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Nitrogen Fixation by Bacteria in the Root Zone of Rice
Author(s) -
Yoshida T.,
Ancajas Rosabel R.
Publication year - 1971
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1971.03615995003500010047x
Subject(s) - acetylene , nitrogen fixation , ethylene , bacteria , oryza sativa , nitrogen , fixation (population genetics) , dns root zone , chemistry , biology , botany , horticulture , agronomy , biochemistry , genetics , organic chemistry , irrigation , gene , catalysis
Atmospheric nitrogen is fixed in the root zone of rice plants ( Oryza sativa L.). Acetylene‐ethylene assay showed that bacteria, rather than the root tissues, do the fixation. Although the root tissues produce a trace of ethylene, they cannot reduce acetylene to ethylene. The apparent K m (Michaelis constant) of acetylene was much higher than values from known nitrogenfixing bacteria.