Diversity and association of mycorrhizae arbuscular fungi (AMF) in landslide-impacted area
Retno Prayudyaningsih (a*), Nursyamsi (a), C.Andriyani Prasetyawati (a), Heri Suryanto (a)

a) Environment and Forestry Research and Development Institute of Makassar
Jalan Perintis Kemerdekaan km. 16, 5 Makassar 90243, Indonesia
*rprayudyaningsih[at]gmail.com

Abstract

The lack of nutrient content, organic matter, infiltration capacity, water holding capacity, and the increasing of soil density are characteristics of landslide-impacted area. Utilization of potential soil microbes such as indigenous Arbuscular Mycorrhizal Fungi (AMF) should be used to rehabilitate the area. Therefore, diversity of AMF and its association with plant roots that colonize the land should be determined. The research location was in landslide-impacted area of Mount Bawakaraeng, South Sulawesi, Indonesia. Soils and plant root samplings were carried out in 2 types of area, namely (1) upstream (Lengkese village) and (2) downstream (Spoilbank Parangloe). The results found 15 morphotypes of AMF spores including genus Acaulospora, Gigaspora, Scutellospora and Glomus. The spore density of AMF was very low (1 - 13 per 100 g of soil). Most of pioneer plant that invaded the area were associated with AMF, indicated by infection rates of 19, 44 - 95, 48%. The low density of spores proves that the impact of landslides has resulted in decreased soil biological properties. Meanwhile, the AMF colonization in pioneer roots indicated the association of mycorrhizal fungi needed to help plant survival and improve the soil properties. Furthermore, landslide-impacted area can be restored and used as agriculture area

Keywords: diversity, mycorrhizae, colonization, landslide, rehabilitation

Topic: Biodiversity and Climate Change