Blue-light-enhanced nitrate reductase activity in etiolated pea terminal buds

1974 ◽  
Vol 52 (6) ◽  
pp. 1433-1435 ◽  
Author(s):  
R. W. Jones ◽  
R. W. Sheard
Keyword(s):  
Nitrate Reductase ◽  
Blue Light ◽  
Nitrate Reductase Activity ◽  
Reductase Activity ◽  
High Energy ◽  
Light Requirement ◽  
High Energy Reaction ◽  
Terminal Buds ◽  
Energy Reaction

Under conditions in which the light requirement for phytochrome mediation was inferred to be above saturation, white and blue lights enhanced the extractable nitrate reductase activity of etiolated pea terminal buds above the levels engendered by red and far-red lights. The regulation of nitrate reductase by light in the terminal buds appears to involve both phytochrome and a blue-sensitive high-energy reaction.

EFFECTS OF BLUE LIGHT SUPPLEMENTATION TO RED LIGHT ON NITRATE REDUCTASE ACTIVITY IN LEAVES OF RICE SEEDLINGS

2006 ◽  
pp. 351-356 ◽  
Author(s):  
K.K. Ohashi ◽  
K. Goji ◽  
R. Matsuda ◽  
K. Fujiwara ◽  
K. Kurata
Keyword(s):  
Nitrate Reductase ◽  
Blue Light ◽  
Nitrate Reductase Activity ◽  
Reductase Activity ◽  
Red Light ◽  
Rice Seedlings

Nitrate reductase activity of dark-grown and light-exposed etiolated field peas (Pisum arvense)

1973 ◽  
Vol 51 (1) ◽  
pp. 27-35 ◽  
Author(s):  
R. W. Jones ◽  
R. W. Sheard
Keyword(s):  
Nitrate Reductase ◽  
White Light ◽  
Nitrate Reductase Activity ◽  
Nitrate Concentration ◽  
Reductase Activity ◽  
Protein Distribution ◽  
Pisum Arvense ◽  
Field Peas ◽  
Short Period ◽  
Terminal Buds

The nitrate reductase of etiolated field peas (Pisum arvense L. cv. Century) is described. Enzyme activity is maximally extracted into a cysteine-free solution. Absolute enzyme activities, in dark-grown plants and in plants exposed for a short period to 600 μW∙cm−2 of white light, and the extent of induction by light, were high in the terminal buds and declined rapidly in the basal direction along the shoot. Soluble protein distribution followed nitrate reductase activity in opposite direction to the acropetal decrease in nitrate concentration. Nitrate reductase in dark-grown terminal buds showed adaptation to the supply of nutrient nitrate concentration, and 2 h of white light also elicited an enzyme response that depended on nitrate. The effect of light is demonstrated to be largely independent of photosynthetic light utilization since 5 min of white light, followed by 115 min of darkness, led to activity increases that were about 80% of increases after 2 h of white light. Enzymologically, the nitrate reductase of dark-grown terminal buds appeared to be identical with the light-induced enzyme and also with the enzyme of green plant tissues as characterized in the literature.

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

Nitrate Reductase Activity in Heat (Drought) Tolerant and Intolerant Maize Genotypes 1

Crop Science ◽  
1976 ◽  
Vol 16 (6) ◽  
pp. 775-779 ◽  
Author(s):  
U. R. Pal ◽  
R. R. Johnson ◽  
R. H. Hageman
Keyword(s):  
Nitrate Reductase ◽  
Nitrate Reductase Activity ◽  
Reductase Activity ◽  
Drought Tolerant ◽  
Maize Genotypes

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

Nitrate‐Reductase Activity and Grain Yield of Maize Cultivar Hybrids 1

Crop Science ◽  
1978 ◽  
Vol 18 (4) ◽  
pp. 680-682 ◽  
Author(s):  
M. A. B. Fakorede ◽  
J. J. Mock
Keyword(s):  
Nitrate Reductase ◽  
Grain Yield ◽  
Nitrate Reductase Activity ◽  
Reductase Activity ◽  
Maize Cultivar
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