Interactions between arbuscular mycorrhizal fungi and fungivorous nematodes on the growth and arsenic uptake of tobacco in arsenic-contaminated soils |
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| Institution: | 1. Institute of Botany, Jiangsu Province and The Chinese Academy of Sciences, Nanjing 210014, China;2. State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;3. Waste Electrical and Electronic Equipment Recycling Centre, Shanghai Second Polytechnic University, Shanghai 201209, China;4. Qianxinan Tobacco Company, Guizhou 562400, China;1. IRD, UMR LSTM, 34398 Montpellier, France;2. Laboratoire Commun de Microbiologie IRD/ISRA/UCAD, Dakar, Senegal;1. Department of Plant and Environmental Protection Sciences, University of Hawaii, 3050 Maile Way, Room 310, Honolulu, HI 96822, USA;2. USDA, Agricultural Research Service, Daniel K. Inouye U.S. Pacific Basin Agricultural Research Center, 64 Nowelo Street, Hilo, HI 96720, USA;3. Laboratory of Experimental Therapeutics, Peggy and Charles Stephenson Cancer Center, Department of Pathology, University of Oklahoma Health Sciences Center, BRC # 1405, 975 N.E., 10th Street, Oklahoma City, OK 73104, USA;1. Department of Terrestrial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), PO Box 50, 6700 AB Wageningen, The Netherlands;2. Laboratory of Nematology, Wageningen University and Research Centre, PO Box 8123, 6700 ES Wageningen, The Netherlands;1. Faculty of Life Sciences, The University of Manchester, Oxford Road, Manchester M13 9PT, United Kingdom;2. School of Biological Sciences and Institute for Global Food Security, Queen’s University of Belfast, 97 Lisburn Road, Belfast BT9 7BL, Northern Ireland, United Kingdom |
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| Abstract: | The effects of inoculation with two AM fungi (M1, Glomus caledonium; M2, Glomus spp. and Acaulospora spp.) and a fungivorous nematode Aphelenchoides sp. on growth and arsenic (As) uptake of Nicotiana tabacum L. were investigated in soils contaminated with a range of As. The reproduction of Aphelenchoides sp. was triggered by the co-inoculation of AM fungi regardless of AM fungal isolates and As levels. Stimulative effects of Aphelenchoides sp. on the development of mycorrhiza, slightly different between two AM fungi, were found particularly at the lowest As level. Irrespective of mycorrhizal inoculi, increasing soil As level decreased plant growth, but increased plant As uptake. Co-inoculation of AM fungi and Aphelenchoides sp. led plants to achieving further growth and greater As accumulation at the lowest As level. Results showed that the interactions between AM fungi and fungivorous nematodes were important in plant As tolerance and phytoextraction at low level As-polluted soil. |
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| Keywords: | Mycorrhiza Fungivorous nematodes Fungus–nematode interactions Arsenic contamination Phytoextraction |
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