Sebastian Blaser - UFZ


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

Mail: sebastian.blaser@ufz.de


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).

Poster ISRR2012 (1.5 MB)