Abstract
Regression analysis of results from a mathematical competition model showed that rhizobitoxine production by Bradyrhizobium elkanii USDA94 gave this strain a nodulation competitiveness about 10 times greater than that of a non-rhizobitoxine-producing mutant strain on Macroptilium atropurpureum (Siratro). Rhizobitoxine enhancement of competitive nodulation occurred at a late stage in the time-course of nodulation. All other known rhizobial factors that affect nodulation competitiveness act in the rhizosphere and during the initial interaction with legumes. This unique late action of rhizobitoxine could prove advantageous in inoculant production, because inoculum often fails to nodulate in the latter stages of nodulation kinetics.
| Original language | English |
|---|---|
| Pages (from-to) | 155-160 |
| Number of pages | 6 |
| Journal | FEMS Microbiology Ecology |
| Volume | 45 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2003 Jul 25 |
Keywords
- Bradyrhizobium elkanii
- Competitiveness
- Macroptilium atropurpureum
- Nodulation
- Rhizobitoxine