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Soil Enzymes

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Soil Enzymes

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    1. Soil Enzymes

    3. Enzymes are proteins that allow reactions to proceed at faster rates by reducing the energy of activation of the reaction:

    10. Soil enzyme assays… Are based mostly on the quantification of the product (P) released upon adding known amount of substrate (S) to the soil, and allowing the reaction to occur under controlled temperature, pH and ionic strength. If an inhibitor (I) (i.e., metal) is present in the soil, EI and/or ESI complexes could be formed in addition to the ES (enzyme-substrate) complex normally formed.

    16. Amino acid mineralization in soils (begins by the release of amino acids from organic matter)

    18. Arylamidase Activity

    19. L-Asparaginase activity

    20. L-Aspartase activity

    21. L-Glutaminase activity

    22. Amidase activity

    23. b-Glucosiminidase Activity in Soils

    24. Urease activity

    40. References Burns, R.G. (1982). Enzyme activity in soil: Location and a possible role in microbial ecology. Soil Biol. Biochem. 14: 423-427. Kiss, S., Dracan-Bularda, M., and Radulescu, D. (1975). Biological significance of enzymes accumulated in soil. Adv. Agron. 27: 25-87 Nannipieri, P. (1994) The potential use of soil enzymes as indicators of soil productivity, sustainability, and pollution. In: Soil biota: management in sustainable farming systems. Tabatabai, M. A. (1994). Soil enzymes. In “Methods of Soil Analysis” (R. W. Weaver, J. S. Angle, and P. S. Bottomley, eds.). Part 2. Microbiological and biochemical properties. p. 775-833. SSSA Book Series No. 5, Soil Sci. Soc. Am., Madison, WI.

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