Polymyxa graminis

Polymyxa graminis
Scientific classification
(unranked):	SAR
(unranked):	Rhizaria
Phylum:	Cercozoa
Class:	Plasmodiophorea
Order:	Plasmodiophorida
Family:	Plasmodiophoridae
Genus:	Polymyxa
Species:	P. graminis
Binomial name
Polymyxa graminis

Polymyxa graminis is a species of plasmodiophorid cercozoans. It is an obligate parasite of plant roots and, though itself non-pathogenic, is responsible for the transmission of several very important plant viruses, including barley yellow mosaic virus (BaYMV) and soil-borne wheat mosaic virus (SBWMV).

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Wikipedia