Biodiversity and colonization of arbuscular mycorrhizal fungi with some species of zagros forest

This study was conducted to recognize diversity of arbuscular mycorrhizal fungi )AMF) with some tree and shrub species of sites in Ilam province. For this purpose, four soil and root samples were colected from the depth of 0-30 cm in the rhizosphere of Cercis griffithii, Cerasus microcarpa, Amygdalus alaeagnifolia, Daphne mucronata, Lonicera nummularifolia, Crataegus pontica, Acer monspessulanum and Amygdalus arabica for soil analysis and AMF spore extraction. In total, 42 species of mycorrhizal fungi belonged to 13 genera were identified. The root colonization percentage varied from 34.97% in A. alaeagnifolia, to 99.90% in A. arabica. Also,spore density ranged soil from eight in A. arabica to 33 g -1 in C. pontica. Mycorrhizal fungi biodiversity indices showed no significant difference for richness in studied plant species. While Shannon-Weiner index of diversity (Hʹ), Simpson index of diversity and evenness were significantly different among studied tree species. The highest Shannon-Weiner index of diversity (Hʹ) values belonged to the L. nummularifolia and A. arabica respectively. Furetheremore, the highest Pailo evenness index value belonged to the A. monspessulanum and L. nummularifolia. AMF Simpson index of diversity for L. nummularifolia, A. monspessulanum, C. microcarpa, C. griffithii, A. alaeagnifolia and A. arabica were classified in one group. The high valued of AMF diversity could reperesnt a high level of soil diversity in the current studied sites. The higher level of AMF diversity in L. nummularifolia, A. monspessulanum and A. arabica rizhosphere can be explaned by the more soil nutrient element and productivity of mentioned species.