The activation state of nitrate reductase is not always correlated with total nitrate reductase activity in leaves
β Scribed by Hui-Min Man; Gaber Khallaf Abd-El Baki; Petra Stegmann; Hendrik Weiner; Werner M. Kaiser
- Book ID
- 106115063
- Publisher
- Springer-Verlag
- Year
- 1999
- Tongue
- English
- Weight
- 171 KB
- Volume
- 209
- Category
- Article
- ISSN
- 0032-0935
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Latent nitrate reductase activity (NRA) was detected in corn (Zea mays L., Golden Jubilee) root microsome fractions. Microsome-associated NRA was stimulated up to 20-fold by Triton X-100 (octylphenoxy polyethoxyethanol) whereas soluble NRA was only increased up to 1.2-fold. Microsome-associated NRA
Nitrate reductase (NR, NADH:nitrate oxidoreductase, EC 1.6.6.1) from barley (Hordeum vulgate L. cv. Hassan) leaves was inactivated during a light-dark transition, losing approx. 50% of activity after 30 min of darkness. The dark inactivation was reversed by illumination of the seedlings, the kinetic