Question

The most thoroughly studied of the known bacteria-plant interactions is the :-

• A. Gall formation on certain angiosperms by Agrobacterium
• B. Nodulation of Sesbania stems by nitrogen fixing bacteria
• C. Plant growth stimulation by phosphate solubilising bacteria
• D. Cyanobacterial symbiosis with some aquatic ferns

Answer 1

The correct option is A Gall formation on certain angiosperms by Agrobacterium

Agrobacterium tumefaciens is called a natural plant genetic engineer. Using Agrobacterium vector, nematode specific genes were introduced into the host plant. The introduction was as such that it produced both sense and anti-sense RNA in the host cells. These two RNA's being complementary to each other formed a double-stranded (ds-RNA) that initiated RNAi and thus, silenced the specific mRNA of the nematode. The Agrobacterium is most widely studied of the known bacteria-plant interactions.

So the correct answer is 'Option A'.