Exploration of indigenous arbuscular mycorrhizal fungi on Arenga pinnata Merr in post-mining land

Mining activities have a positive impact that can generate income for the state, but also cause negative impacts in form of soil damage, vegetation and animal losses to disrupt ecosystems. Therefore, it is necessary carry out reclamation with revegetation using local plant species. PT Berau Coal has conducted sugar palm (Arenga pinnata). The success growth post-mining land influenced by several factors, one symbiosis arbuscula mycorrhizal fungi (AMF) planted Coal. purpose this study was determine diversity indigenous spores arenga rhizosphere root colonization plants. Identification AMF carried observing taken from depth 0-20 cm 20-40 cm. Isolation wet pouring technique method centrifuges were identified INVAM methods. observation on roots through staining Clapp modification method. results showed found 3 genera at site, namely genus Glomus (15 sp), Acaulospora (3 Gigaspora (1 sp). highest spore abundance sp structures colonizing plants are hyphae, vesicles, spores.