Nitrate reductase and glutamine synthetase activity in leaves and roots of nitrate-fedHelianthus annuus L.

@article{Kaiser2005NitrateRA,
  title={Nitrate reductase and glutamine synthetase activity in leaves and roots of nitrate-fedHelianthus annuus L.},
  author={James J Kaiser and Orion A. Lewis},
  journal={Plant and Soil},
  year={2005},
  volume={77},
  pages={127-130}
}
It has been reported that in plants of nitrate-fedH. annuus, nitrate reductase activity (NRA) is restricted to the roots of the plant. With an improved extraction technique using a medium containing 2% casein and 1.5 g insoluble polyvinylpyrrolidone (PVP) per gram material, however, the leaves ofH. annuus showed a far greaterin vitro NRA (24.7±0.4 μmoles h−1 g fr.wt.−1) than did the roots (3.4±0.6 μmoles h−1 g fr.wt.−1).In vitro glutamine synthetase activity (GSA) was found to be greater in the… CONTINUE READING
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Sand and Water Culture Methods used in the Study of Plant Nutrition

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