Tubular Structures Associated with Maize Rough Dwarf Virus Particles in Crude Extracts: Electron Microscopy Study

Abstract

Tubular structures enclosing single rows of virus particles have been repeatedly found associated with infection by maize rough dwarf virus (MRDV). They have been seen in ultrathin sections of leaves from both infected maize (Gerola & Bassi, 1966) and wheat plants (Gerola et al. 1966) and also sections of some tissues from viruliferous planthoppers Laodelphax striatellus Fallén (Vidano, 1966). During further work on MRDV, still in progress in our laboratory, we have recently noticed that such tubular structures can survive in crude extracts of diseased plants and often they still contain the row of virus particles.