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Nitrogen fixation and nitrate reduction in the root nodules of legumes

AuthorsBecana Ausejo, Manuel ; Sprent, Janet Irene
nitrate assimilation
nodule senescence
Issue DateAug-1987
PublisherJohn Wiley & Sons
CitationPhysiologia Plantarum 70 (4): 757–765 (1987)
AbstractPublished data on, and hypotheses regarding the effect of NO−3 on functioning of legume root nodules are reviewed. It is concluded that a short-term reversible effect of NO−3 may act via an increased resistance to O2 diffusion in nodules; this is coupled to decreased bacteroid respiration. For longer exposures to NO−3 nodule activity is irreversibly lost, but how this relates to carbohydrate deprivation or NO-2 accumulation is unclear. Complicating factors include denitrification reactions and the interaction of NO−2 with leghaemoglobin.
Description9 Pags.
Publisher version (URL)http://dx.doi.org/10.1111/j.1399-3054.1987.tb04335.x
Appears in Collections:(EEAD) Artículos
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