Journal
ARCHIVES OF MICROBIOLOGY
Volume 192, Issue 3, Pages 229-234Publisher
SPRINGER
DOI: 10.1007/s00203-010-0543-2
Keywords
Nodulation; Agrobacterium; Sinorhizobium; Endophyte; Woody legume; Nodule morphology
Categories
Funding
- Foundation of National Basic Research Program of China [2006CB100206]
- Specialized Research Fund for the Doctoral Program of Higher Education [20050019017]
- IPN, Mexico [SIP 20080322, SIP 20090179]
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Agrobacterium sp. II CCBAU 21244 isolated from root nodules of Wisteria sinensis was verified as an endophytic bacterium by inoculation and reisolation tests. However, inoculation with a mixture of this strain and a Sinorhizobium meliloti strain could induce root nodules on W. sinensis and two other woody legumes, which do not form a symbiosis with S. meliloti alone. Rod-shaped and irregular nodules were found on the inoculated plants, in which the S. meliloti strain was detected in all of the nodules; while the Agrobacterium strain was inside of the rod-shaped nodules, or occupied only the nodule surface of the irregular globe-shaped nodules. These findings revealed novel interactions among the symbiotic bacteria, endophytic bacteria and the legume plants, although the mechanisms are still unknown.
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