Biodiversity of arbuscular mycorrhizal fungi in different trees of madhupur forest, Bangladesh

Abstract

Roots and rhizosphere soils of Acacia auriculiformis A. Cunn. ex Benth., A. mangium Wild., Artocarpus heterophyllus Lamk. C., Dalbergia sissoo Roxb. ex A. P. D., Eucalyptus camaldulensis Dehnn., Hevea brasiliensis (Wild. ex Juss) Muell. Arg., Swietenia macrophylla King. and Tectona grandis L. were collected from different locations of Madhupur forest area to study the biodiversity of Arbuscular Mycorrhizal (AM) fungal colonization and spore population. All the plants showed AM colonization. Out of eight selected plants, mycelial colonization was lowest in the roots of A. heterophyllus (22%) and the highest was in the roots of H. brasiliensis (78%). Mycelial intensity was observed poor (25%–77%) and moderate (23%–57%) in all plants species and abundant (11%–40%) was in most of the plant species. Vesicular colonization was observed in five plant species. The lowest was recorded in E. camaldulensis (4%) and the highest was in H. brasiliensis (21%). Poor (24%–56%), moderate (16%–100%) and abundant (11%–40%) type of vesicular intensity were observed. Arbuscular colonization was observed in three plants. The highest was in A. mangium (72%) and the lowest was in S. macrophylla (17%). Arbuscular intensity was recorded as poor (12%–44%), moderate (22%–100%) and abundant (4%–47%). The highest AM fungal spore population was in A. auriculiformis (714) and the lowest was in D. sissoo (102). Five AM fungal genera were recorded. Glomus was found to be dominant. A few spores remained unidentified. Significant correlation was observed between percent colonization and spore population. The results of the present study indicate the occurrence of AM fungi and the mycotrophism of the plants of Madhupur forest area and the applicability of AM technology in the forest management of Madhupur forest.

Keywords

Biodiversity / Arbuscular Mycorrhizal fungi / Fungal colonization / Rhizosphere soils / Tree species

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