Physiology and microbial community structure in soil at extreme water content
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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.
- MeSH
- Actinobacteria růst a vývoj izolace a purifikace MeSH
- Bacteria klasifikace růst a vývoj izolace a purifikace MeSH
- biomasa MeSH
- ekosystém * MeSH
- fosfolipidy analýza MeSH
- gramnegativní bakterie růst a vývoj izolace a purifikace MeSH
- grampozitivní bakterie růst a vývoj izolace a purifikace MeSH
- mastné kyseliny analýza MeSH
- půda analýza MeSH
- půdní mikrobiologie * MeSH
- spotřeba kyslíku MeSH
- voda analýza MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Názvy látek
- fosfolipidy MeSH
- mastné kyseliny MeSH
- půda MeSH
- voda MeSH