Foto: J. Nietsch
Foto: J. Nietsch
Crop Genetic Systems
Crop Genetic Systems

Your contact for research and development

Benefit from our years of experience and our professional and reliable operation. Crop Genetic Systems can help you to find solutions to your research question. Please contact us.

Our Teamleader

Dr. Dirk Becker

Foto: J. Nietsch
  • was born in 1963.


  • is working in the field of biotechnology 25 years.


  • was instrumental in the breakthrough in the cereal transformation in the 90s.


  • has extensive experience in project management and leadership from his many years of work as a group leader.


  • has valuable experience in the establishment of transformation systems, in particular in cereals, but also in dicotyledonous plants such as rape, in the in vitro culture and molecular analysis.


Dr. Julia Neß-Nietsch

Bild: D. Becker
  • was born in 1976.


  • has relevant experience in isolation and molecular analysis of genes. 


  • possesses expertise in Agrobacterium-mediated and biolistic transformation of mono- and dicotyledonous plants. 


  • has expertise in isolation, transformation and in vitro culture of protoplasts.

Publication list

  • Nietsch J, Brügmann T, Becker D, Fladung M (2017) Old methods rediscovered: application and improvement of two direct transformation methods to hybrid poplar (Populus tremula × P. alba). Plant Cell Tiss Org Cult 130:183–196


  • Rana, I.A., Salomon, S., Schäfer, W. and Becker, D. (2014). Downregulation of Glucan Synthase-Like (TaGSL) genes in wheat leads to inhibition of transgenic plant regeneration. In Vitro Cell.Dev.Biol.


  • Woriedh, M., Wolf, S., Márton, M.L., Hinze, A., Gahrtz, M., Becker, D., Dresselhaus, T. (2013). External application of gametophyte-specific ZmPMEI1 induces pollen tube burst in maize. Plant Reprod. 2013 Sep;26(3):255-66. 


  • Becker, D, Wieser, H, Koehler, P, Folck, A, Mühling, KH, Zoerb, C. Protein composition and techno-functional properties of transgenic wheat with reduced α-gliadin content by RNA interference. J. Applied Botany and Food Quality 85, 23-33 (2012)


  • Axel Hinze, Dirk Becker. Next generation biotechnology: how sophisticated constructs lead to further insights and new approaches towards biotechnology’s demands. iForest – Biogeosciences and Forestry, (2012)


  • Nadja Schmidt , Matthias Merker and Dirk Becker. Novel high-throughput RNAi vectors for plant biotechnology. Plant Breeding, (2012)


  • Linus Moses Kosambo-Ayoo, Maram Bader, Horst Loerz and Dirk Becker. Transgenic sorghum (Sorghum bicolor L. Moench) developed by transformation with chitinase and chitosanase genes from Trichoderma harzianum expresses tolerance to anthracnose African Journal of Biotechnology Vol. 10(19), pp. 3659-3670, 9 May, 2011


  • Murali R. Rao, Hong S. Moon, Tobias M. H. Schenk, Dirk Becker, Mitra Mazarei and C. Neal Stewart, Jr . FLP/FRT Recombination from Yeast: Application of a Two Gene Cassette Scheme as an Inducible System in Plants. Sensors 2010, 10, 8526-8535


  • Fladung, M. and Becker, D. (2009). Targeted integration and removal of transgenes in hybrid aspen (Populus tremula L. x P. tremuloides Michx.) using site-specific recombination systems. Plant Biology 


  • Fladung, M., Schenk, T. M. H., Polak, O. and Becker, D. (2009). Elimination of marker genes and targeted integration via FLP/FRT recombination system from yeast in hybrid aspen (Populus tremula L. × P. tremuloides Michx.). Tree Genetics & Genomes


  • Shrawat, A.K., Becker, D. and Lörz, H. (2007) Agrobacterium tumefaciens-mediated genetic transformation of barley (Hordeum vulgare L.). Plant Science 172, 281-290


  • Kumlehn, J., Serazetdinova, L. Hensel, G, Becker, D., Lörz, H. (2006)
    Genetic transformation of barley (Hordeum vulgare L.) via infection of androgenetic pollen cultures with Agrobacterium tumefaciens.
    Plant Biotechnology Journal. 4, pp.251-261.


  • Stival da Silva, A.L., Sperling, P., Horst, W., Franke, St., Ott, C., Becker, D., Staß, A., Lörz, H., Heinz, E. (2006) A possible role of sphingolipids the aluminum resistance of yeast and maize. J. Plant Physiol. 163:26-38


  • Kerbach S., Lörz, H. and Becker, D. (2005) Site-specific recombination in Zea mays. Theor. Appl. Genet. 2005 Nov;111(8):1608-16. 


  • Sahrawat, A.K., Becker, D., Lütticke S., Lörz, H. (2003)
    Genetic improvement of wheat via alien gene transfer, an assessment.
    Plant Science 165:1147-1168.


  • Kumlehn, J., Serazetdinova, L., Becker, D., Lörz, H. (2002)
    Agrobacterium-mediated transformation of barley pollen cultures.
    In: "Plant Biotechnology 2002 and Beyond" Indra K. Vasil (ed.). Kluwer Academic Publishers, Netherlands, pp. 545-547.


  • Kluth A, Sprunck S, Becker D, Lörz H, Lütticke S. (2002) 5' deletion of a gbss1 promoter region from wheat leads to changes in tissue and developmental specificities. Plant Mol Biol. 2002 Aug;49(6):669-82. 


  • Xu ZQ, Becker D, Lörz H. (2001). Effects of the physical configuration of plasmid DNA and other factors on production of fertile transgenic wheat plants. Shi Yan Sheng Wu Xue Bao. , Sep;34(3):183-9.


  • Oldach, K.H., Becker, D., Lörz, H. (2001) Heterologous expression of genes mediating enchanced fungal resistance in transgenic wheat. MPMI 14:832-838.


  • Orlov, P.A., Becker, D., Schewe, G., Lörz, H. (1999)
    Cytoplasmic effects on pollen embryogenesis induction in wheat microspore culture. Cereal Research Communications 27:357-363.


  • Lörz, H., Becker, D., Lütticke, S. (1997)
    Molecular wheat breeding by direct gene transfer.
    In: "Wheat: Prospects for Global Improvement", H.-J. Braun et al. (eds.), Kluwer Academic Publ. Dordrecht, pp. 293-297 und
    (1998) Euphytica 100:219-223.


  • Brettschneider, R., Becker, D., Lörz, H. (1997)
    Efficient transformation of scutellar tissue of immature maize embryos.
    Theor. Appl. Genet. 94:737-748.


  • Pedersen, C., Zimny, J., Becker, D., Jähne-Gärtner, A., Lörz, H. (1997)
    Localization of introduced genes on the chromosomes of transgenic barley, wheat and triticale by fluorescence in situ hybridization.
    Theor. Appl. Genet. 94:749-757.


  • Becker, D., Lörz, H. (1996)
    Production of fertile transgenic wheat by microprojectile bombardment.
    In: "Plant Tissue Cuture Manual", K. Lindsey (ed.), Kluwer Acad. Publ., Dordrecht NL, B.12:1-20.


  • Lütticke, S., Becker, D., Brettschneider, R., Jähne, A., Lörz, H. (1995)
    Genetic modification of cereal crops by direct gene transfer.
    In: "Proceedings FAO/IAEA International Symposium on the use of induced mutations and molecular techniques for crop improvement", IAEA, Vienna, pp. 389-397.


  • Becker D., Jähne, A., Zimny, J., Lütticke, S., Lörz, H. (1995)
    Production of transgenic cereal crops.
    In: "Current Issues in Plant Molecular and Cellular Biology", M. Terzi et al. (eds.), Kluwer Academic Publ., Dordrecht, pp. 263-269.


  • Jähne, A., Becker, D., Lörz, H. (1995) Genetic engineering of cereal crop plants: a review. Euphytica 85:35-44.


  • Zimny J., Becker, D., Brettschneider, R., Lörz,H. (1995) Fertile, transgenic Triticale (xTriticosecale Wittmark). Mol. Breeding 1:155-164.


  • Jähne, A., Becker D., Brettschneider, R., Lörz, H. (1994)
    Regeneration of transgenic, microspore-derived, fertile barley.
    Theor. Appl. Genet. 89:525-533.


  • Barcelo, P., Hagel, C., Becker, D., Martin, A., Lörz, H. (1994) Transgenic cereal (tritordeum) plants obtained at high efficiency by microprojectile bombardment of inflorescence tissue. The Plant Journal 5:583-592.


  • Becker, D., Brettschneider, R., Lörz, H. (1994) Fertile transgenic wheat from microprojectile bombardment of scutellar tissue. The Plant Journal 5:299-307.

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