Mycorrhizal fungi from mine sites and rehabilitation of marginal and mine sites in Surigao, Philippines
Issue Date
1-2013
Abstract
Most mining companies are unsuccessful in the rehabilitation of their mine tailing areas due to the unfavorable environmental conditions particularly the elevated concentrations of metals. Copper and nickel are the top metals being mined in the Philippines. This study was conducted to assess the mycorrhizal diversity in two mine sites in Surigao del Norte, Philippines, to compare the plant growth promoting effect of locally developed mycorrhizal inoculants with the mycorrhizal fungi native in the mine sites, and to select the best mycorrhizal fungi-reforestation tree species combination for the rehabilitation of marginal and Cu and Ni mine sites in Surigao. Seedlings of mangium (Acacia mangium), falcata (Paraserianthes falcataria) and mangkono (Xanthostemon verdugonianus) were inoculated with a mix spores of arbuscular mycorrhizal (AM) fungi native in the mine sites or commercially available mycorrhizal inoculants with brand name Mykovam and Mycogroe and grown in marginal or mine waste soils. Mykovam is a soil-based biofertilizer consisting of AM fungi: Gigaspora margarita, Glomus macrocarpum, G. etunicatum, G. fasciculatum and other unidentified Glomus species. Mycogroe, on the other hand, consists of spores of ectomycorrhizal (ECM) fungi Scleroderma and Pisolithus. Height and diameter were measured periodically and biomass production, mycorrhizal root colonization and heavy metal accumulation were assessed at harvest. The native ECM fungi observed in plants growing in the mine sites were Scleroderma and Thelepora while AM fungi were species under the genera: Glomus, Gigaspora, Acaulospora and Entrophospora. After three months in the nursery, mycorrhiza infected roots were higher in marginal than in mine soil. Mycorrhizal plants grew better in marginal than in mine soil. Mycorrhiza inoculated plants outperformed the uninoculated counterpart. The native mycorrhizal fungi promoted the best growth of mangium and mangkono. On the other hand, inoculation did not promote growth of falcata seedlings. Mycorrhizal plants contained higher P than the uninoculated counterpart. The highest Cu concentration was observed in mangium, inoculated with the native mycorrhizal fungi. In Cu and Ni mine tailing sites, mangium inoculated with the native promoted higher seedling survival and improved plant growth comparable with the commercial mycorrhizal inoculants. In conclusion, mangium inoculated with the native mycorrhizal fungi can be planted to rehabilitate marginal and mine sites in Surigao and perhaps in other mine tailing sites in the Philippines with high Cu and Ni deposits. © 2013 by Nova Science Publishers, Inc. All rights reserved.
Source or Periodical Title
From Seed Germination to Young Plants: Ecology, Growth and Environmental Influences
Page
343-356
Document Type
Article
Language
English
Subject
Arbuscular mycorrhizal fungi, Copper, Ectomycorrhizal fungi, Heavy metals
Recommended Citation
Aggangan, N.S., Edradan, M.R.R., Alvarado, G.B., Macana, P.P.C., Noel, L.K.S. & Edradan, D.R.R. (2013). Mycorrhizal fungi from mine sites and rehabilitation of marginal and mine sites in Surigao, Philippines. From Seed Germination to Young Plants: Ecology, Growth and Environmental Influences, 343-356.
Digital Copy
yes
