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The Cytology and Life-cycle of Azotobacter chroococcum

机译：偶氮杆菌的细胞学和生命周期

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SUMMARY: Azotobacter chroococcum exists in two cytologically distinct vegetative forms. In one the appearance is that of a typical bacterial resting cell, with a large vesicular nucleus. In the other the cytoplasm appears homogeneously vacuolated and refractive; this is correlated with a high lipid content. Gonidia of two types are produced from the nucleated cells. The more common are tiny bacilli with polar flagella; these are released from the lumen of the mother cell and reproduce by fission. Larger gonidia, resembling miniature vegetative cells, develop within the mother cell, which becomes greatly elongated. These large gonidia do not appear to divide but grow directly into vegetative cells. Mother cells of both kinds may be Grainpositive.
机译：发明内容：偶氮杆菌以两种细胞学上不同的植物形式存在。在一个外观是典型的细菌静息细胞，具有大的凹凸细胞核。另外，细胞质出现均匀真空且折射;这与高脂质含量相关。两种类型的牙龈由核细胞产生。较常见的是极性鞭毛的微小杆菌;这些从母细胞的内腔释放并通过裂变繁殖。较大的牙釉质，类似于微型营养细胞，在母细胞内产生，这变得大大伸长。这些大型牙龈似乎不会分裂，但直接生长到植物细胞中。两种母细胞可能是晶体叠数。

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