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Royal Holloway, University of London

Professor Gerhard Leubner

 

Chair of Plant Biochemistry
School of Biological Sciences
Royal Holloway, University of London
Plant Molecular Science and Centre for Systems and Synthetic Biology
Bourne Building 3-30 Egham , Surrey, TW20 0EX United Kingdom
Phone ++44-1784-44-3553
Web 'The Seed Biology Place' - www.seedbiology.eu
Email Gerhard.Leubner@rhul.ac.uk
Gerhard Leubner Summer 2011  

 

Research Interests
Seed Milestones
Publications
Academic Career
Supervised Doctoral, Diploma, Master, and 'Staatsexamen' students
Collaborations
Teaching Activities and Qualification
Talks Presented at Conferences

Hyperlink to applied seed research (University Freiburg, Germany):
ZAB (Zentrum für Angewandte Biowissenschaften)



 

Research Interests

  • Plant physiology, development and allelopathy with a special focus on plant hormones and molecular biology of seeds and seedlings.
  • All aspects of seed biology, in particular seed germination, seed dormancy, seed after-ripening, seed ecology, seed technology and seed quality.
  • Biochemical and molecular mechanisms that control embryo growth, coat-enhanced dormancy and after-ripening.
  • Seed evolution, especially with regard to the seed covering layers. Ecophysiology and evolutionary developmental biology (EVO-DEVO).
  • Phylogeny-driven comparative seed biologyprojects with interdisciplinary methods and systems biology modeling.
  • Molecular mechanisms of endosperm weakening: hydrolases, reactive oxygen species (ROS), hydrolases, and other cell-wall remodeling proteins.
  • Pathogenesis-related (PR) proteins, especially ß-1,3-glucanase (ßGlu), chitinases, peroxidases, NADPH oxidases.
  • Signal transduction pathways and gene regulation by plant hormones, temperature and light. Stress physiology and population-based threshold models.
  • Seed biomechanics and systems biology, cross-species mathematical modelling of seed germination (vSEED).
  • Seed storage, longevity and aging, basic and applied research in this area.
  • Biotechnological properties of seeds and seedlings (seed quality, enhancements, technology, priming, coating, pelleting, resistance towards seed-associated pathogens).
  • Our long term goal is to understand the molecular basis underlying seed dormancy and germination to be able to improve
    seed quality and seedling performance (vigor, timing, uniformity and environmental control of germination) of horticultural and agricuctural crops.

Selected Seed Milestones

Prolog

In members of the Solanaceae the endosperm appears to be a mechanical hindrance to seed germination. The endospermic hole of the germinated tobacco seed seems to be formed by "dissolution" rather than by "pushing" action. Class I ß-1,3-glucanase (ßGlu I) is induced just prior to endosperm rupture (after testa rupture) and is localized exclusively in the micropylar region of the endosperm where the radicle will penetrate. Transgenic seeds over-expressing ßGlu I in the seed covering layers directly demonstrate that ßGlu I promote radicle protrusion to facilitate germination by contributing to endosperm rupture of tobacco. After-ripening promotes testa rupture and releases coat dormancy. ßGlu I over-expression can replace the after-ripening effect on testa rupture, in reciprocal crosses only if the mother plant is an over-expresser.
Testa and endosperm rupture are distinct events during the germination of Nicotiana spp. seeds (Cestroideae subgroup of Solanaceae) and of the Brassicaceae species Lepidium sativum and Arabidopsis thaliana (Müller et al. 2006, Linkies et al. 2009, Graeber et al. 2010, Morris et al. 2011). We have measured endosperm weakening of Lepidium sativum by using the puncture-force method and found it to be controlled by an ABA-GA and an ABA-ethylene antagonism (working model).
Model species at different positions of the phylogenetic tree will help to unravel the evolution of the molecular mechanisms of endosperm weakening. Moving beyond Arabidopsis with cross-species work will make the Brassicaceae a model family. Brassicaceae family-wide qRT-PCR of seed germination and phylotranscriptomics require cross-species approaches (state-of-the-art cross-species qRT-PCR guideline: Graeber, Linkes, Wood, Leubner-Metzger 2011).
 

1995

Abscisic acid (ABA) delays endosperm rupture and inhibits the transcriptional induction of ßGlu I in the micropylar endosperm.
 

1996

Gibberellins (GA) can substitute for light in releasing photodormancy and induce ßGlu I in the dark in association with germination.
 

1998

Ethylene signalling pathways acting via EREBP-type transcription factors are involved in regulating ßGlu I induction and seed germination.
 

1999

ßGlu I induction is tightly linked with altered endosperm rupture in response to physiological factors known to affect the incidence and timing of seed germination.
 

2000

Sense transformation reveals a novel role for ßGlu I in tobacco seed germination.
 

2001

Brassinosteroids and gibberellins promote tobacco seed germination by distinct pathways
 

2002

Seed after-ripening and over-expression of class I ß-1,3-glucanase confer maternal effects on tobacco testa rupture and dormancy release
 

2003

Review: Functions and regulation of ß-1,3-glucanases during seed germination, dormancy release and after-ripening
and
Distinct expression patterns of ß-1,3-glucanases and chitinases during the germination of Solanaceous seeds

Cover photograph of the May 2003 issue of Plant, Cell & Environment related to the publication:
Calcium requirement for ethylene-dependent responses involving 1-aminocyclopropane-1-carboxylic acid oxidase in radicle tissues of germinated pea seeds
  Ethylene and pea seed germination

2004

ß-1,3-Glucanase gene expression in low-hydrated seeds as a mechanism for dormancy release during tobacco after-ripening

   

2005

Water uptake and distribution in germinating tobacco seeds investigated in vivo by nuclear magnetic resonance imaging (MRI)
and
Review: Plant hormone interactions during seed dormancy release and germination

2006

Endosperm-limited Brassicaceae seed germination: Abscisic acid inhibits embryo-induced endosperm weakening of Lepidium sativum (cress) and endosperm rupture of cress and Arabidopsis thaliana
and
Tansley review: Seed dormancy and the control of germination

2007 1-Aminocyclopropane-1-carboxylic acid and abscisic acid during the germination of sugar beet (Beta vulgaris L.) - a comparative study of fruits and seeds

2009 In vivo cell wall loosening by hydroxyl radicals during cress (Lepidium sativum L.) seed germination and elongation growth
and
Ethylene interacts with abscisic acid to regulate endosperm rupture during germination: a comparative approach using Lepidium sativum and Arabidopsis thaliana

2010 Cross-species approaches to seed dormancy and germination: conservation and biodiversity of ABA-regulated mechanisms and the Brassicaceae DOG1 genes
and
Tansley review: The evolution of seeds

2011 Regulation of seed germination in the close Arabidopsis relative Lepidium sativum: A global tissue specific transcript analysis
and
Darwin review: First off the mark: early seed germination
and
A guideline to family-wide comparative state-of-the-art qRT-PCR analysis exemplified with a Brassicaceae cross-species seed germination case study

Members of the gibberellin receptor gene family GID1 (GIBBERELLIN INSENSITIVE DWARF1) play distinct roles during Lepidium sativum and Arabidopsis thaliana seed germination

2012
Special Focus Issue 'Seed Biology' Plant Cell Physiology 53 (1) January 2012

Myrigalone A inhibits Lepidium sativum seed germination by interference with gibberellin metabolism and apoplastic superoxide production required for embryo extension growth and endosperm rupture

Review: Beyond gibberellins and abscisic acid: how ethylene and jasmonates control, seed germination

Dose- and tissue-specific interaction of monoterpenes with the gibberellin-mediated release of potato tuber bud dormancy, sprout growth and induction of α-amylases and β-amylases

Embryo growth, testa permeability, and endosperm weakening are major targets for the environmentally regulated inhibition of Lepidium sativum seed germination by myrigalone A

  Special Issue Seed Biology
   
 

Academic Career

Since April 2012

Chair of Plant Biochemistry, School of Biological Sciences Royal Holloway, University of London, United Kingdom
During 2012 as a transition phase my group is working at two places: Royal Holloway, University of London (RHUL) and University of Freiburg (F). Dr. Ada Linkies is leading the group in Freiburg.
Current postdocs and PhD students: Dr. Ada Linkies (F), Dr. Annette Büttner-Mainik (F), Dr. Tina Steinbrecher (RHUL), Kai Gräber (RHUL/F), Karin Weitbrecht (F), Antje Voegele (RHUL).
Main research areas: Our group has long research experience in basic and applied seed biology. The role of the seed covering layers for germination, water uptake, seed storage, after-ripening and dormancy release is an important research focus of our lab. We are interested in the molecular mechanisms of endosperm weakening and in the release of coat dormancy. The different covering layers are determinants of seed quality and exhibit the biodiversity of seed structures. We have expertise in various methods of seed and seedling technology, physiology, biochemistry and molecular biology. Our basic and applied seed research projects focus on environmental factors (light, temperature, water, abiotic stress) and on plant hormones as endogenous regulators (gibberellins, abscisic acid, ethylene, auxin, cytokinins, brassinosteroids). The utilization of plant hormones and inhibitors of their biosynthesis and action in seed treatment technologies affects seed germination and seedling emergence.
Basic research: Molecular mechanisms of endosperm weakening by hydrolases and/or reactive oxygen species (ROS). Grants by the "Deutsche Forschungsgemeinschaft" and the ERA-NET Plant Genomics (vSEED).
Applied research: Seed quality and seedling performance of ornamental and crop plant species. Collaborations with international seed companies.
Editorial Board Member: Seed Science Research, AoB Plants, Journal of Experimental Botany (Associate Editor), Planta (Review Editor)
Elected Trustee, Member of the ISSS Executive Commitee since 2011: International Society for Seed Science (ISSS)

2004-2012

Botany/Plant Physiology, Albert Ludwigs University, Freiburg i. Br., Germany
"Hochschuldozent" and independent group leader at the Institute for Biology II, Botany/Plant Physiology, Molecular Plant Sciences, Faculty Biology.
Since September 2010 "W3-Vertretungsprofessor" for Molecular Plant Physiology and Botany.
Postdocs and PhD students in 2012: Dr. Ada Linkies, Dr. Annette Büttner-Mainik, Dr. Tina Steinbrecher, Kai Gräber, Karin Weitbrecht, Antje Vögele.
Main research areas: Our group has long research experience in basic and applied seed biology. The role of the seed covering layers for germination, water uptake, seed storage, after-ripening and dormancy release is an important research focus of our lab. We are interested in the molecular mechanisms of endosperm weakening and in the release of coat dormancy. The different covering layers are determinants of seed quality and exhibit the biodiversity of seed structures. We have expertise in various methods of seed and seedling technology, physiology, biochemistry and molecular biology. Our basic and applied seed research projects focus on environmental factors (light, temperature, water, abiotic stress) and on plant hormones as endogenous regulators (gibberellins, abscisic acid, ethylene, auxin, cytokinins, brassinosteroids). The utilization of plant hormones and inhibitors of their biosynthesis and action in seed treatment technologies affects seed germination and seedling emergence.
Basic research: Molecular mechanisms of endosperm weakening by hydrolases and/or reactive oxygen species (ROS). Grants by the "Deutsche Forschungsgemeinschaft", the ERA-NET Plant Genomics (vSEED) and the "Wissenschaftliche Gesellschaft Freiburg".
Applied research: Seed quality and seedling performance of ornamental and crop plant species. Collaborations with international seed companies. These projects are part of the Plant Biotechnology section of the ZAB (Zentrum für Angewandte Biowissenschaften).
Editorial Board Member: Seed Science Research, AoB Plants, Associate Editor Journal of Experimental Botany, Reviews Editor Planta
Elected Trustee, Member of the ISSS Executive Commitee since 2011: International Society for Seed Science (ISSS)

2000-2003

Botany/Plant Physiology, Albert Ludwigs University, Freiburg i. Br., Germany
Habilitand and independent groupleader at the Institute for Biology II, Botany/Plant Physiology.
Habilitation grant of the DFG (Deutsche Forschungsgemeinschaft). Project and "Habilitationsschrift: Molekulare Physiologie der Dormanz, Nachreifung und Keimung von Pflanzensamen".
Habilitation and "Privatdozent" since the end of 2003. Venia legendi in Botany/Plant Physiology.
Member of the organizing committee of the "Botanikertagung 2002 Freiburg i. Br.", especially responsible for the internet issues of the conference and the dynamic website for the conference organization.
"Baden-Württemberg Zertifikat hochschuldidaktischer Kompetenzen".

1993-2000

Friedrich Miescher Institute, Basel, Switzerland
With Prof. Dr. F. Meins (plant development).
I established an independent research project on the function and regulation of ß-1,3-glucanases and chitinases (PR-proteins) during plant development. Special focus on seed dormancy and germination of tobacco, tomato and pea. Regulation of PR gene expression and signal transduction by hormones and environmental factors.
Education in webdesign and internet technologies - Certificate WebPublisher SIZ® ("Schweizerisches Informatikzertifikat").

1991-1992

Cornell University, Ithaca, New York, USA
With Prof. Dr. O. C. Yoder (plant pathology).
Project on the molecular biology of the mating type genes of Cochliobolus heterostrophus, fungal pathogen of maize.
Postdoctoral fellowship granted by the DFG (Deutsche Forschungsgemeinschaft).

1986-1990

Doctoral work (Ph.D.)
Ruhr-University Bochum, Germany
Swiss Federal Institute of Technology (ETH) Zürich, Switzerland
With Prof. Dr. N. Amrhein (plant physiology & biochemistry).
Thesis "The role of hydroxycinnamoylputrescines in the tuberization process of potato plants".

1985-1986

Diploma work at the Ruhr-University Bochum, Germany.
With Prof. Dr. N. Amrhein (plant physiology & biochemistry).
Thesis "Phenylalanine-analogues as inhibitors of L-phenylalanine-tRNA synthetase".

1980-1986

Study of biology at the Ruhr-University Bochum, Germany.

 

Supervised Doctoral, Diploma, Master, Bachelor and 'Staatsexamen' students

  • Jahreszahl ist bei beendeten experimentellen Arbeiten das Jahr der Abgabe:
  • 2006 Kerstin Müller, Diplomarbeit "Endosperm weakening bei Lepidium sativum"
  • 2007 Karin Weitbrecht, Diplomarbeit "Weinrebe-Pathogen Interaktion" (in collaboration with Hanns-Heinz Kassemeyer)
  • 2007 Meike Wenk, Diplomarbeit "Ethylen und Samenkeimung"
  • 2007 Uta Schuster, Diplomarbeit "Samenperoxidasen"
  • 2008 Tina Carstens, Diplomarbeit "Induzierbare Promotoren in der Samenkeimung"
  • 2008 Sonja Rentzsch, Staatsexamensarbeit (Labor) "Amylase in Weizenkörnern" - Preis für die beste Staatsexamensarbeit der Fakultät 2009
  • 2008 Dagmara Podzimska, Masterarbeit, Sokrates/Erasmus Poland "Potato tuber sprouting"
  • 2008 Kai Gräber, Diplomarbeit "Lepidium DOG1-vermittelte Samendormanz" - Preis für eine der drei besten Diplomarbeiten der Fakultät 2010
  • 2009 Lydia Buller, Staatsexamensarbeit (Labor) "Lepidium DOG1-Genklonierung"
  • 2009 Barbara Wippermann, externe ESBS-Masterarbeit "Terpenstoffwechsel"
  • 2009 Anita Rott, Diplomarbeit "Nachreifung und Stressphysiologie von Samen"
  • 2009 Antje Schulz, Diplomarbeit "GA-Signaltransduktion und Samenkeimung"
  • 2010 Dominique Jacquemoud, Masterarbeit, internship from Lyon "Seed allelopathy"
  • 2010 Linda Kern, Diplomarbeit "Powdery mildew - Grapevine interaction" (in collaboration with Hanns-Heinz Kassemeyer)
  • 2011 Claudia Scheler, Diplomarbeit "Pectin and seed germination"
  • 2011 Johannes Lörcher, Staatsexamensarbeit (Labor) "RT-qPCR, transformation and cress seed germination"
  • 2011 Maren Siegrist, Staatsexamensarbeit Labor "Lepidium seed dormancy"
  • 2011 Sophie Berckhan, Bachelorarbeit "Hormone receptors in Lepidium endosperm weakening"
  • 2011 Janina Hitzfeld, Staatsexamensarbeit (Literaturarbeit) "Biofortification"
  • 2011 Katrin Biermann, Diplomarbeit "Hormonal interactions in Lepidium endosperm weakening"
  • 2011 Andrea Freund, Bachelorarbeit "Hormonal interactions in Lepidium seed germination"

  • 2006-2009 Kerstin Müller, Doktorarbeit (DFG LE720/6)
    "Reactive oxygen species play a positive role in seed germination and after-ripening"
    Phinished with overall score: very good 'mit Auszeichnung' (summa cum laude)

  • 2006-2010 Ada Linkies, Doktorarbeit (DFG LE720/6)
    "A comparative Brassicaceae approach with Lepidium sativum and Arabidopsis thaliana to investigate mechanisms of seed germination and endosperm weakening"
    Phinished with overall score: very good
    PhD thesis itself: very good 'mit Auszeichnung' (summa cum laude)

  • Since 2009 Kai Gräber, Doktorarbeit (DFG LE720/7)
    Bioiversity of Brassicaceae seed dormancy and DOG1 gene evolution

  • Since 2009 Karin Weitbrecht, Doktorarbeit (DFG LE720/8, ERA-NET PG vSEED)
    Seed biomechanics, transcriptome and cross-species germination in vSEED

  • Since 2010 Antje Voegele, Doktorarbeit (DFG LE720/6 and DFG LE720/7)
    Hormonal interactions in Brassicaceae dormancy and germination


Collaborations

  • Prof. Bill Finch-Savage and Dr. Karl Morris
    Seed Science Group, Warwick HRI, University of Warwick, UK
    Transcriptome analyses and reverse genetics of Brassicaceae seeds

  • Prof. Klaus Mummenhoff
    Department of Systematic Botany, University of Osnabrück, Germany
    Plant evolutionary biology and ecophysiology, Cross-species Brassicaceae EVO-DEVO research

  • Prof. Charles Knight
    Cal Poly Biological Science Department, California Polytechnic State University, San Luis Obispo,USA
    Plant evolutionary biology and ecophysiology, Cross-species Brassicaceae EVO-DEVO research

  • Prof. Mike Holdsworth
    School of Biosciences, University of Nottingham, UK
    ERA-NET Plant Genomics vSEED

  • Prof. John King and Prof. Andy Wood
    School of Mathematical Sciences, University of Nottingham, UK
    ERA-NET Plant Genomics vSEED

  • Dr. Nicola Everitt
    School of Mechanical, Materials and Manufacturing Engineering, University of Nottingham, UK
    ERA-NET Plant Genomics vSEED

  • Prof. Paul Knox
    Paul Knox Cell Wall Lab, University of Leeds, UK
    ERA-NET Plant Genomics vSEED

  • Dr. Leonie Bentsink
    Utrecht and Wageningen University, The Netherlands
    ERA-NET Plant Genomics vSEED

  • Dr. Ilse Kranner and Prof. Hugh Pritchard
    Seed Conservation Department, Royal Botanik Gardens Kew, Wakehurst Place, UK
    Reactive oxygen species in seed biology

  • Prof. Stefania Scippa and Elisa Petrollini
    Germoplasm Bank University of Molise, Italy
    Seed dormancy and germination

  • Dr. Radomira Vankova, Prof. Miroslav Strnad, Dr. Veronika Turecková
    Institute of Experimental Botany, Prasgue and Olomouc, Czech Republic
    Seed hormone analyses

  • Prof. Stephen Fry and Dr. Robert Vreeburg
    The Edinburgh Cell Wall Group, The University of Edinburgh, UK
    Reactive oxygen species during seed germination of Brassicaceae

  • Prof. Xiaofeng Wang
    College of Life Sciences, South China Agricultural University, P. R. China
    Endosperm hydrolases during seed germination

  • Prof. Christophe Bailly and Prof. Francoise Corbineau
    Université Pierre et Marie Curie, Paris, France
    Reactive oxygen species in seed biology

  • Prof. Maarten Koornneef and Dr. Wim Soppe
    Max Planck Institute for Plant Breeding Research, Köln, Germany
    Brassicaceae seed dormancy mechanisms

  • Dr. Uwe Fischer and Dr. Juliane Meinhard
    KWS SAAT AG, Einbeck, Germany
    Sugar beet germination

  • Dr. Dominique Job and Dr. Claudette Job
    Arabidopsis Seed Proteome, CNRS / Bayer CropScience Joint Laboratory, Lyon, France
    Proteome analyses and reverse genetics of Brassicaceae seeds

  • Dr. Miguel Angel Torres
    University of North Carolina, Chapel Hill, USA
    Reactive oxygen species during seed germination of Brassicaceae

  • Dr. Hanns-Heinz Kassemeyer
    Staatliches Weinbauinstitut Freiburg, Fachbereich Pflanzenschutz, Germany
    Grape vine pathogen defence against Plasmopara viticola

  • PD Dr. Andreas Börner
    IPK Gatersleben, Genebank, Germany
    Amylases gene expression in cereal grains of hormone mutants

  • PD Dr. Anja Liszkay
    Service de Bioenergetique, CNRS, CEA Saclay, Gif-sur-Yvette, France
    Reactive oxygen species during seed germination and seedling growth

  • Prof. em. Peter Schopfer
    Albert-Ludwigs-Universität Freiburg, Germany
    Reactive oxygen species during seed germination and seedling growth

  • Prof Dolores Rodriguez and Dr. Oscar Lorenzo
    Department of Plant Physiology, University of Salamanca, Spain
    Reactive oxygen species in seed biology

  • Prof. Hiro Nonogaki
    Integrative Seed Biology, Oregon State University Corvalis, USA
    Transcription factors in the micropylar endosperm of Brassicaceae

  • Prof. Kent J. Bradford
    Department of Vegetable Crops and Director Seed Biotechnology Center, University of California, Davis, USA
    ß-1,3-Glucanase, Chitinase and seed germination of tomato

  • PD Dr. Frank Volke and Dr. B. Manz
    Arbeitsgruppe Magnetische Resonanz, Fraunhofer Institut für Biomedizinische Technik (IBMT), St. Ingbert/Saar, Germany
    NMR analyses during seed germination, NMR microimaging of seed imbibition

  • Seed industry
    Seed germination and seedling growth of ornamental and crop species, collaborations with two international seed companies.


Teaching Activities and Qualification

Hyperlink to my teaching website (University Freiburg until March 2012):
"The Plant Biology Place" - http://www.plantbiology.de
  • "Baden-Württemberg Zertifikat hochschuldidaktischer Kompetenzen"
    Official university teaching qualification and certificate HDZ, October 2003.
    Educational courses in university teaching aspects, including computer-based learning courses in Basel and Freiburg.
    Modul III-work "Blended learning", focus on computer- and web-based learning technologies that support my university teaching.

  • University teaching website "The Plant Biology Place" - http://www.plantbiology.de
    Web support for my teaching activities at the University Freiburg ("blended-learning" concept).

  • "Certificate WebPublisher SIZ" (Swiss certificate in Webpublishing)
    Training in Webdesign, Webpublishing and internet-based computer-technologies.
    Half-year study at the WISS (Wirtschaftsinformatikschule Schweiz) college in Basel, official Swiss certificate 2000.

  • Several teaching awards based on student evaluation for the basic lecture and the practical course in plant physiology.

  • "Hochschuldozent" at the University of Freiburg
    Supervision of technicians, postdocs, diploma and Ph.D. students. Lectures in English and German.
    Web-based support of lectures by using computer-based learning techniques.

  • Oberseminar "Samenkeimung und Saatgutqualität: Molekulare und biotechnologische Aspekte von Pflanzensamen"
    for advanced students and Ph.D. students, University of Freiburg (yearly since 2010), together with Dr. Ada Linkies
    Course information: http://www.plantbiology.de

  • Oberseminar "Aspects of applied plant physiology: molecular biology and physiology of hormones"
    for advanced students and Ph.D. students, University of Freiburg (yearly since 2001), togetherwith Dr. Olaf Tietz
    Course information: http://www.plantbiology.de and "Kommentiertes Vorlesungsverzeichnis"

  • Obligatory Module "Physiology" Bachelor of Science Biologie
    Module management: PD Dr. Gerhard Leubner (Plant Physiology) and Dr. Vitus Oberhauser (Animal Physiology)

  • Basic lecture "Plant physiology"
    together with Prof. Eberhard Schäfer, for biology students in the 3rd semester, University of Freiburg (yearly since 2004)
    Lecture information: http://www.plantbiology.de

  • Basic practical course "Plant physiology"
    Course coordinator, lecturer and organizator, obligatory for biology students in the 3rd semester (4 courses each with ca. 45 students), University of Freiburg (yearly since 2001)
    Course information: "Kommentiertes Vorlesungsverzeichnis"

    Advanced lecture "Molecular plant physiology" (Ringvorlesung)
    together with others, for advanced biology students and PhD students, University of Freiburg (yearly since 2005)

  • Practical course "Plant biotechnology"
    for advanved students of the Trinational Study of Biotechnology, University Freiburg and ESBS Strasbourg, France (yearly since 2005)

  • Lecture "Plant physiology"
    togeher with Prof. Ralf Reski, for advanved students of the Trinational Study of Biotechnology, ESBS Strasbourg, France (yearly since 2005)
    Lecture information: http://www.plantbiology.de
     
  • "Grosspraktikum": Lab course "Molecular seed physiology" for advanced students
    University of Freiburg (yearly since 2001)
    Information: http://www.plantbiology.de

    Some earlier teaching activities at the University of Basel:

  • Lecture " The plant hormone system - physiology and molecular biology"
    for advanced students, University of Basel (1997-1999; shared equally with Dr. Jürg Oetiker)

  • Lecture "Seeds – structure, food reserves, dormancy, and germination"
    for advanced students, University of Basel (1993).


Selected Talks Presented at International and National Conferences


  • Botanikertagung 'Diversity makes the difference', September 2011, Berlin, Germany. Chair and organisator of the Workshop 'Seed Biology'
    Oral presentation together with Dr. Ada Linkies "Multilevel cross-species approaches to identify evolutionary conserved and diverse mechanisms that control seed dormancy and germination"

  • 25. Getreide-Tagung der deutschen Arbeitsgemeinschaft Getreideforschung e.V. (www.agfdt.de), March 2011, Detmold, Germany.
    Eingeladener Hauptvortrag "Physiologische Grundlagen der Keimruhe und Bedeutung für die Fallzahl von Getreide".

  • DanSeed Symposium 2011 of the Danish Seed Industry and the Faculty of Agricultural Sciences, Aarhus University, March 2011, Slagese, Denmark.
    Invited lead speaker "Computer modeling of seed germination" about vSEED as an example for an Europaen Seed Systems Biology Network project.

  • Science meets Business Day: "Erfolgreiche Kooperationen aus Wirtschaft und Wissenschaft", Konzerthaus Freiburg, 23. Nov. 2010
    Tandem-Vortrag gemeinsam mit Dr. Uwe Fischer (KWS Saat AG, Einbeck, Germany):
    "Gene, Hormone und Stress bei der Samenkeimung und was das mit der Saatgutqualität der Zuckerrübe zu tun hat".

  • 29th ISTA (International Seed Testing Association) Congress, June 2010, Köln, Germany.
    Invited Lead Speaker and chairman of the basic research session "Basic approaches to physiological processes in seeds" (ISSS collaborative session).
    My keynote: "Comparative seed biology will lead the way: Evolutionary conservation and biodiversity of physiological mechanisms that control germination".
    Oral presentation by Dr. Ada Linkies "The combined use of Arabidopsis thaliana and Lepidium sativum to find conserved mechanisms of seed germination within the Brassicaceae family".
    The ISTA is the most important international organization for seed testing and applied seed research.

  • 3rd ISSS Workshop on the Molecular Aspects of Seed Dormancy and Germination, July 2010, York, UK.
    Session Chair. Oral presentations by several group members:
    Antje Voegele "GID1 gene family members fulfill distinct regulatory functions during seed germination".
    Dr. Ada Linkies "Superior housekeeping genes for state-of-the-art qPCR normalization during seed germination obtained by tissue-specific transcriptome analysis and cross-species comparison".
    Kai Gräber "Cross-species investigations on the DOG1 seed dormancy gene - evidence for an evolutionary conserved mechanism".
    The International Society for Seed Science (ISSS) is the most important international organization for all aspects of basic seed research.

  • SEST2009 - 5th International Symposium on "Seed, Transplant and Stand Establishment of Horticultural Crops: Integrating Methods for Producing More with Less.", Sept./Oct. 2009, Murcia - Almeria, Spain.
    Invited Lead Speaker Session 9 "The 'virtual Seed' project: Integrating comparative seed biology, biomechanical modeling, and functional genomics." and member of the scientific committee.
    Oral presentation by Dr. Ada Linkies "A combined approach with the brassicaceae species Arabidopsis thaliana and Lepidium sativum to identify key genes controlling seed germination".

  • 4th International Symposium Plant Dormancy, Juni 2009, Fargo, North Dakota, USA.
    Invited Lead Speaker ISSS-Minisymposium "Cross-species approaches to seed dormancy and germination: Evolutionary conservation and biodiversity of mechanisms".
    Oral presentation by Kai Gräber "Seed dormancy in the genus Lepidium (Brassicaceae) and the distribution of the dormancy gene DOG1".

  • Syngenta Global Seed Care Institute (SCI) Seed Science Symposium, October 2008, Basel and Stein, Switzerland.
    Invited Lead Speaker "Comparative seed physiology: How hormones, genes, biomechanics and climate change interact to control germination".

  • 9th ISSS (International Seed Science Society) Workshop on Seed Biology, June 2008, Olsztyn, Poland.
    Member of the scientific committee and chairman. Oral presentations by several group members:
    Ada Linkies "A reverse genetics approach to endosperm weakening by using Brassicaceae relatives"
    Kerstin Müller "Hydroxyl radicals and in vivo scission of cress seed cell walls". Awarded as the best student presentation.
    The ISSS workshop is the most important international conference on basic seed research.

  • Workshop "Sleeping Beauties - Dormancy and resistance in harsh environments: Molecular, proteomic and metabolomic aspects", May 2008, MPI Dahlem-Berlin, Germany.
    Oral presentation "Seed awakening mechanisms: Dormancy release, after-ripening and germination".

  • Gemeinsame Vortragstagung "Klimawandel als Herausforderung: Entwicklung und Nutzung stresstoleranter Sorten für Nahrung und Energie" der Arbeitsgemeinschaften Ertrags- und Stressphysiologie, Saatgut- und Sortenwesen sowie Getreide der Gesellschaft für Pflanzenzüchtung e.V. (GPZ) und der Gesellschaft für Pflanzenbauwissenschaften e.V., Oktober 2007, Halle a.d. Saale, Germany.
    Vortrag "Samendormanz und Keimungskontrolle: Gene, Umweltfaktoren und Klimawandel".

  • 2nd Workshop on Molecular Aspects of Seed Dormancy and Germination, July 2007, Salamanca, Spain.
    Invited plenum talk: "Seed dormancy and the control of germination". Session chairman.

  • 8th International Workshop on Seeds, May 2005, Brisbane, Australia
    Oral presentation "Emerging and established model systems for endosperm weakening"

  • 3rd International Symposium on Plant Dormancy, May 2004, Wageningen University, The Netherlands
    Oral presentation "Gene expression in low-hydrated tobacco seeds as a mechanism for after-ripening and dormancy release"

  • 9th International Symposium on Plant Seeds / The 7th Gatersleben Research Conference "Seeds in the 'omics Era", May 2004, Gatersleben / Chateau Meisdorf, Germany.
    Oral presentation "Gene expression in low-hydrated tobacco seeds as a mechanism for after-ripening and dormancy release".

  • 17. Tagung "Molekularbiologie der Pflanzen", März 2004, Dabringhausen, Germany
    Vortrag "Molekulare Biologie der Dormanzbrechung und Keimung endospermhaltiger Samen"

  • Workshop "Zukunft der Saatgutforschung bei Gartenbaulichen Kulturpflanzen", Oktober 2002, Institut für Gemüse- und Zierpflanzenbau Grossbeeren/Erfurt, Germany
    Eingeladener Hauptredner mit Vortrag "Neue Erkenntnisse der Samenbiologie zur Saatgutqualität"

  • 7th International Workshop on Seeds, May 2002, Salamanca, Spain
    Invited main speaker of the session "Seed Dormancy and Germination"
    Oral presentation "Hormonal and molecular events during seed dormancy release and germination"

  • 1st International Congress on Stress Tolerance in Seeds - Genetic, Molecular and Physiological Mechanisms, April 2001, Wageningen, The Netherlands
    Oral presentation "Brassinosteroids and gibberellins promote tobacco seed germination by distinct pathways"

  • 8th International Symposium on Plant Seeds / The 5th Gatersleben Research Conference “Seed Development, Metabolism and Biotechnology”, August 2000, Gatersleben / Chateau Meisdorf, Germany
    Oral presentation “Sense and antisense transformation reveals novel roles for ß-1,3-glucanase in afterripening, photodormancy and seed germination”

  • 10th FESPP Congress "From Molecular Mechanisms to the Plant: An Integrated Approach", September 1996, Firenze, Italy,
    Oral presentation "Effects of Plant Hormones on Endosperm Rupture and Class I ß-1,3-Glucanase Induction in Tobacco Seed Germination."

  • Invited speaker at the second platform meeting of the EC Concerted Action Program on "Integration of Physiological and Molecular Disciplines in Seed Quality Analysis", September 1996, Milano, Italy

  • 4th International Workshop on Pathogenesis-Related Proteins in Plants: Biology and Biotechnological Potential, September 1995, Schwäbisches Bildungszentrum Kloster Irsee, Irsee, Germany
    Oral presentation "Evidence for a Role of ß-1,3-Glucanase in Dicot Seed Germination."

  • 15th International Conference on Plant Growth Substances, July 1995, Minneapolis, Minnesota, USA
    Oral presentation "Evidence for a Role of ß-1,3-Glucanase in Dicot Seed Germination."


 
 


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