Mixture of endophytic Agrobacterium and Sinorhizobium meliloti strains could induce nonspecific nodulation on some woody legumes

• Published in: Archives of microbiology Vol. 192; no. 3; pp. 229 - 234
• Main Authors: Liu, Jie, Wang, En Tao, Ren, Da Wei, Chen, Wen Xin
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Berlin/Heidelberg : Springer-Verlag 01.03.2010; Springer-Verlag; Springer; Springer Nature B.V
• Subjects: Agronomy. Soil science and plant productions; Bacteria; Bacterial Proteins - genetics; Bacterial Proteins - physiology; Bacteriology; Biochemistry; Biological and medical sciences; Biomedical and Life Sciences; Biotechnology; Cell Biology; Ecology; Economic plant physiology; Fabaceae - microbiology; Fundamental and applied biological sciences. Psychology; Legumes; Life Sciences; Microbial Ecology; Microbiology; Miscellaneous; Plant Root Nodulation - genetics; Plant Root Nodulation - physiology; Polymerase Chain Reaction; Rhizobium - genetics; Rhizobium - growth & development; Seeds; Short Communication; Sinorhizobium meliloti - genetics; Sinorhizobium meliloti - growth & development; Symbiosis; Symbiosis (nodules, symbiotic nitrogen fixation, mycorrhiza...); Symbiosis - genetics; Symbiosis - physiology; Nodulation; Endophyte; Woody legume; Nodule morphology; Sinorhizobium; Symbiont; Strain; Agrobacterium; Morphology; Bacteria; Rhizobiaceae; Sinorhizobium meliloti; Gram negative bacteria
• ISSN: 0302-8933; 1432-072X
• DOI: 10.1007/s00203-010-0543-2

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.