The soil microbiota of a grassy ecosystem in the subalpine belt of the Rila Mountain National Park showed greater amounts of fungal biomass. This remained relatively constant throughout the months of sampling while bacterial biomass was a dynamic value fluctuating within a wide range. The two groups of microorganisms also differed in their in-depth distribution in the soil profile: the bacterial biomass was relatively homogeneously distributed while the fungal biomass gradually decreased with depth. Good correlation between the amount of biomass and the values of some abiotic factors of the environment was shown by correlation analysis in a "warm" period of investigation; no distinct correlation between microbial biomass and environmental factors was observed in a "cold" period.

• MeSH
• Bacteria * MeSH
• biomasa * MeSH
• ekosystém * MeSH
• houby * MeSH
• lipnicovité * MeSH
• nadmořská výška MeSH
• půda analýza   MeSH
• půdní mikrobiologie * MeSH
• roční období MeSH
• Publikační typ
• časopisecké články MeSH
• Názvy látek
• půda MeSH

The survival of Herbaspirillum spp. cells added directly or encapsulated in alginate beads and colonization of wheat roots was evaluated in soil microcosms. Cells entrapped in alginate in the presence of JNFb-broth and introduced into unplanted non-sterile clay loamy and sandy soils survived better than cells added directly to the same soils after 50 d incubation. On amendment by JNFb broth and/or skim milk the entrapped cells survived better than those prepared in water. Encapsulated cells survived better in a heavier textured soil (clay-loamy) than in a lighter (sandy) soil. Wheat plants growing in microcosms inoculated with various bead types from day 0 to day 30 exhibited high levels of histosphere colonization, nitrogenase activity (in situ) measured by acetylene reduction assay, plant dry mass and total N content but no symptoms of mottled stripe disease were observed. Comparable results of growth criteria and nitrogenase activity, but relatively lower bacterial populations, were obtained with wheat grown for 45 d after the inoculant had been introduced into the soil with different bead types.

• MeSH
• algináty MeSH
• Betaproteobacteria růst a vývoj   MeSH
• ekosystém MeSH
• kořeny rostlin mikrobiologie   MeSH
• kultivační média MeSH
• mikrosféry MeSH
• pšenice mikrobiologie   MeSH
• půda MeSH
• půdní mikrobiologie MeSH
• Publikační typ
• časopisecké články MeSH
• Názvy látek
• algináty MeSH
• kultivační média MeSH
• půda MeSH