Nitrate Reductase Activity in Maize (Zea mays L.) Leaves
Open Access
- 1 October 1976
- journal article
- research article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 58 (4) , 505-509
- https://doi.org/10.1104/pp.58.4.505
Abstract
Experiments were conducted to determine whether the nitrate flux to the leaves or the nitrate content of the leaves regulated the nitrate reductase activity (NRA) in leaves of intact maize (Zea mays L.) seedlings having low water potentials (ψw) when other environmental and endogenous factors were constant. In seedlings that were desiccated slowly, the nitrate flux, leaf nitrate content, and NRA decreased as ψw decreased. The decrease in nitrate flux was caused by a decrease in both the rate of transpiration and the rate of nitrate delivery to the transpiration stream. Upon rewatering, the recovery in NRA was correlated with the nitrate flux but not the leaf nitrate content.This publication has 9 references indexed in Scilit:
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