The most thoroughly studied of the known bacteria-plant interactions is the
Correct answer: B. Gall formation on certain angiosperms by Agrobacterium
- A. Cyanobacterial symbiosis with some aquatic ferns
- B. Gall formation on certain angiosperms by Agrobacterium
- C. Nodulation of Sesbania stems by nitrogen-fixing bacteria
- D. Plant growth stimulation by phosphate solubilizing bacteria.
Explanation
Agrobacterium tumefaciens is the causative agent of crown gall, an important disease of many commercial crops. This disease has come to be recognized in recent years as being caused by a DNA plasmid (Ti plasmid) carried by a bacterium and transferred to the plant cells.
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