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| Symanczik, S.; Lehmann, M. F.; Wiemken, A.; Boller, T.; Courty, P. E.. |
| Drought is a limiting factor for crop production, especially in arid and semi-arid climates. In this study, Sorghum bicolor plants were inoculated, or not, with Rhizophagus irregularis, an arbuscular mycorrhizal (AM) strain typical for temperate climates, or Rhizophagus arabicus, a strain endemic to hyper-arid ecosystems. Plants were grown under well-watered or drought conditions in compartmented microcosms. Transpiration rates, plant growth, and nutrient uptake (using 15N as a tracer) were determined to assess the impact of drought stress on sorghum plants in AM symbiosis. Although AM colonization did not affect the bulk biomass of host plants, R. arabicus improved their transpiration efficiency and drought tolerance more than R. irregularis. Moreover, R.... |
| Tipo: Journal paper |
Palavras-chave: Soil biology. |
| Ano: 2018 |
URL: http://orgprints.org/34760/1/symanczik-etal-2018_mycorrhiza-Vol28_Issue8-p779-785.pdf |
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| Oehl, F.; Sieverding, E.; Mäder, Paul; Dubois, D.; Ineichen, K.; Boller, T.; Wiemken, A.. |
| Previous work has shown considerably enhanced soil fertility in agroecosystems managed by organic farming compared to conventional farming. Arbuscular mycorrhizal fungi (AMF) play a crucial role in nutrient acquisition and soil fertility. The objective of this study was to investigate the diversity of AMF in the context of a long-term study in which replicated field plots, at a single site in Central Europe (DOK-Trial. Therwil, Switzerland), had been cultivated for 22 years according to two "organic" and two "conventional" farming systems. In the 23rd year, the field plots, carrying an 18-month-old grass-clover stand, were examined in two ways with respect to AMF diversity. Firstly, AMF spores were isolated and morphologically identified from soil samples.... |
| Tipo: Journal paper |
Palavras-chave: Biodiversity and ecosystem services. |
| Ano: 2004 |
URL: http://orgprints.org/2811/1/no-document-rft.rtf |
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| Mäder, P.; Vierheilig, H.; Streitwolf-Engel, R.; Boller, T.; Freyer, B.; Christie, P.; Wiemken, A.. |
| We studied the transport of "&N from a soil compartment separated from a plant root compartment by a hydrophobic polytetrafuoroethylene (PTFE) membrane to plants in the presence and absence of arbuscular mycorrhizal fungi (AMF). We have previously shown that this type of membrane efficiently inhibits mass fow and diffusion of mobile ions in the soil solution in an abiotic system, but can be penetrated by the hyphae of mycorrhizal fungi. Mycorrhizal tomatoes (Lycopersicon esculentum) colonized by Glomus mosseae were grown at two N fertilizer concentrations in a root compartment. A PTFE membrane was placed between the root compartment and an adjoining soil compartment that was inaccessible to the roots but accessible to the AMF hyphae (hyphal... |
| Tipo: Journal paper |
Palavras-chave: Soil biology. |
| Ano: 2000 |
URL: http://orgprints.org/26770/1/Maeder_et_al_2000_NP.pdf |
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