TY - GEN A1 - Sut-Lohmann, Magdalena A1 - Boldt-Burisch, Katja A1 - Pohle, Ina A1 - Raab, Thomas T1 - Advancing performance of green technologies for remediation and reclamation of degraded urban soils Y1 - 2015 SN - 978-3-944863-18-4 SN - 978-3-944863-19-1 PB - United Nations University, Institute for Integrated Management of Material Fluxes and of Resources CY - Dresden ER - TY - CHAP A1 - Boldt-Burisch, Katja A1 - Naeth, M. Anne T1 - The influence of arbuscular mycorrhizae on root precision nutrient foraging of two pioneer plant species during early reclamation T2 - European Geosciences Union General Assembly 2017 Vienna, Austria, 23–28 April 2017 N2 - On many post mining sites in the Lusatian Mining District (East Germany) soil heterogeneity consists of sandy soil with embedded clay-silt fragments. Those clays silt fragments might act as nutrient hotspots. Arbuscular mycorrhizal fungi in an infertile ecosystem could enhance a plant’s ability to selectively forage for those nutrients and thus to improve plants nutrient supply. In our study we investigated whether silt-clay fragments within a sandy soil matrix induced preferential root growth of Lotus corniculatus and Calamagrostis epigeios, whether arbuscular mycorrhizae influenced root foraging patterns, and to what extent selective rooting in clay silt fragments influenced plant growth were addressed in this research. Soil types were sterile and non-sterile sandy soil and clay-silt fragments. Treatments were with and without arbuscular mycorrhizae, with and without soil solution, and soil solution and mycorrhizal inoculum combined. Root biomass, root density and intraradical fungal alkaline phosphatase activity and frequency were determined in fragments relative to sandy soil. Furthermore, temporal relationship of number of roots in fragments and plant height was assessed. Lotus corniculatus showed strong selective rooting into fragments especially with those plants treated with commercial cultivated arbuscular mycorrhizae; Calamagrostis epigeios did not. Without arbuscular mycorrhizae, L. corniculatus growth was significantly reduced and selective rooting did not occur. Selective rooting induced significant growth spurts of L. corniculatus. Roots in fragments had higher fungal alkaline phosphatase activity suggesting that mycorrhizal efficiency and related plants phosphorus supply is enhanced in roots in fragments. The application of cultivated arbuscular mycorrhizal fungi significantly and quickly influenced root foraging patterns, especially those of L. corniculatus, suggesting mycorrhizae may also enhance the ability of other plants to selectively forage for nutrients and could therefore play an important role in early plant establishment on infertile reclamation sites. Y1 - 2017 UR - http://meetingorganizer.copernicus.org/EGU2017/EGU2017-12570.pdf N1 - EGU2017-12570 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - GEN A1 - Felderer, Bernd A1 - Boldt-Burisch, Katja A1 - Schneider, Bernd Uwe A1 - Hüttl, Reinhard F. A1 - Schulin, Rainer T1 - Root growth of Lotus corniculatus interacts with P distribution in young sandy soil T2 - Biogeosciences Discussion Y1 - 2012 SN - 1810-6285 VL - 9 IS - 7 SP - 9637 EP - 9665 ER - TY - CHAP A1 - Boldt-Burisch, Katja A1 - Fritsch, Simone A1 - Schneider, Bernd Uwe A1 - Hüttl, Reinhard F. ED - Merbach, Wolfgang ED - Ruppel, Silke ED - Augustin, Jürgen T1 - Erste Ergebnisse zur Bedeutung des Wurzelwachstums für die Bodenentwicklung in der intialen Phase der Ökosystemgenese T2 - Mikrobielle Ökologie des Wurzelraumes, 21. Borkheider Seminar zur Ökophysiologie des Wurzelraumes, Lutherstadt Wittenberg vom 23. - 24. September 2010 Y1 - 2011 SN - 978-3-89574-764-9 SP - 49 EP - 55 PB - Köster CY - Berlin ER - TY - CHAP A1 - Boldt-Burisch, Katja A1 - Schneider, Bernd Uwe A1 - Fritsch, Simone A1 - Hüttl, Reinhard F. T1 - Charakterisierung der Wurzelwachstumsdynamik krautiger Vegetation in der initialen Phase der Bodenentwicklung T2 - Böden verstehen - Böden nutzen - Böden fit machen, Jahrestagung der Deutschen Bodenkundlichen Gesellschaft, 3. - 9. September 2011 Y1 - 2011 UR - http://eprints.dbges.de/754/ ER - TY - GEN A1 - Boldt-Burisch, Katja A1 - Schneider, Bernd Uwe A1 - Naeth, M. Anne A1 - Hüttl, Reinhard F. T1 - Root exudation of organic acids of herbaceous pioneer plants and their growth in steriled and non-steriled nutrient-poor, sandy soils from post-mining sites T2 - Pedosphere N2 - Nutrient-poor, sandy soils form the prevailing substrate at post-mining sites and present a challenge for plants. We studied the organic acid quantity and composition of three commonly occurring pioneer plant species, the legumes Lotus corniculatus L. and Trifolium arvense L. and the grass Calamagrostis epigeios (L.) Roth, to determine if plant growth and exudation differed with (nonsterile soil) and without (sterile soil) an indigenous soil microbial community. We investigated whether organic acids were found in the rhizosphere and surrounding soil and whether this influenced nutrient mobilization. This study consists of linked field investigations and a greenhouse experiment. Plants were grown in the greenhouse in either steriled or non-steriled sandy soil from a reclamation site in the Lusatian mining landscape (Welzow S¨ud, East Germany). After seven months, the plant biomass, root morphology, organic acids, and water-soluble nutrients and root colonization with arbuscular mycorrhizal fungi (AMF) and dark septate endophytes (DSE) were analyzed. Roots of all three plants in the field and greenhouse experiments were highly colonized with AMF. Calamagrostis epigeios and T. arvense had a significantly higher colonization frequency with DSE than L. corniculatus. The quantity and composition of organic acids strongly differed among plant species, with the highest number of organic acids found for L. corniculatus and lowest for C. epigeios. The quantity of organic acids was greatly reduced in all plants under steriled soil conditions. However, the composition of organic acids and plant growth in steriled soil were reduced for both legumes, but not for C. epigeios, which had a higher biomass under steriled conditions. Changes in nutrient concentrations in the field rhizosphere soil relative to those in the control were measurable after seven months. While the spectrum of organic acids and the growth of legumes seemed to be dependent on a highly diverse soil microbial community and a symbiotic partner, the grass C. epigeios appeared capable of mobilizing enough nutrients without an indigenous microbial community, and might be more competitive on sites where soil microbial diversity and activity are low. Y1 - 2019 U6 - https://doi.org/10.1016/S1002-0160(18)60056-6 SN - 1002-0160 VL - 29 IS - 1 SP - 34 EP - 44 ER - TY - GEN A1 - Boldt-Burisch, Katja A1 - Naeth, M. Anne A1 - Schneider, Bernd Uwe A1 - Hüttl, Reinhard F. T1 - Linkage between root system development of three pioneer plant species and soil nitrogen during the initial phase of ecosystem development of the artificial watershed Hühnerwasser T2 - Geophysical Research Abstracts N2 - ln 2005, a 7-ha artificial watershed (Hühnerwasser) was built an a post mined Iandscape in Lusatia, Germany from sandy Substrates of Pleistocene origin, commonly used in reclamation. The watershed was developed to investigate the initial phase of soil and ecosystem development under natural conditions. At this early stage, nutrients in young sandy soils are limited and pioneer plants become key components of natural succession. Local abundant pioneering legumes Lotus corniculatus and Trifolium arvense and one pioneer grass species Calamagrostis epigeios were investigated 5 years after watershed construction. ln the present study, we investigated the influence of spatial root distribution of these species an soil nitrogen accumulation and on nutrient redistribution. Soil, including roots, was sampled from field monoliths covered with the aforementioned plant species. Root systems of both legumes were mainly restricted to the upper 20 cm of soil, whereas roots of C. epigeios also developed strongly at greater depths. A positive relationship was found, with higher plant densities associated with higher root densities, which were related with higher nodule densities for legumes and which were all associated with significantly higher soil nitrogen concentration relative to non-vegetated areas. This research provides rare information on the role root systems of pioneer legumes play in soil nitrogen input and development of nutrient patterns in the early stage of soil and ecosystem development during revegetation by natural succession. Y1 - 2019 UR - https://meetingorganizer.copernicus.org/EGU2019/EGU2019-5362.pdf VL - 21 ER - TY - CHAP A1 - Sut-Lohmann, Magdalena A1 - Boldt-Burisch, Katja A1 - Raab, Thomas T1 - Effect of ryegrass (Lolium perenne L.) roots inoculation using different arbuscular mycorrhizal fungi (AMF) species on sorption of iron-cyanide (Fe-CN) complexes T2 - European Geosciences Union, General Assembly 2016, Vienna, Austria, 17 April – 22 May 2016 N2 - Soils and groundwater on sites of the former Manufactured Gas Plants (MGPs) are contaminated with various complex iron-cyanides (Fe-CN). Phytoremediation is a promising tool in stabilization and remediation of Fe-CN affected soils, however, it can be a challenging task due to extreme adverse and toxic conditions. Phytoremediation may be enhanced via rhizosphere microbial activity, which can cooperate on the degradation, transformation and uptake of the contaminants. Recently, increasing number of scientist reports improved plants performance in the removal of toxic compounds with the support of arbuscular mycorrhizae fungi (AMF). Series of batch experiments using potassium hexacyanoferrate (II) solutions, in varying concentrations, were used to study the effect of ryegrass roots (Lolium perenne L.) inoculation with Rhizophagus irregularis and a mixture of Rhizophagus irregularis, Funneliformis mosseae, Rhizophagus aggregatus, and Claroideoglomus etunicatum on Fe-CN sorption. Results indicated significantly higher colonization of R. irregularis than for the mixture of AMF species on ryegrass roots. Sorption experiments revealed significantly higher reduction of total CN and free CN content in the mycorrhizal roots, indicating greater cyanide decrease in the treatment inoculated with R. irregularis. Our study indicates contribution of AM fungi in phytoremediation of Fe-CN contaminated soil. Y1 - 2016 UR - http://meetingorganizer.copernicus.org/EGU2016/EGU2016-4223-2.pdf N1 - EGU2016-4223-2 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - CHAP A1 - Zaplata, Markus Klemens A1 - Maurer, Thomas A1 - Boldt-Burisch, Katja A1 - Schaaf, Wolfgang A1 - Hinz, Christoph T1 - An interactive survey panel regarding the effects of mice (Microtus spec.) on a young ecosystem T2 - European Geosciences Union, General Assembly 2015, Vienna, Austria, 13 April - 17 May 2015 KW - interactive survey panel Y1 - 2015 UR - http://meetingorganizer.copernicus.org/EGU2015/EGU2015-13818.pdf N1 - EGU2015-13818 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - THES A1 - Boldt-Burisch, Katja T1 - Einfluss des Wurzelwachstums dominanter Pionierpflanzenarten auf die Bodenentwicklung in der initialen Phase der Ökosystemgenese N2 - Im Rahmen der vorliegenden Arbeit wurden Untersuchungen zu Interaktionen zwischen pleistozänem Kipprohsubstrat und den auf dem „Hühnerwasser“-Einzugsgebiet vorkommenden abundanten Pionierpflanzenarten L. corniculatus, C. epigeios und T. arvense durchgeführt, um deren Bedeutung für die initiale Bodenentwicklung zu analysieren. Die Studien umfassten Untersuchungen zur räumlichen Wurzelverteilung, zur Wurzelmorphologie, zur Nährstoffanreicherung, -aufnahme und -umverteilung im Boden, sowie zur Exsudation organischer Säuren und zu den Konkurrenzeffekten der drei Pflanzenarten während der Keimung. Y1 - 2012 PB - BTU, LS Bodenschutz und Rekultivierung CY - Cottbus ER - TY - GEN A1 - Boldt-Burisch, Katja A1 - Gerke, Horst H. A1 - Nii-Annang, Seth A1 - Schneider, Bernd Uwe A1 - Hüttl, Reinhard F. T1 - Root system development of Lotus corniculatus L. in calcareous sands with embedded finer-textured fragments in an initial soil T2 - Plant and Soil Y1 - 2013 U6 - https://doi.org/10.1007/s11104-012-1505-z VL - 368 IS - 1-2 SP - 281 EP - 296 ER - TY - GEN A1 - Felderer, Bernd A1 - Boldt-Burisch, Katja A1 - Schneider, Bernd Uwe A1 - Hüttl, Reinhard F. A1 - Schulin, Rainer T1 - Root growth of Lotus corniculatus interacts with P distribution in young sandy soil T2 - Biogeosciences KW - root growth Y1 - 2013 SN - 1726-4189 VL - 10 IS - 3 SP - 1737 EP - 1749 ER - TY - GEN A1 - Boldt-Burisch, Katja A1 - Schneider, Bernd Uwe A1 - Fritsch, Simone A1 - Hüttl, Reinhard F. T1 - Influence of root growth of two pioneering plant species on soil development during the initial stage of ecosystem genesis in the Lusatian post mining landscape T2 - Canadian journal of soil science Y1 - 2012 SN - 1918-1841 VL - 92 IS - 1 SP - 67 EP - 76 ER - TY - GEN A1 - Boldt-Burisch, Katja A1 - Pörs, Yvonne A1 - Haupt, Bastian A1 - Bitterlich, Michael A1 - Kühn, Christina A1 - Grimm, Bernhard A1 - Franken, Philipp T1 - Photochemical processes, carbon assimilation and RNA accumulation of sucrose transporter genes in tomato arbuscular mycorrhiza T2 - Journal of plant physiology Y1 - 2011 SN - 1618-1328 VL - 168 IS - 11 SP - 1256 EP - 1263 ER - TY - GEN A1 - Boldt-Burisch, Katja A1 - Rank, Barbara T1 - Stomata dimorphism in dicotyledonous plants of temperate climate T2 - Feddes Repertorium Y1 - 2010 SN - 1522-239X VL - 121 IS - 5-6 SP - 167 EP - 183 ER - TY - GEN A1 - Boldt-Burisch, Katja A1 - Naeth, M. Anne A1 - Schneider, Bernd Uwe A1 - Hüttl, Reinhard F. T1 - Linkage between root systems of three pioneer plant species and soil nitrogen during early reclamation of a mine site in Lusatia, Germany T2 - Restoration Ecology N2 - In 2005, a 7-ha artificial watershed (Chicken Creek) was built on a post mined landscape in Lusatia, Germany from sandy substrates of Pleistocene origin, commonly used in reclamation. The watershed was developed to investigate the initial phase of soil and ecosystem development under natural conditions. At this early stage, mineral nitrogen in young sandy soils is primarily limited and nitrogen fixing legumes become key components of natural succession. Local abundant pioneering legumes Lotus corniculatus and Trifolium arvense and one pioneer grass species Calamagrostis epigeios were investigated 5 years after watershed construction. In this study, we investigated the influence of spatial root and nodule distribution of these species on soil nitrogen accumulation. Soil, including roots, was sampled from field monoliths covered with the aforementioned plant species. Root systems of both legumes were mainly restricted to the upper 20 cm of soil, whereas roots of C. epigeios also developed strongly at greater depths. A positive relationship was found, with higher plant densities associated with higher root densities which were associated with higher nodule densities for legumes and which were all associated with significantly higher soil nitrogen content relative to non-vegetated areas. This research provides rare information on the role root systems of pioneer legumes play in soil nitrogen input in the early stage of soil and ecosystem development during revegetation by natural succession. Y1 - 2015 U6 - https://doi.org/10.1111/rec.12190 SN - 1526-100X VL - 23 IS - 4 SP - 357 EP - 365 ER - TY - GEN A1 - Mantovani, Dario A1 - Veste, Maik A1 - Boldt-Burisch, Katja A1 - Fritsch, Simone A1 - Koning, Laurie Anne A1 - Freese, Dirk T1 - Carbon allocation, nodulation, and biological nitrogen fixation of black locust (Robinia pseudoacacia L.) under soil water limitation T2 - Annals of Forest Research N2 - The pioneer tree black locust (Robinia pseudoacacia L.) is a drought-resistant tree and, in symbiosis with Rhizobium, able to fix dinitrogen from the atmosphere. It is, therefore, an interesting species for marginal lands where soil amelioration is sought in addition to economic gain. However, the interaction between soil water availability, carbon allocation and nitrogen fixation is important for a successful establishment of trees on marginal lands and has not yet been investigated for black locust. Twoyear-old trees were grown under various soil water conditions and drought cycles. The stable isotopic composition of C (δ 13C) and N (δ 15N) of the leaves was used to identify i) the effective drought condition of the treatments and ii) the portion N accrued from the atmosphere by the biological nitrogen fixation. Drought-stressed plants significantly reduced their total aboveground biomass production, which was linearly linked to tree transpiration. The shoot:root ratio values changed from 2.2 for the drought-stressed to 4.3 for the well-watered plants. Our investigation shows that drought stress increases the nodule biomass of black locust in order to maintain biological nitrogen fixation and to counteract the lower soil nitrogen availability. The biological nitrogen fixation of drought-stressed trees could be maintained at relatively higher values compared to the well-watered trees. The average leaf nitrogen content varied between 2.8% and 3.0% and was not influenced by the drought stress. Carbon fixation, carbon allocation, and biological nitrogen fixation are to some extent balanced at low irrigation and allow Robinia to cope with long-term water constraints. The combination of black locust’s ecophysiological and morphological plasticity make it interesting as a biomass source for bioenergy and timber production, even in nutrient-limited and drought-affected areas of Europe. Y1 - 2015 U6 - https://doi.org/10.15287/afr.2015.420 SN - 2065-2445 VL - 58 IS - 2 SP - 259 EP - 274 ER - TY - GEN A1 - Sut-Lohmann, Magdalena A1 - Boldt-Burisch, Katja A1 - Raab, Thomas T1 - Possible evidence for contribution of arbuscular mycorrhizal fungi (AMF) in phytoremediation of iron–cyanide (Fe–CN) complexes T2 - Ecotoxicology N2 - Arbuscular mycorrhizal fungi (AMF) are integral functioning parts of plant root systems and are widely recognized for enhancing contaminants uptake and metabolism on severely disturbed sites. However, the patterns of their influence on the phytoremediation of iron–cyanide (Fe–CN) complexes are unknown. Fe–CN complexes are of great common interest, as iron is one of the most abundant element in soil and water. Effect of ryegrass (Lolium perenne L.) roots inoculation, using mycorrhizal fungi (Rhizophagus irregularis and a mixture of R. irregularis, Funneliformis mosseae, Rhizophagus aggregatus, and Claroideoglomus etunicatum), on iron–cyanide sorption was studied. Results indicated significantly higher colonization of R. irregularis than the mixture of AMF species on ryegrass roots. Series of batch experiments using potassium hexacyanoferrate (II) solutions, in varying concentrations revealed significantly higher reduction of total CN and free CN content in the mycorrhizal roots, indicating greater cyanide decrease in the treatment inoculated with R. irregularis. Our study is a first indication of the possible positive contribution of AM fungi on the phytoremediation of iron–cyanide complexes. Y1 - 2016 UR - http://link.springer.com/article/10.1007%2Fs10646-016-1678-y U6 - https://doi.org/10.1007/s10646-016-1678-y SN - 1573-3017 VL - 25 IS - 6 SP - 1260 EP - 1269 ER - TY - GEN A1 - Boldt-Burisch, Katja A1 - Naeth, M. Anne T1 - Early colonization of root associated fungal communities on reclamation substrates at a diamond mine in the Canadian Sub-Arctic T2 - Applied Soil Ecology N2 - Mining sites are harsh environments and establishment of root associated symbiotic fungi may be crucial for plant establishment and long term community development. Diamond mining in the Northwest Territories produces large amounts of processed kimberlite, and in some cases lake bed sediment and reclamation is needed for re-establishment of ecosystem function. This study investigated early fungal colonization with arbuscular mycorrhizae and dark septate endophytes on common reclamation substrates of different ages, relative to native tundra. Natural colonization of vegetation free sites with mycorrhizal spores on a trajectory associated with substrate age and type was very low. Fungal spore quantity and diversity was significantly accelerated by establishment of vegetation. Dark septate endophytes dominated native site Cyperaceae whereas reclamation site grasses were dominated by arbuscular mycorrhizae. Topsoil amendment was most effective for fungal colonization on reclamation substrates suggesting that a single application of topsoil can have a long term effect on the soil fungal community. Y1 - 2017 U6 - https://doi.org/10.1016/j.apsoil.2016.10.006 SN - 0929-1393 VL - 110 SP - 118 EP - 126 ER - TY - GEN A1 - Boldt-Burisch, Katja A1 - Naeth, M. Anne T1 - Mycorrhization affects root distribution of Lotus corniculatus and Calamagrostis epigeios in a nutrient poor heterogeneous soil in a rhizotron experiment T2 - Rhizosphere N2 - Plant growth can be highly dependent on symbiotic partners, such as arbuscular mycorrhizal fungi (AMF) that improve the plant's nutrient uptake. However, less is known about whether AMF can beneficially influence spatial root distribution, especially in soils with patchy nutrient concentrations. This study was conducted to evaluate root distribution and plant response of Lotus corniculatus and Calamagrostis epigeios in a heterogeneous nutrient poor soil under different mycorrhizal conditions. Heterogeneous soil conditions of a reclamation site in the Lusation mining district, consisting of a nutrient poor sandy soil with embedded large silt-clay fragments, were used for this rhizotron experiment. Treatments were non-mycorrhizal and mycorrhizal L. corniculatus and C. epigeios in sterile soil and in sterile soil with a fungal free soil solution and mycorrhizal plants in a non-sterile soil. Mycorrhizal fungi were exogenous (Funneliformis mosseae and Rhizophagus irregularis) in sterile soil and indigenous mycorrhizal fungi in non-sterile soil. Plants were grown in rhizotrons, with clay-silt fragments in a sandy soil matrix. Treatment response variables were root density, root and shoot biomass, shoot tissue nutrient concentrations, and percentage of roots in clay-silt fragments relative to total root biomass, mycorrhizal colonization and intraradical fungal alkaline phosphatase (ALP) activity. Exogenous mycorrhizal L. corniculatus plants had higher root mass density in clay-silt fragments than indigenous mycorrhizal and non-mycorrhizal plants while C. epigeios had only higher root mass density in clay-silt fragments relative to sandy soil only in exogenous mycorrhizal plants in sterile soil with soil solution. Nonmycorrhizal C. epigeios shoot biomass in sterile soil did not significantly differ from that of exogenous mycorrhizal treatments. The greatest shoot biomass for both plant species, was with the highest percentage of roots in clay-silt fragments relative to the total root system. Exogenous mycorrhizal plants of both species had highest shoot phosphorus concentrations in sterile soil with soil solution. However, intraradical fungal ALP activity was highest in indigenous mycorrhizal plants. The results indicate that mycorrhizal conditions can have a strong influence on spatial root development. The consequences are that conditions, which promote root growth, lead to more roots in nutrient rich clay-silt fragments and thus enhance plant exploitation of heterogeneously distributed soil nutrients. Y1 - 2017 U6 - https://doi.org/10.1016/j.rhisph.2017.06.003 SN - 2452-2198 VL - 4 SP - 36 EP - 47 ER - TY - GEN A1 - Boldt-Burisch, Katja A1 - Naeth, M. Anne A1 - Schneider, Uwe A1 - Schneider, Beate A1 - Hüttl, Reinhard F. T1 - Plant growth and arbuscular mycorrhizae development in oil sands processing by-products T2 - Science of the Total Environment N2 - Soil pollutants such as hydrocarbons can induce toxic effects in plants and associated arbuscular mycorrhizal fungi (AMF). This study was conducted to evaluate if the legume Lotus corniculatus and the grass Elymus trachycaulus and arbuscular mycorrhizal fungi could growin two oil sands processing by-products after bitumen extraction fromthe oil sands in northern Alberta, Canada. Substrate treatmentswere coarse tailings sand (CTS), a mix of dry mature fine tailings (MFT) with CTS (1:1) and Pleistocene sandy soil (hydrocarbon free); microbial treatments were without AMF, with AMF and AMF plus soil bacteria isolated from oil sands reclamation sites. Plant biomass, root morphology, leaf water content, shoot tissue phosphorus content and mycorrhizal colonization were evaluated. Both plant species had reduced growth in CTS and tailings mix relative to sandy soil. AMF frequency and intensity in roots of E. trachycaulus was not influenced by soil hydrocarbons; however, it decreased significantly over time in roots of L. corniculatus without bacteria in CTS. Mycorrhizal inoculation alone did not significantly improve plant growth in CTS and tailings mix; however, inoculation with mycorrhizae plus bacteria led to a significantly positive response of both plant species in CTS. Thus, combined inoculationwith selected mycorrhizae and bacteria led to synergistic effects. Such combinations may be used in future to improve plant growth in reclamation of CTS and tailings mix. Y1 - 2018 U6 - https://doi.org/10.1016/j.scitotenv.2017.11.188 SN - 1879-1026 SN - 0048-9697 VL - 621 SP - 30 EP - 39 ER - TY - GEN A1 - Boldt-Burisch, Katja A1 - Naeth, M. Anne T1 - Heterogeneous soil conditions influence fungal alkaline phosphatase activity in roots of Lotus corniculatus T2 - Applied Soil Ecology N2 - Extremes in soil water, temperature, pH and inorganic nutrient availability can highly influence mycorrhizal formation and nutrient acquisition. However, the influence of soil heterogeneity and seasonal soil changes on fungal alkaline phosphatase (ALP) activity in mycorrhizal roots is unknown. Whether the activity of intraradical fungal ALP is influenced by soil texture heterogeneity, soil depth, nutrient concentrations and root density during the growing season were addressed in this research. The root system of Lotus corniculatus grown on a reclamation site was analyzed for intraradical mycorrhizal ALP activity in 0–10, 10–20 and 20–30 cm depth increments of sandy soil and in clay–silt fragments (mostly localized in 10–20 cm) from May to September. Root length density and water soluble nutrient contents in sandy soil and clay–silt fragments were determined for each sample. Soil water content and soil temperature data of a nearby site were used for climate conditions on sampling dates. Fungal ALP activity in roots growing in clay–silt fragments was higher than in those growing in sandy soil, independent of sampling date. Fungal ALP activity in sandy soil increased with soil depth which is related to decreasing root densities and lower nutrient concentrations. However, nutrient dense clay–silt fragments significantly positively influenced local mycorrhizal ALP activity in L. corniculatus roots, suggesting that the ability of mycorrhizae to selectively take up phosphorus and other nutrients from those nutrient hot spots is enhanced and could play a significant role in successful establishment of pioneer plant species on infertile reclamation sites. Y1 - 2017 U6 - https://doi.org/10.1016/j.apsoil.2017.03.024 SN - 0929-1393 VL - 116 SP - 55 EP - 63 ER - TY - GEN A1 - Stover, Holly J. A1 - Naeth, M. Anne A1 - Boldt-Burisch, Katja T1 - Soil disturbance changes arbuscular mycorrhizal fungi richness and composition in a fescue grassland in Alberta Canada T2 - Applied Soil Ecology N2 - Native grasslands are endangered by non-native plant invasion worldwide, including foothills fescue grasslands in North America. Large populations of non-native plant species have established in these disturbed fescue grasslands, forming dense monocultures and spreading into undisturbed areas. Soil disturbance and plant invasion can alter the arbuscular mycorrhizal fungi (AMF) community, an important symbiotic partner of most land plants, which could negatively affect native plant reestablishment. The objective of this study was to assess whether AMF communities on a fescue grassland shifted in response to disturbances by landfill storage and gravel quarrying and with invasion of non-native plant species relative to undisturbed grassland. Soil and root-AMF samples were procured from disturbed and undisturbed areas at three sites. Plant canopy cover and species richness were assessed. Soils were analyzed for pH; electrical conductivity; total nitrogen, carbon and phosphorus; and available nutrients. For relative AMF taxa abundance assessment, NS31 and AMF specific primer AML2 were used to amplify a central fragment of the V3 and V4 region of the 18S rRNA gene. AMF were characterized using 454 pyrosequencing and multiplexed barcoded samples amplified from genomic DNA isolated from roots. There were 92 AMF, including 15 potentially novel taxa detected. AMF communities in disturbed and undisturbed sampling locations were distinct except for one site, and indicator AMF virtual taxa (VT) for undisturbed grassland and disturbed sites were identified. AMF richness was higher in undisturbed (72 VT) than disturbed (64 VT) sites and AMF richness was positively correlated with plant species richness, diversity and native plant cover, and negatively correlated with non-native plant cover. There were 43 AMF VT on undisturbed and disturbed sites, 62% with higher relative abundance on disturbed sites. Site disturbance shifted AMF communities relative to undisturbed native fescue grassland; thus restoration success with native plants might be highly dependent on reintroducing native AMF. Y1 - 2018 U6 - https://doi.org/10.1016/j.apsoil.2018.07.008 SN - 0929-1393 VL - Vol. 131 SP - 29 EP - 37 ER - TY - GEN A1 - Boldt-Burisch, Katja A1 - Naeth, M. Anne T1 - Phosphogypsum significantly alters root growth and fungal colonization of smooth brome and sheep fescue on a reclamation site T2 - Rhizosphere N2 - Phosphogypsum (PG) is a by-product of phosphate fertilizer production. This study is the first to investigate Bromis inermis and Festuca ovina root morphology and colonization with arbuscular mycorrhizal fungi and dark septate endophytes (DSE) in pure PG and PG with a soil cap (soil). Root length density was significantly lower for plants on PG than on soil and both plant species were colonized with AMF and DSE, with lower frequency and intensity in PG. Phosphorus (20 times), calcium (35 times) and sulphur (50 times) were significantly higher in PG than in soil; resulting higher root tissue concentrations were significantly negatively correlated with mycorrhizal colonization for Festuca but not Bromus. Higher fungal colonization of Bromus, especially with DSE known to be prevalent in extreme environments, may be responsible for its better performance on PG relative to Festuca. Y1 - 2019 U6 - https://doi.org/10.1016/j.rhisph.2018.12.003 SN - 2452-2198 VL - 9 SP - 106 EP - 109 ER - TY - GEN A1 - Boldt-Burisch, Katja A1 - Schillem, Steffi A1 - Schneider, Bernd Uwe A1 - Hüttl, Reinhard F. T1 - The effect of nitrogen-modified lignite granules on mycorrhization and root and shoot growth of Secale cereale (winter rye) in a nutrient-deficient, sandy soil T2 - Archives of Agronomy and Soil Science N2 - Organic soil amendments such as modified lignite and biostimulants like arbuscular mycorrhizal fungi (AMF) may have the potential to improve soil biological conditions of agricultural soils. The aim of the study was to test if nitrogen-modified lignite granules (NH) are beneficial for mycorrhization, root and shoot development compared to common mineral nitrogen (Nmin) in a nitrogen and phosphorus limited soil. A greenhouse experiment with Secale cereale L. was carried out using non-sterilized and sterilized sand substrate treated with NH, AMF or Nmin and AMF+NH and AMF+Nmin and was compared to an untreated substrate (control). 7.5 t ha-1 NH and 120 kg Nmin ha−1 led to a similar increase of AMF colonization compared to the control; however, Nmin had a more positive influence on biomass development. Significantly highest mycorrhizal colonization intensity was found for AMF+NH. The co-application of AMF+NH revealed that shoot and root development and shoot nutrient concentrations were significantly higher or were among the significantly highest values, when compared to the other treatments. AMF+NH may be a suitable soil amendment for nutrient-limited soils and may be more sustainable than Nmin due to a combined increase of nitrogen, AMF and carbon/humic acids in the soil that comes with the NH. Y1 - 2020 U6 - https://doi.org/10.1080/03650340.2020.1869724 SN - 1476-3567 ER - TY - CHAP A1 - Sut-Lohmann, Magdalena A1 - Boldt-Burisch, Katja A1 - Raab, Thomas T1 - Influence of Arbuscular Mycorrhizal Fungus (AMF) on degradation of iron-cyanide complexes T2 - European Geosciences Union, General Assembly 2015, Vienna, Austria, 13 April - 17 May 2015 KW - arbuscular mycorrhizal fungus Y1 - 2015 UR - http://meetingorganizer.copernicus.org/EGU2015/EGU2015-250.pdf N1 - EGU2015-250 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - CHAP A1 - Boldt-Burisch, Katja A1 - Naeth, M. Anne A1 - Schneider, Bernd Uwe A1 - Hüttl, Reinhard F. T1 - Root growth, mycorrhization and physiological effects of plants growing on oil tailing sands T2 - European Geosciences Union, General Assembly 2015, Vienna, Austria, 13 April - 17 May 2015 Y1 - 2015 UR - http://meetingorganizer.copernicus.org/EGU2015/EGU2015-8991-1.pdf N1 - EGU2015-8991-1 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - CHAP A1 - Hüttl, Reinhard F. A1 - Schulin, Rainer A1 - Schneider, Bernd Uwe A1 - Boldt-Burisch, Katja A1 - Felderer, Bernd ED - Hüttl, Reinhard F. ED - Kögel-Knabner, Ingrid ED - Schulin, Rainer ED - Gerwin, Werner T1 - Project B1 – Spatio-temporary development of root growth, decay and exudation in the initial phase of the ecosystem genesis T2 - Structures and processes of the initial ecosystem development phase in an artificial water catchment (Final report CRC/TR 38) Y1 - 2013 SP - 45 EP - 49 PB - BTU, Forschungszentrum Landschaftsentwicklung und Bergbaulandschaften (FZLB) CY - Cottbus ER - TY - CHAP A1 - Mantovani, Dario A1 - Veste, Maik A1 - Boldt-Burisch, Katja A1 - Fritsch, Simone ED - Jeltsch, Florian ED - Joshi, Jasmin T1 - Black locust (Robinia pseudoacacia L.) root growth response to different irrigation regimes T2 - GfÖ 43rd Annual Meeting, Building bridges in ecology, linking systems, scales and disciplines, September 9 to 13, 2013, Potsdam, Germany N2 - Robinia pseudoacacia L. is a pioneer tree species native from North America. Its original range is a climatic region classified as humid to sub-humid, with a mean annual precipitation of 1020 to 1830 mm. However, it grows under a wide range of edaphic and climatic conditions and the species has proven to be relatively drought tolerant. In central Europe, with a continental climate, the species has been successfully cropped for biomass production also on marginal land, even in post-­‐mining areas characterized by water limitation and harsh edaphic conditions. Due its drought tolerance, fast resprouting rate and its ability to live in symbiosis with Rhizobia and thus fix atmospheric nitrogen, black locust could become a key species for short-­‐rotation plantation on marginal land. Several studies have been already carried out to quantify the black locust above ground production and its water use efficiency. However, the relation between the black locust biomass allocation, root system development and plant water use has still to be examined. In our study we evaluated the drought stress effect on black locust below ground biomass production, root distribution, and the root and rhizobial association. Different irrigation regimes were chosen to test the plant’s performance in a lysimeter experiment, under semi-­‐controlled environmental conditions, for the duration of two vegetation periods. From the results obtained we determined the root biomass allocation under different irrigation regimes and identified the close relation between the soil water condition and the rhizobial association. Y1 - 2013 UR - http://www.gfoe-2013.de/download/130905_GFOe_2013_Abstracts.small.pdf SP - 33 EP - 34 ER -