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Influence of Azospirillum Strains on the Nodulation of Clovers by Rhizobium Strains
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...
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| Main Authors: | , |
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| Formato: | Artigo |
| Idioma: | en |
| Publicado em: |
1985
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| Assuntos: | |
| Acesso em linha: | https://ncbi.nlm.nih.gov/pmc/articles/PMC238482/ https://ncbi.nlm.nih.gov/pubmed/16346772 |
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| Resumo: | 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(+) Fix(+)R. trifolii strains was observed when an Azospirillum strain caused an increase in nodule number. |
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