Kennedya Yellow Mosaic Virus: Another Tymovirus

Abstract

A virus has been isolated from an Australian native legume, Kennedya rubicunda. The virus, which we call Kennedya yellow mosaic virus (KYMV), is sap-transmissible to a limited number of other plant species. Purified preparations of KYMV particles contain two types of rounded isometric particles 28 nm in diameter. Particles of one type are infectious nucleoprotein with a sedimentation coefficient of 110 S and particles of the other type are non-infections protein shells with a sedimentation coefficient of 54 S. Nucleoprotein particles of KYMV contain 34 % single-stranded ribonucleic acid with a molar base content of guanine 15 %, adenine 22 %, cytosine 37 %, and uracil 25 %. The present cryptogram of KYMV is Ril : */34 : SIS: S/*.