Changes in arbuscular mycorrhizal fungal communities during invasion by an exotic invasive plant |
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| Institution: | 1. School of Environmental Sciences, University of Guelph, 50 Stone Road East, Guelph, Ontario N1G 2W1, Canada;2. Department of Biology, Algoma University, 1520 Queen Street East, Sault Ste. Marie, Ontario P6A 2G4, Canada;1. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences, Yangling, Shaanxi 712100, China;2. National Animal Husbandry Service, Ministry of Agriculture of China, Beijing 100125, China;3. University of the Chinese Academy of Sciences, Beijing 100049, China;4. Institute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi 712100, China;1. Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China;2. College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China;3. University of Chinese Academy of Sciences, Beijing 100039, China;4. The Nurturing Station for the State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Lin’an 311300, Zhejiang, China;5. Department of Agricultural Sciences, Viikki Plant Science Centre, P.O. Box 27, FI-00014 University of Helsinki, Finland;6. Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Kreutzwaldi 1, 51014 Tartu, Estonia;1. State Key Laboratory of Grassland Agro-Ecosystems, Lanzhou University, Lanzhou 730020, Gansu, China;2. College of Pastoral Agricultural Science and Technology, Lanzhou University, Lanzhou 730020, Gansu, China;3. Retired scientist of AgResearch, Grasslands Research Centre, Private Bag 11-008, Palmerston North 4442, New Zealand |
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| Abstract: | Exotic invasive plants can show strong plant–soil feedback responses, but little is known about time scales for significant changes in soil microbial communities to occur after invasion. Previous work has suggested that plant invasions can modify arbuscular mycorrhizal (AM) fungal community structure. However, there is a lack of understanding about how long it takes for these changes to develop. To test this we investigated temporal changes in AM fungal communities colonising the invasive plant Vincetoxicum rossicum (Apocynaceae). We hypothesised that AM fungal community structure would change in a particular direction during the invasion process. We collected soil from two sites with a long history of invasion by this plant, with each site having paired invaded and uninvaded plots. Soil from these plots was used in a glasshouse experiment to characterise AM fungal community structure in the roots of V. rossicum at different times throughout a simulated growing season. AM fungal community structure differed between invaded and uninvaded plots. However, contrasting with our hypothesis, AM fungal communities colonising V. rossicum growing in soil from uninvaded plots did not change towards those in plants growing in previously invaded soil. Our data suggest that changes to AM fungal communities in the presence of V. rossicum require longer than the first growing season after establishment to develop. |
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| Keywords: | Plant invasion Plant–soil feedbacks Arbuscular mycorrhizal (AM) fungi Dog-strangling vine Denaturing gradient gel electrophoresis (DGGE) |
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