Cultivation of Jatropha curcas L. leads to pronounced mycorrhizal community differences |
| |
| Affiliation: | 1. IRD, UMR LSTM, 34398 Montpellier, France;2. Laboratoire Commun de Microbiologie IRD/ISRA/UCAD, Dakar, Senegal;1. Department of Biological Sciences, University of Manitoba, 190 Dysart Road, Winnipeg, MB R3T 2N2, Canada;2. Department of Soil Science, University of Manitoba, 309 Ellis Building, 13 Freedman Crescent, Winnipeg, MB R3T 2N2, Canada;1. Fort Lauderdale Research and Education Center, University of Florida, IFAS, 3205 College Ave., Fort Lauderdale, FL 33314, USA;2. BioFrontiers, University of Colorado, 3415 Colorado Ave., Boulder, CO 80303, USA;3. United States Department of Agriculture/ARS Australian Biological Control Laboratory, The Commonwealth Scientific and Industrial Research Organisation, Entomology, 41 Boggo Road, Dutton Park, Queensland 4102, Australia;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;1. Department of Plant and Wildlife Sciences, Brigham Young University, Provo, UT, 84602, USA;2. Rocky Mountain Research Station, Forest Service, United States Department of Agriculture, Shrub Sciences Laboratory, Provo, UT, 84606, USA;1. Department of Plant Sciences, University of California, Davis, Mail Stop 1, One Shields Ave, Davis, CA 95616, USA;2. Pest Management Research Unit, US Department of Agriculture, Agricultural Research Service, 1500 N Central Avenue, Sidney, MT 59270, USA;3. US Department of Agriculture, Agricultural Research Service, 243 Fort Keogh Road, Miles City, MT 59301, USA;1. Department of Geosciences and Natural Resource Management, University of Copenhagen, Rolighedsvej 23, 1958 Frederiksberg C, Denmark;2. Forest & Nature Lab, University of Ghent, Department Environment, Geraardsbergsesteenweg 267, 9090 Melle-Gontrode, Belgium;3. Faculty of Science and Technology, University College Ghent, Brusselsesteenweg 161, 9090 Melle, Belgium |
| |
| Abstract: | Plantations of Jatropha curcas for biodiesel production in tropical and sub-tropical regions are currently booming. Although Jatropha species are well known for synthesizing a range of toxicants, the effects of J. curcas monoculture on the symbiotic status of staple crops and trees have hardly been investigated. We transferred to the greenhouse soil samples collected from 3 J. curcas plantations established 1, 2 and 15 years ago in Senegal, together with soil samples from the corresponding adjacent fallow plots. We tested whether the modification of the original chemical and microbial soil properties induced by the development of J. curcas could alter the growth of common local crops (millet, cowpea) and of a local tree (Acacia seyal), all grown in pots. We also investigated effects at the scale of the root mycorrhizal community by determining root colonization patterns (frequency, intensity) and taxonomic diversity (18S rDNA sequencing). Pronounced compositional shifts in root mycorrhizal communities were almost systematically observed between Glomeraceae and Gigasporaceae, or in some cases within Glomeraceae. Biomass and N–P shoot contents were often higher in J. curcas-grown soils. In conclusion, the altered composition of the soil mycorrhizal communities in response to the development of J. curcas did not have detrimental effects on local staple crops. The functional consequences of such modified mycorrhizal assemblages should now be further investigated under more stressful conditions. |
| |
| Keywords: | Invasion ecology Mycorrhizal fungi Symbiosis Plant–soil feedback |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
