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| Effects of Polycyclic Aromatic Hydrocarbons on Biological Characteristics of Arbuscular Mycorrhizal Fungi |
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| KeyWord:polycyclic aromatic hydrocarbons（PAHs）; arbuscular mycorrhizal fungi（AMF）; hyphae; soil |
| Author Name | Affiliation | | ZONG Jiong | Institute of Organic Contaminant Control and Soil Remediation, Nanjing Agricultural University, Nanjing 210095, China | | ZHU Xue-zhu | Institute of Organic Contaminant Control and Soil Remediation, Nanjing Agricultural University, Nanjing 210095, China | | LING Wan-ting | Institute of Organic Contaminant Control and Soil Remediation, Nanjing Agricultural University, Nanjing 210095, China | | QUE Hong | Institute of Organic Contaminant Control and Soil Remediation, Nanjing Agricultural University, Nanjing 210095, China |
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| Abstract: |
| The effects of polycyclic aromatic hydrocarbons（PAHs） on mycorrhizal colonization rate, arbuscule rate, mycorrhizal root length, hyphal density, vesicule and spore numbers of arbuscular mycorrhizal fungi（AMF）, were investigated in a pot experiment. Phenanthrene and pyrene were selected to represent PAHs. AMF were Glomus etunicatum（Ge）, Glomus mosseae（Gm）, and Glomus lamellosum（Gla）. At 41.87 and 42.80 mg·kg-1 of phenanthrene and pyrene concentrations in soil, respectively, all examined parameters of AMF increased with incubation time during 35~65 d after inoculation. However, the mycorrhizal colonization rate, arbuscule rate, and mycorrhizal root length of AMF decreased 65~75 d after inoculation, due to death and degradation of arbuscules. The mycorrhizal colonization rate, arbuscule rate, and mycorrhizal root length of AMF decreased with increasing PAHs concentrations in soils. The hyphal density and spore production of AMF reduced at high PAHs concentrations, whereas promoted at low concentrations. The vesicule number of AMF changed little under the stress of PAHs at the tested concentrations. |
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