Select the nematode(s) which act as vectors of plant viruses

Xiphinema index, Longidorus, and Trichodorus are the nematodes that act as vectors of plant viruses.
The only known nematode vectors are in the genera Xiphinema and Longidorus. Tobraviruses are straight tubular particles with two size ranges, 180 - 210 nm and 45 - 115 nm. Trichodorus and Paratrichodorus are vectors.
Nematodes acquire viruses by feeding on infected plants and transmitting them during subsequent feeding on non-infected plants.