01231naa a2200217 a 450000100080000000500110000800800410001910000270006024500730008726000090016052006790016965000100084865000140085865300110087265300180088365300150090170000160091670000180093270000190095077300440096914576771992-07-08       1981    bl ---       0--  u    #d1 aGIANINAZZI-PEARSON, V.  aUltrastructural and ultracytochemical of a Glomus tenuis mycorrhiza.  c1981  aThe structural organization and some cytochemical features (protein and polysaccharide distribution) of the mycorrhiza formed by Glomus tenuis in raspberry roots have been investigated. Certain aspects of the fine mycorrhizal endophyte (smaller hyphae, thinner walls distinct two-layered wall structure following the PATAg test for polysaccharides, complete absence of septa) distinguish it from the coarse vesicular-arbuscular mycorrhizal fungi. The modifications occurring in the host-fungus interface during Glomus tenuis mycorrhiza development are however very similar to those have been described in several mycorrhizae formed by coarse vesicular-arbuscular endophytes.  aFungo  aMicorriza  aFungus  aGlomus tenuis  aMycorrhiza1 aMORANDI, D.1 aDEXHEIMER, J.1 aGIANINAZZI, S.  tNew Phytologystgv.88, p.633-639, 1981.