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Growth and arsenic uptake by Chinese brake fern inoculated with an arbuscular mycorrhizal fungus
Authors:Yu Liu  Peter Christie  Junling Zhang  Xiaolin Li  
Institution:1. Key Laboratory of Plant Nutrition, Ministry of Agriculture, China Agricultural University, Beijing 100094, China;2. Key Laboratory of Plant-Soil Interactions, Ministry of Education, China Agricultural University, Beijing 100094, China;3. Department of Plant Nutrition, College of Agricultural Resources and Environmental Sciences, China Agricultural University, Beijing 100094, China;4. Agricultural and Environmental Science Department, Queen''s University Belfast, Newforge Lane, Belfast BT9 5PX, UK;1. State Key Laboratory of Applied Microbiology (Ministry–Guangdong Province Jointly Breeding Base), Guangdong Provincial Microbial Culture Collection and Application Key Laboratory, Guangdong Institute of Microbiology, Guangzhou 510070, China;2. College of Horticulture, South China Agricultural University, Guangzhou 510642, China;3. Graduate School of Chinese Academy of Science, Beijing 100049, China;1. State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, PR China;2. Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, Urbana, 61801, United States;3. School of Environmental Science, Liaoning University, Shenyang, 110036, PR China;1. Ministry of Education Key Laboratory of Protection and Development Utilization of Tropical Crop Germplasm Resources, Hainan University, Haikou 570228, China;2. School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210046, China;3. Scion, Private Bag 3020, Rotorua 3046, New Zealand;4. School of Environmental and Resource Sciences, Zhejiang A & F University, Lin''an, Hangzhou, Zhejiang Province 311300, China
Abstract:A split-root experiment investigated the effects of inoculation with the arbuscular mycorrhizal fungus Glomus mosseae and arsenic (As) addition on As uptake by Pteris vittata L. Either part or all of the root system was inoculated with G. mosseae or exposed to As addition (50 ml 1000 μmol L−1 As 1 week before harvest). Mycorrhizal colonization substantially increased frond and root dry weight and P and As contents irrespective of As addition. Frond As contents in mycorrhizal plants were highest when the whole root system was exposed to As. Frond As concentrations and contents were higher when inoculation and As addition were in the same parts of the root system than when spatially separate. There were positive effects of arbuscular mycorrhiza inoculation on plant growth and As uptake, and inoculation of part of the roots seemed to be as effective as inoculation of the whole root system.
Keywords:Arbuscular mycorrhiza  Arsenate  Glomus mosseae  Pteris vittata  Split-root experiment
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