Plant Tissue Culture · Botany

In 'Hairy Root Culture', which bacterium is used to infect the plant tissue?

  1. Agrobacterium tumefaciens
  2. Bacillus thuringiensis
  3. Rhizobium leguminosarum
  4. Agrobacterium rhizogenes
Show answer and explanation

Correct answer: Agrobacterium rhizogenes

Agrobacterium rhizogenes contains the Ri (root-inducing) plasmid. Infection causes the formation of neoplastic 'hairy' roots that grow rapidly and are stable sources of secondary metabolites.

Difficulty: Medium Question 15 of 20

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