Morphology of arbuscular mycorrhizas in <I>Tabebuia avellanedae</I> Lorentz ex Griseb. (Bignoniaceae)

Abstract

The knowledge about de morphology of arbuscular mycorrhizas is important since the physiological function of mycorrhizal structure and defense reactions of host can show differences between the Arum and Paris type morphology. Root seedlings of Tabebuia avellanedae, colonized both by native or inoculated (Glomus clarum and Glomus tunicatum) arbuscular mycorrhizal fungi showed both Arum and Paris type of morphology, characterizing an interrnediary type of morphology. This kind of morphology can bring ecological important since the hosts could take benefit of the advantages of each type of morphology.