Effect of short-term salinity on the nitrate reductase activity in cucumber roots

Plant Science ◽  
2011 ◽  
Vol 180 (6) ◽  
pp. 783-788 ◽  
Author(s):  
Małgorzata Reda ◽  
Magdalena Migocka ◽  
Grażyna Kłobus
Keyword(s):  
Nitrate Reductase ◽  
Nitrate Reductase Activity ◽  
Reductase Activity ◽  
Short Term ◽  
Cucumber Roots

scholarly journals The dependence of nitrate reductase activity on the level of soluble sugars in wheat and cucumber roots growing in the presence of simazine, in light or in darkness

2014 ◽  
Vol 55 (4) ◽  
pp. 589-600 ◽  
Author(s):  
Józef Buczek ◽  
Jacek Borkowski ◽  
Irena Jarzyńska
Keyword(s):  
Nitrate Reductase ◽  
Malate Dehydrogenase ◽  
Nitrate Reductase Activity ◽  
Reductase Activity ◽  
Soluble Sugars ◽  
Inhibitory Effect ◽  
Wheat Roots ◽  
Cucumber Roots ◽  
Glucose 6 Phosphate Dehydrogenase ◽  
Complex Influence

At concentrations of 25 and 5 µM, simazine inhibited nitrate reductase activity in wheat and cucumber roots, respectively. It also lowered the content of soluble sugars and decreased the activities of NADH malate dehydrogenase and NADP<sup>+</sup> glucose-6-phosphate dehydrogenase. The inclusion of 50 mM glucose into the medium partially reversed the inhibitory effect of simazine on the activity of nitrate reductase in cucumber roots and slightly increased the activity of this enzyme in wheat roots These results suggest a complex influence of the herbicide on the activity of nitrate reductase: simazine lowers the level of soluble sugars in roots and decreases the activity of the dehydrogenases supplying the reduced nucleotides indispensable for reduction of nitrates.

Short-term effects of nitrate on nitrate reductase activity and symbiotic dinitrogen fixation in faba bean and pea

1988 ◽  
Vol 66 (8) ◽  
pp. 1639-1645 ◽  
Author(s):  
Francois-P. Chalifour ◽  
Louise M. Nelson
Keyword(s):  
Nitrate Reductase ◽  
Faba Bean ◽  
Nitrite Reductase ◽  
Nitrate Reductase Activity ◽  
Reductase Activity ◽  
Inhibitory Effects ◽  
Short Term ◽  
Pisum Sativum L ◽  
Vicia Faba L ◽  
Legume Symbiosis

The effects of a short-term supply of combined nitrogen (N) on the Rhizobium–legume symbiosis were studied in faba bean (Vicia faba L.) and pea (Pisum sativum L.) nodulated by R. leguminosarum biovar viceae isolate 175F5 or 175F19 and subjected to increasing levels of [Formula: see text] (0, 5, 10, or 20 mol∙m−3) from 28 to 36 days after planting. Trends in N2-fixing activity (acetylene reduction) showed that faba bean was more tolerant to [Formula: see text] than pea with isolate 175F5 but not with isolate 175F19. Nitrite reductase activities in the leaf, root, and nodule cytosol fractions were severalfold higher than nitrate reductase activities for both hosts. The levels of these enzymes in the nodule cytosol, the absence of bacteroid nitrate reductase and the lack of induction of bacteroid nitrite reductase in response to [Formula: see text] addition are consistent with the lack of [Formula: see text] accumulation in nodules of both hosts. Therefore, it is unlikely that the inhibitory effects of [Formula: see text] on N2 fixation are due to [Formula: see text] inhibition of nitrogenase. The relative levels of nitrate reductase activity in the root and nodule cytosol fractions were, respectively, higher and lower in the two faba bean symbioses ([Formula: see text] tolerant) and in the pea–175F5 symbiosis ([Formula: see text] sensitive) than in the pea–175F19 symbiosis ([Formula: see text] tolerant).

The Effect of Short-Term H2S Fumigation on Nitrate Reductase Activity in Spinach Leaves

1986 ◽  
Vol 27 (7) ◽  
pp. 1249-1254 ◽  
Author(s):  
Luiet J. De Kok ◽  
Ineke Stulen ◽  
Wiebe Bosma ◽  
Jikkie Hibma
Keyword(s):  
Nitrate Reductase ◽  
Nitrate Reductase Activity ◽  
Reductase Activity ◽  
Short Term ◽  
Spinach Leaves

Nitrate Reductase Activity of Maize Hybrids and Their Parental Inbred 1

Crop Science ◽  
1966 ◽  
Vol 6 (2) ◽  
pp. 169-173 ◽  
Author(s):  
L. E. Schrader ◽  
D. M. Peterson ◽  
E. R. Leng ◽  
R. H. Hageman
Keyword(s):  
Nitrate Reductase ◽  
Nitrate Reductase Activity ◽  
Reductase Activity ◽  
Maize Hybrids ◽  
Parental Inbred

Chromosomal Control of Nitrate Reductase Activity in Hexaploid Wheat 1

Crop Science ◽  
1982 ◽  
Vol 22 (1) ◽  
pp. 85-88 ◽  
Author(s):  
E. L. Deckard ◽  
N. D. Williams ◽  
J. J. Hammond ◽  
L. R. Joppa
Keyword(s):  
Nitrate Reductase ◽  
Hexaploid Wheat ◽  
Nitrate Reductase Activity ◽  
Reductase Activity
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