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Silva LX, Figueiredo MVB, Silva GA, Goto BT, Oliveira JP, Burity HA Fungos micorrízicos arbusculares em áreas de plantio de leucena e sábia no Estado de Pernambuco. R. Árvore, 2007. 31:427-435.

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Article

Arbuscular Mycorrhizal Fungi Diversity in Selected Heavy metal Contaminated Soils in Owerri, Nigeria

1Restoration Ecology Research Group, Department of Environmental Technology, Federal University of Technology, Owerri

2Department of Biology, Federal University of Technology, Owerri, PMB 1526

3Department of Microbiology, Federal University of Technology


Journal of Applied & Environmental Microbiology. 2018, Vol. 6 No. 2, 30-36
DOI: 10.12691/jaem-6-2-1
Copyright © 2018 Science and Education Publishing

Cite this paper:
Chris O. Nwoko, Chinwe J. Ngumah, Chinedu E. Ihejirika, Chima Ngumah, Adaeze A. Ojiaku, Iheoma E Mbuka-Nwosu. Arbuscular Mycorrhizal Fungi Diversity in Selected Heavy metal Contaminated Soils in Owerri, Nigeria. Journal of Applied & Environmental Microbiology. 2018; 6(2):30-36. doi: 10.12691/jaem-6-2-1.

Correspondence to: Chris  O. Nwoko, Restoration Ecology Research Group, Department of Environmental Technology, Federal University of Technology, Owerri. Email: chris.nwoko@futo.edu.ng

Abstract

An investigation was carried out on the species diversity of Arbuscular mycorrhizal (AM) fungi in selected heavy metal contaminated soils within Owerri metropolis. Soils (0-20cm) were collected from 8 different locations viz (1) high auto mechanic activity area. (2) Medium auto mechanic activity area. (3) Low auto mechanic activity area. (4) Old dump site. (5) Active dump site. (6) Recovery dump site. (7) Heavy traffic highway. (8) Undisturbed vegetative land that served as control. Soil samples were analyzed for physicochemical parameters including heavy metal viz lead (Pb), Cadmium (Cd) and Zinc (Zn). Also the ecological characteristics of AM fungi species were determined. Results showed that areas with high pollution index (PI) adversely affected the richness and diversity of AM fungi species. Seven different AM fungi ecotypes were isolated from the soil samples. These ecotypes had varied relative abundance across the locations. Species richness and diversity as measured by Shannon-Wiener index decreased in soils with PI > 20 but increased with low PI < 20. However, these organisms maintained significant populations across the locations. Thus suggesting high possibility of facilitating microbial activity in heavy metal stressed soil ecosystems.

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