Which pathogen causes stem gall disease in coriander?

Correct option is C

Correct option (c) Protomyces macrosporus
· Causes stem gall disease of coriander.
· Produces tumor-like swellings on stems and petioles.
· Belongs to Ascomycetes.
Other options:
· (a) Agrobacterium radiobacter – Non-pathogenic.
· (b) Anguina tritici – Ear cockle of wheat.
· (d) Agrobacterium tumefaciens – Crown gall.