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Occurrence of mycoplasma-like bodies in phloem cells of beech trees affected by « bark necrosis »
Annales des Sciences Forestieres
There is no unanimous agreement as to the primary causative agent(s) of the beech bark necrosis, as it is known in Europe. Various workers favour fungi, bacteria, scale insects, physiological factors like temperature, soil-water, etc. (cf. Perrin, 1977). During our studies on the fine structural aspects of bark and wood of diseased trees, observations were made on the occurrence of MLO in phloem cells. MLO bodies have been discovered in several trees infected with various diseases, e. g. pinedoi:10.1051/forest:19800413 fatcat:rekea4433bdx5bw4xaexsctlkm