Nitrate reductase activity in cabbage (Brassica oleracae var. capitata) seedlings affected by the different nitrogen fertilizer forms

The effect of different nitrogen fertilizer (potassium nitrate, ammonium nitrate, ammonium sulphate, urea and farmyard manure) on nitrate reductase activity in cabbage (Brassica oleracea var. capitata) seedlings were studied. pH of the plant growth niedia was higher in the nitrate fertilizer treatment than the ammonium and other fertilizer forms. NO3--N application increased NRA in plant, but NH4+-N decreased NRA in plant. Harvesting date and different fertilizer doses increased NRA while NH4+-N decreased plant nitrate uptake. There was a significant relationship between NRA and fertilizer types.

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THE EFFECT OF PURIFIED AMOUNT OF TRITERPENE GLYCOSIDES AND THEIR ENRICHED EXTRACT FROM LEAVES OF SILPHIUM PERFOLIATUM L. ON THE GROWTH AND ACTIVITY OF NITRATE REDUCTASE OF WIN-TER WHEAT PLANTS

chemistry of plant raw material ◽

10.14258/jcprm.2019045482 ◽

2019 ◽

pp. 441-448 ◽

Cited By ~ 1

Author(s):

Eleonora Sergeyevna Davidyants

Keyword(s):

Nitrate Reductase ◽

Winter Wheat ◽

Seed Treatment ◽

Nitrate Reductase Activity ◽

Growth Parameters ◽

Reductase Activity ◽

Dry Weight ◽

Potassium Nitrate ◽

Triterpene Glycosides ◽

Nr Activity

The effect of seed treatment with solutions of a purified amount of triterpene glycosides (PATG) containing, as major components, oleanolic acid glycosides – sylphiosides B, C, E, G, and extract (E) enriched with sylphiosides, from Silphium perfoliatum L. (Asteraceae) leaves on growth parameters and nitrate reductase activity (NR, EC 1.6.6.1) of 7-day winter wheat plants (Tritium aestivum L.) was studied. It was shown that, seed treatment with PATG solutions in concentrations of 0.0005 and 0.001% and E in concentrations of 0.2 and 0.4% caused an increase in the length of roots, shoots, wet and dry weight of seedlings compared to the control. The stimulating effect of these concentrations of PATG and E on the total nitrate reductase activity of the roots and leaves of seedlings has been established, and an increase in the stimulating effect of preparations on the activity NR оf against the background of substrate activation of the enzyme potassium nitrate (KNO3) was observed. The greatest increase in the total NR activity of roots and leaves of winter wheat plants was observed when PATG acted at a concentration of 0.001% and E – at a concentration of 0.4%, which amounted respectively 122 and 116%, when adding 1 ml of 50 mM KNO3 solution into the growing medium of plants – 141 and 137% relative to the control. The stimulating effect of exogenous triterpene glycosides on NR activity has been established for the first time. The obtained data allow to theoretically substantiate the possibility of practical use of triterpene glycosides and preparations based on them for the regulation of growth and nitrogen metabolism of plants.

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Nitrogen content, nitrate reductase activity, and biomass of kimpul (Xanthosoma sagittifolium) on shade and nitrogen fertilizer variation

Nusantara Bioscience ◽

10.13057/nusbiosci/n010203 ◽

2009 ◽

Vol 1 (2) ◽

Keyword(s):

Nitrate Reductase ◽

Nitrogen Content ◽

Nitrogen Fertilizer ◽

Nitrate Reductase Activity ◽

Reductase Activity ◽

Xanthosoma Sagittifolium

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EFFECT OF NITROGEN FERTILIZER APPLICATION RATE ON NITRATE REDUCTASE ACTIVITY IN MAIZE

Applied Ecology and Environmental Research ◽

10.15666/aeer/1802_28792894 ◽

2020 ◽

Vol 18 (2) ◽

pp. 2879-2894

Author(s):

H. CHEN ◽

L. HUANG

Keyword(s):

Nitrate Reductase ◽

Nitrogen Fertilizer ◽

Nitrate Reductase Activity ◽

Reductase Activity ◽

Fertilizer Application ◽

Application Rate ◽

Fertilizer Application Rate

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Changes in nitrate and nitrate reductase levels on restoration of molybdenum to molybdenum-deficient plants

Australian Journal of Agricultural Research ◽

10.1071/ar9690635 ◽

1969 ◽

Vol 20 (4) ◽

pp. 635 ◽

Cited By ~ 35

Author(s):

PJ Randall

Keyword(s):

Nitrate Reductase ◽

Nitrate Reductase Activity ◽

Dry Matter ◽

Reductase Activity ◽

Potassium Nitrate ◽

Response Patterns ◽

Wheat Leaf ◽

Plant Test ◽

Reducing Activity ◽

The Difference

The effect of molybdenum on nitrate reductase was assessed by incubating wheat leaf fragments with potassium nitrate, with or without molybdenum, under lights supplying 2000 f.c. Enzyme activity was then estimated by measuring the nitrite produced by the fragments and released into the solution during 1 hr in total darkness. Light stimulated the induction of nitrate-reducing activity while darkness was essential to obtain accumulation of nitrite. Molybdenum deficiency in wheat depressed nitrate reductase activity and dry matter yield. Molybdenum caused a rapid increase in nitrate reductase in tissue from deficient plants but had no such effect on tissue from non-deficient plants. The difference in response patterns between deficient and non-deficient plants, induced by molybdenum treatment could form the basis for a plant test for molybdenum deficiency.

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