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EVALUATION OF POTENTIAL SUBSTRATES TO MONITOR RESPIRATORY NITRATE REDUCTASE ACTIVITY IN SOILS
Author(s) -
RODGERS G. A.
Publication year - 1980
Publication title -
journal of soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.244
H-Index - 111
eISSN - 1365-2389
pISSN - 0022-4588
DOI - 10.1111/j.1365-2389.1980.tb02088.x
Subject(s) - nitrate , chemistry , soil water , selenate , chlorate , nitrate reductase , environmental chemistry , amendment , iodide , denitrification , anaerobic respiration , iodate , sulfate , anaerobic exercise , inorganic chemistry , environmental science , soil science , nitrogen , selenium , organic chemistry , physiology , political science , law , biology
Summary Different inorganic ions were tested for their ability to replace nitrate as the terminal oxidant for bacterial respiration in anaerobic soils. Chlorate, bromate. selenate. tellurite and ferric ions were all unsuitable substitutes, lodate reduction in soils was similar to nitrate reduction because it required anaerobic conditions, was increased by glucose amendment and decreased by phenylmercuric acetate. Amendment of soils with iodate and measurement of iodide production can be used to measure nitrate reductase activity in a soil and so give a qualitative indication, and possibly a quantitative estimate, of the denitrification capacity of soils.