribution of myxobacteria in soils

Dawid

¹

2000

Self Cite

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This review presents an overview of the present status of the biology of the myxobacteria, including the molecular biology of the systems that control and regulate myxobacterial gliding movement and morphogenesis. The present status of myxobacterial taxonomy and phylogeny is described. The evolutionary biology of the myxobacteria is emphasized with respect to their social behavior and the molecular basis of their signal chains. Most important within the metabolic physiology are the biologically active secondary metabolites of myxobacteria and their molecular mechanisms of action. The global distribution of myxobacteria in soils is described on the basis of data given in the literature as well as of comprehensive analyses of 1398 soil samples from 64 countries of all continents. The results are analyzed with respect to the spectrum and number of species depending on ecological and habitat-specific factors. The myxobacterial floras of different climate zones are compared. Included are myxobacterial species adapted to extreme biotopes. The efficiency of different methods used presently for isolation of myxobacteria is compared.

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Myxobakterien in ungestörten Hochmooren des Hohen Venn (Hautes Fagnes, Belgien)

Cited by 10 publications

References 5 publications

Biology and global distribution of myxobacteria in soils

Biology and global distribution of myxobacteria in soils

The ecology of the myxobacteria

Biology and global distribution of myxobacteria in soils

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