Quiñones Miguel A, Aparicio Pedro J
Centro de Investigaciones Biológicas, CSIC, Velázquez 144, 28006 Madrid, Spain.
Photochem Photobiol. 1990 Jun;51(6):689-692. doi: 10.1111/php.1990.51.6.689.
The light-dependent utilization of nitrate by the green alga Monoraphidium braunii, coming from nocturnal dark periods, shows an action spectrum of flavin type with two main bands: one in the blue, peaking at 450 and 480 nm, and the other in the near-UV region with a maximum at 365 nm. Other results indicate that cells growing on nitrate as the only nitrogen source resynthesize nitrate reductase daily, which implies the nocturnal loss of this enzyme. The biosynthesis of nitrate reductase at the beginning of the light periods can proceed under red light. In addition, blue or near-UV light is required for the activation of the previously formed nitrate reductase.
来自夜间黑暗期的绿藻布朗单歧藻对硝酸盐的光依赖利用呈现出黄素类型的作用光谱，有两个主要波段：一个在蓝光区，峰值在450和480纳米，另一个在近紫外区，最大值在365纳米。其他结果表明，以硝酸盐作为唯一氮源生长的细胞每天会重新合成硝酸还原酶，这意味着该酶在夜间会损失。在光照期开始时，硝酸还原酶的生物合成可以在红光下进行。此外，激活先前形成的硝酸还原酶需要蓝光或近紫外光。
