Abstract
The effects of water potential on the cellular compositions of a soil bacterium and a fungus were examined by growing the organisms in media with various KCl concentrations. In media containing up to 1 M KCl, C/N ratios in Aspergillus flavus increased significantly, while those for a Pseudomonas sp. did not. For both organisms, the proportions of cellular C and N in cytoplasm increased by a factor of 10 as salinity increased from 0 to 1 M KCl. Such compositional changes have implications for microbial biomass dynamics in soils of varying water potential and for biomass measurement by chloroform fumigation.
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Selected References
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- Killham K., Firestone M. K. Salt stress control of intracellular solutes in streptomycetes indigenous to saline soils. Appl Environ Microbiol. 1984 Feb;47(2):301–306. doi: 10.1128/aem.47.2.301-306.1984. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Reed R. H., Chudek J. A., Foster R., Gadd G. M. Osmotic significance of glycerol accumulation in exponentially growing yeasts. Appl Environ Microbiol. 1987 Sep;53(9):2119–2123. doi: 10.1128/aem.53.9.2119-2123.1987. [DOI] [PMC free article] [PubMed] [Google Scholar]