On the mechanism of nitrate uptake
โ Scribed by Nabila Bassioni; Erma Ikonomova
- Publisher
- Springer
- Year
- 1971
- Tongue
- English
- Weight
- 243 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0032-079X
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๐ SIMILAR VOLUMES
Roots of nitrate-starved and nitrate-pretreated seedlings of Hordeum vulgare were used to investigate the induction of a high-capacity uptake mechanism for nitrate. When exposed to 0.2 mmol. l-1KNO3, nitrate-starved roots took up nitrate at a rate of approx. 1 gmol. (g FW)-1. h-1 ; K + was absorbed
The pericarp of the dormant sugarbeet fruit acts as a storage reservoir for nitrate, ammonium and ฮฑ-amino-N. These N-reserves enable an autonomous development of the seedling for 8-10 d after imbibition. The nitrate content of the seed (1% of the whole fruit) probably induces nitrate-reductase activ