Summary
The streptomycetes studied released into the medium the following organic acids: pyruvic, α-ketoglutaric, lactic, malic (or citric), succinic and oxalic. Soil streptomycetes produced more α-ketoglutaric-, lactic- and succinic acid than the root zone microorganisms. Mean indices of the total production of organic acids were in the following order: soil>rhizosphere>mycorrhizosphere. Amounts of pyruvic acid excreted by the soil streptomycetes were inversely proportional to their biomass, whereas those of α-ketoglutaric acid were directly proportional to dry weight. Small repeatability of the results of α-keto acids determinations in these organisms was stated.
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Rózycki, H., Strzelczyk, E. Organic acids production byStreptomyces spp. isolated from soil, rhizosphere and mycorrhizosphere of pine (Pinus sylvestris L.). Plant Soil 96, 337–345 (1986). https://doi.org/10.1007/BF02375138
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DOI: https://doi.org/10.1007/BF02375138