Dr. rer. nat. Sebastian Blaser
Research associate
Contact:
Helmholtz Centre for Environmental Research
Department of soil system science
Theodor-Lieser-Straße 4
D-06120 Halle (Saale)
Phone: +49 345 558-5419
Fax: +49 345 558-5559
Education and employment history:
since 02/2019
CT-scientist in the framework of the DFG priority programme 2089 "Rhizosphere Spatiotemporal Organisation - a Key to Rhizosphere Functions"
01/2014 - 07/2018
Research assistant / PhD student in the working group Soil-Plant-Interaction. Topic: “Potential of visualisation methods for the in-situ investigation of roots – reaction of root growth to different N-forms”
05/2013 - 12/2013
Student assistant at the Martin-Luther-University of Halle-Wittenberg & guest scientist at the Helmholtz Centre of Environmental Research
11/2012 - 04/2013
Research assistant in the working group Soil-Plant-Interaction
04/2011 - 11/2012
Master's degree candidate in the working group Soil-Plant-Interaction. Topic: „Computer tomographic and chemical characterisation of biopores and their relevance for root growth and function“
10/2009 - 11/2012
MSc-student in the programme "Management of natural resources" at the Martin-Luther-University of Halle-Wittenberg
10/2006 - 11/2009
BSc-student in the programme "Management of natural resources" at the Martin-Luther-University of Halle-Wittenberg
06/2006
A-level at the "Geschwister-Scholl" High School in Röthenbach a.d. Pegnitz, Germany
Research focuses:
- Influence of different N-supply and fertilizer placement on root growth and plant development
- Morpholgy and chemistry of biopores and their influence on root growth and nutrient supply of plants
- Root growth in soil
- Visualization and characterization of biopores and roots in soil by X-ray tomography (µCT)
- Digital microscopy (especially root cross sections)
- Determination and analysis of the 3-phase contact angles in the 3D space based on CT images
Publications and conference contributions:
2021
Blaser SRGA, Koebernick N, Schlüter S, Vetterlein D. 2021. The 3-D Imaging of Roots Growing in Soil. In: The Root Systems in Sustainable Agricultural Intensification (Ed.: Rengel Z & Djalovic I). Wiley & Sons. https://doi.org/10.1002/9781119525417.ch13
Lippold E, Kleinau P, Blaser SRGA, Schlüter S, Phalempin M, Vetterlein D. 2021. In soil measurement of radiation dose caused by X-ray computed tomography. JPNSS. https://doi.org/10.1002/jpln.202000276
2020
Blaser SRGA, Koebernick N, Spott O, Thiel E, Vetterlein D. 2020. Dynamics of localised nitrogen supply and relevance for root growth of Vicia faba (‘Fuego’) and Hordeum vulgare (‘Marthe’) in soil. Scientific reports. https://www.nature.com/articles/s41598-020-72140-1
Blaser SRGA. 2020. Dissertation at the Martin-Luther-University Halle-Wittenberg. Potential of imaging techniques for in-situ investigation of roots - root growth response to different N-forms in soil. 166 pp. http://dx.doi.org/10.25673/36266
Lohse M, Blaser SRGA, Vetterlein D, Schlüter S, Oburger E, Reemtsma T, Lechtenfeld O. 2020. Online Nano Solid Phase Extraction Fourier-Transform Ion Cyclotron Resonance Mass Spectrometry Workflow to Analyze Small Scale Gradients of Soil Solution Organic Matter in the Rhizosphere. Analytical Chemistry. https://doi.org/10.1021/acs.analchem.0c00946
2019
Gao W, Blaser SRGA, Schlüter S, Shen J, Vetterlein Doris. 2019. Effect of localised phosphorus application on root growth and soil nutrient dynamics in situ – comparison of maize (Zea mays) and faba bean (Vicia faba) at the seedling stage. Plant and Soil. https://link.springer.com/article/10.1007/s11104-019-04138-2
Gao W, Schlüter S, Blaser SRGA, Shen J, Vetterlein Doris. 2019. A shape-based method for automatic and rapid segmentation of roots in soil from X-ray computed tomography images: Rootine. Plant and Soil. https://link.springer.com/article/10.1007/s11104-019-04053-6
2018
Blaser SRGA, Schlüter S, Vetterlein D. 2018. How much is too much?—Influence of X-ray dose on root growth of faba bean (Vicia faba) and barley (Hordeum vulgare). PLOS One. http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0193669
Blaser SRGA, Vetterlein D. 2018: Dynamics of Nitrogen Species in Soil and their Relevance for Root System Morphology – What Have We Learned from Drew? Poster presentation at the Bonares conference 2018 in Berlin (Germany).
Poster_Blaser-BonaRes2018 (2.4 MB)
2017
Blaser SRGA, Thiel E, Vetterlein D. 2017: Dynamik der Stickstoffspezies im Boden und ihre Bedeutung für die Wurzelmorphologie – was haben wir von Drew gelernt? Presentation at the annual conference of the DBG in Göttingen (Germany).
Blaser SRGA, Thiel E, Vetterlein D. 2017: Dynamics of localised supply of nitrogen-species in soil and their relevance for root system morphology – what have we learned from Drew? Presentation at the international conference IPNC 2017 in Copenhagen (Denmark).
2016
Blaser SRGA, Vetterlein D. 2016: Combination of X-ray micro tomography and soil solution studies to analyse root system development and soil chemistry in situ as a response to different N-forms. Presentation at the international conference of the German Society of Plant Nutrition (DGP) "Plant nutrition 2016 - Ressource efficiency: from model plants to crops and crop systems" 2016 in Stuttgart-Hohenheim (Germany).
2015
Blaser SRGA, Thiel E, Vetterlein D. 2015: Combination of X-ray micro tomography and soil solution studies to analyse root system development and soil chemistry in situ as a response to different N-forms. Presentation at the Doctoral Researcher's Conference of the University of Hannover in Goslar (Germany).
Blaser SRGA, Thiel E, Vetterlein D. 2015: Combination of X-ray micro tomography and soil solution studies to analyse root syste development and soil chemistry in situ as a response to different N-forms. Presentation at the annual conference of the DBG in Munich (Germany).
Blaser SRGA, Thiel E, Vetterlein D. 2015: Combination of X-ray micro tomography and soil solution studies to analyse root system development and soil chemistry in situ as a response to different N-forms. Poster and oral presentation at the international conference "Rhizosphere4" in Maastricht (The Netherlands).
Poster_Blaser_Rhizosphere4.pdf (2 MB)
2014
Blaser SRGA, Thiel E, Vogel H-J, Vetterlein D. 2014: Influence of different urea-based fertilizer granules in soil on root system development, soil chemistry and plant growth under controlled conditions. Poster presentation at the international conference of the German Society of Plant Nutrition (DGP) "Plant nutrition 2014 - from basic understanding to better crops" 2014 in Halle (Germany).
Poster_Blaser_DGP2014.pdf
2013
Blaser S, Vetterlein D, Jahn R, Kaiser K, Kühn T, Vogel H-J. 2013: Is the soil profile mirrored in biopore profiles? Plenary Talk at the international IUSS conference 2013 in Ulm (Germany).
Blaser S, Vetterlein D, Jahn R, Kaiser K, Kühn T, Vogel H-J. 2013: Ist das Bioporenprofil ein Spiegelbild des Bodenprofils? Presentation at the annual conference of the DBG 2013 in Rostock (Germany).
Blaser S, Vetterlein D, Jahn R, Kaiser K, Kühn T, Vogel H-J. 2013: Is the soil profile mirrored in biopore profiles? Presentation at the international conference "Biohydrology" 2013 in Landau (Germany).
2012
Carminati A, Vetterlein D, Koebernick N, Blaser S, Weller U, Vogel H-J. 2012: Do roots mind the gap? Plant and Soil. http://dx.doi.org/10.1007/s11104-012-1496-9
Blaser S, Vetterlein D, Koebernick N, Weller U, Jahn R, Vogel H-J. 2012: CT-assisted analysis of biopores and their influence on root growth and root dynamics. Poster presentation at the international ISRR conference 2012 in Dundee (Scotland).