Details zur Publikation |
| Kategorie | Textpublikation |
| Referenztyp | Zeitschriften |
| DOI | 10.1007/s00248-019-01415-6 |
| Volltext | Akzeptiertes Manuskript |
| Titel (primär) | Biological soil crusts from different soil substrates harbor distinct bacterial groups with the potential to produce exopolysaccharides and lipopolysaccharides |
| Autor | Cania, B.; Vestergaard, G.; Kublik, S.; Köhne, J.M.; Fischer, T.; Albert, A.; Winkler, B.; Schloter, M.; Schulz, S. |
| Quelle | Microbial Ecology |
| Erscheinungsjahr | 2020 |
| Department | BOSYS |
| Band/Volume | 79 |
| Heft | 2 |
| Seite von | 326 |
| Seite bis | 341 |
| Sprache | englisch |
| Supplements | https://static-content.springer.com/esm/art%3A10.1007%2Fs00248-019-01415-6/MediaObjects/248_2019_1415_MOESM1_ESM.pdf https://static-content.springer.com/esm/art%3A10.1007%2Fs00248-019-01415-6/MediaObjects/248_2019_1415_MOESM2_ESM.pdf |
| Keywords | Biological soil crusts; Exopolysaccharides; Lipopolysaccharides; Microbiome; Metagenomics |
| Abstract |
Biological soil crusts (biocrusts) play an important
role in improving soil stability and resistance to erosion by promoting
aggregation of soil particles. During initial development, biocrusts are
dominated by bacteria. Some bacterial members of the biocrusts can contribute
to the formation of soil aggregates by producing exopolysaccharides and
lipopolysaccharides that act as “glue” for soil particles. However, little is
known about the dynamics of “soil glue” producers during the initial
development of biocrusts. We hypothesized that different types of initial
biocrusts harbor distinct producers of adhesive polysaccharides. To investigate
this, we performed a microcosm experiment, cultivating biocrusts on two soil
substrates. High-throughput shotgun sequencing was used to obtain metagenomic
information on microbiomes of bulk soils from the beginning of the experiment,
and biocrusts sampled after 4 and 10 months of incubation. We discovered that
the relative abundance of genes involved in the biosynthesis of
exopolysaccharides and lipopolysaccharides increased in biocrusts compared with
bulk soils. At the same time, communities of potential “soil glue” producers
that were highly similar in bulk soils underwent differentiation once biocrusts
started to develop. In the bulk soils, the investigated genes were harbored
mainly by Betaproteobacteria, whereas in the biocrusts, the major potential
producers of adhesive polysaccharides were, aside from Alphaproteobacteria, either Cyanobacteria or Chloroflexi and Acidobacteria. Overall, our results indicate that the potential
to form exopolysaccharides and lipopolysaccharides is an important bacterial
trait for initial biocrusts and is maintained despite the shifts in bacterial
community composition during biocrust development. |
| dauerhafte UFZ-Verlinkung | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=22755 |
| Cania, B., Vestergaard, G., Kublik, S., Köhne, J.M., Fischer, T., Albert, A., Winkler, B., Schloter, M., Schulz, S. (2020): Biological soil crusts from different soil substrates harbor distinct bacterial groups with the potential to produce exopolysaccharides and lipopolysaccharides Microb. Ecol. 79 (2), 326 - 341 10.1007/s00248-019-01415-6 |
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