Several nematodes act as vectors for transmission of fungi, bacteria and viruses.
- The bacterium which causes yellow ear rot of wheat (Corynebacterium tritici or Clavibacter tritici) is disseminated by ear cockle nematode, Anguina tritici.
Fig: Yellow ear rot of wheat
Fig: Anguina tritici
- If these two diseases appear together, a complex disease called tundu of wheat occurs.
Fig: Ear Cockle Disease Of Wheat
- Corynebacterium tritici is not capable of dispersal and infection unless it is carried by Anguina tritici.
Similarly, root rot and wilt pathogens such as Phytophthora, Fusarium, Rhizoctonia, Verticillium, etc., are disseminated by nematodes.
- Many soil borne viruses are known to be transmitted by the nematodes.
- Xiphenema, Longidorous, Trichodorus and Paratrichodorus are the nematode genera belonging to Dorylaimoidea which are known to transmit plant viruses.