Rao K P, Rains D W
Department of Agronomy and Range Science, University of California, Davis, California 95616.
Plant Physiol. 1976 Jan;57(1):55-8. doi: 10.1104/pp.57.1.55.
The absorption of NO(3) (-) by barley (Hordeum vulgare L.) was investigated by following the disappearance of NO(3) (-). The absorption was related to several parameters: NO(3) (-) and Ca(2+) concentrations, pH, and the presence of various anions. Absorption rate increased with increasing Ca(2+) concentration, reaching a maximum at approximately 5 mm Ca(2+), and was considerably inhibited by NH(4) (+). Absorption was influenced markedly by pH, and little or not at all by anions (Cl(-), Br(-), SO(4) (2-)), and was decreased by respiratory and oxidative phosphorylation inhibitors.
通过追踪硝酸根离子（NO₃⁻）的消失情况，对大麦（Hordeum vulgare L.）吸收NO₃⁻的过程进行了研究。该吸收过程与几个参数有关：NO₃⁻和钙离子（Ca²⁺）浓度、pH值以及各种阴离子的存在。吸收速率随着Ca²⁺浓度的增加而升高，在Ca²⁺浓度约为5 mM时达到最大值，并且受到铵离子（NH₄⁺）的显著抑制。吸收过程受到pH值的显著影响，而受阴离子（氯离子（Cl⁻）、溴离子（Br⁻）、硫酸根离子（SO₄²⁻））的影响很小或几乎没有影响，并且会被呼吸和氧化磷酸化抑制剂降低。
