Mycoplasmalike organisms inVaccinium myrtillus L. infected with blueberry witches broom

We confirm Kegler’s et al. (1973) finding of MLO in blueberries diseased with witches broom described by Blattný and Starý (1940) as a virus disease. MLO, 150–700 nm in diameter were found sporadically in the etiolated underground parts of the shoots and in the roots, especially in sieve tubes and floem-parenchyma.