Practice question

Question

The following statements are made about the involvement of the type III protein secretion system (T3SS) during bacterial pathogenesis in plants and animals. A. It involves a protein complex that spans both the inner and outer bacterial membranes. B. T3SS mostly secretes Avr effector proteins directly into plant apoplast. C. The genes encoding conserved components of the T3SS of plant and animal pathogenic bacteria are referred to as Hrp (hypersensitive response and pathogenicity cluster). D. Once Avr effectors are delivered inside the plant cell, Hrp proteins are not needed for the activation of the defence response. Which one of the following options represents the combination of all correct statements?