Genetics Department, Research School of Biological Sciences, Australian National University, Canberra City, 2601, Australia.
Appl Environ Microbiol. 1985 Apr;49(4):984-9. doi: 10.1128/aem.49.4.984-989.1985.
Mixed cultures of several Azospirillum and Rhizobium trifolii strains caused either an inhibition or stimulation of nodule formation on plant hosts as compared with nodulation of plants inoculated with R. trifolii alone. Azospirillum strains affected the nodulation process at a precise cell ratio (R. trifolii/Azospirillum cells) and time of inoculation. All Azospirillum strains used showed a variation in their ability to inhibit or enhance nodulation by R. trifolii strains. When nonviable cell preparations of Azospirillum strains were used for mixing experiments, no effect on nodulation was observed. A decrease in the effectiveness of normally Nod FixR. trifolii strains was observed when an Azospirillum strain caused an increase in nodule number.
与单独接种三叶草根瘤菌的植物相比，几种固氮螺菌和三叶草根瘤菌混合培养物会抑制或刺激植物宿主的结瘤形成。固氮螺菌菌株以精确的细胞比例（三叶草根瘤菌/固氮螺菌细胞）和接种时间影响结瘤过程。所有使用的固氮螺菌菌株在抑制或增强三叶草根瘤菌菌株结瘤的能力上表现出差异。当使用固氮螺菌菌株的非存活细胞制剂进行混合实验时，观察到对结瘤没有影响。当固氮螺菌菌株引起结瘤数量增加时，通常有效的根瘤菌菌株的效果会降低。
