Physiology and microbial community structure in soil at extreme water content
Language English Country United States Media print
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
16110922
DOI
10.1007/bf02931466
Knihovny.cz E-resources
- MeSH
- Actinobacteria growth & development isolation & purification MeSH
- Bacteria classification growth & development isolation & purification MeSH
- Biomass MeSH
- Ecosystem * MeSH
- Phospholipids analysis MeSH
- Gram-Negative Bacteria growth & development isolation & purification MeSH
- Gram-Positive Bacteria growth & development isolation & purification MeSH
- Fatty Acids analysis MeSH
- Soil analysis MeSH
- Soil Microbiology * MeSH
- Oxygen Consumption MeSH
- Water analysis MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- Phospholipids MeSH
- Fatty Acids MeSH
- Soil MeSH
- Water MeSH
A sandy loam soil was brought to 6 water contents (13-100% WHC) to study the effects of extreme soil moistures on the physiological status of microbiota (represented by biomass characteristics, specific respiration, bacterial growth, and phospholipid fatty acid, PLFA, stress indicators) and microbial community structure (assessed using PLFA fingerprints). In dry soils, microbial biomass and activity declined as a consequence of water and/or nutrient deficiency (indicated by PLFA stress indicators). These microbial communities were dominated by G+ bacteria and actinomycetes. Oxygen deficits in water-saturated soils did not eliminate microbial activity but the enormous accumulation of poly-3-hydroxybutyrate by bacteria showed the unbalanced growth in excess carbon conditions. High soil water content favored G bacteria.
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