The nra was not directly correlated with nitrogenase activity .

硝酸还原酶活性和根瘤固氮活性之间没有直接关系。

Soil drought reduced moisture content and nitrogenase activity of nodules .

土壤干旱降低田菁根瘤的含水量和固氮活性。

Effects of molybdenum on nitrogenase activity of nitrogen-fixing bacteria in sugarcane .

钼对甘蔗体内固氮菌的固氮酶活性的影响。

Table 2 growth and nitrogenase activity of transformation colonies in a medium without .

表2转化藻落在羌氮培养基及空气中的生长和固氮蔺活力。

Because no photosynthesis is taking place , the bacterium uses up its cellular oxygen so that the nitrogenase enzyme is effectively in a largely oxygen-free environment .

由于没有发生光合作用，蓝杆菌使用的是细胞中的氧气，固氮酶实际上在很大程度上是处于无氧环境的。