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Denitrification in intact lucerne plants

Journal of Plant Physiology 146(4): 563-565
Denitrification in intact lucerne plants
Denitrification activity upon nitrate supply by intact, attached nodules of lucerne has been measured. This activity clearly shows that nitrate is metabolised in nodules. However, the extent of such an activity was extremely low and only represented 2% of the potential activity of the isolated bacteroids. Also, this activity represented only 0.05% of the nitrogen fixation rate of these nodules. It is concluded that this process is of a very limited impact in normal circumstances and its physiological significance in nodules remains to be understood.

Accession: 002590455

DOI: 10.1016/s0176-1617(11)82024-9

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