Inhaltspezifische Aktionen

Schießl-Weidenweber, Sarah

Acting Professor for Genetics of Crop Diversity


Flowering time, development and yield in oilseed rape (Brassica napus L.):

Sequence diversity in regulatory genes, miRNA expression and abiotic stress responses


Research Interests

My main research focus is the genetic regulation of climaticadaptation. The species I am mainlyinvestigating is the polyploid oil crop Brassica napus. In my projects, the main questions deal with natural diversity among flowering time genes, the influence of flowering time genes on adaptation and yield and the interplay between stress signaling and developmental pathways. Methodologically, I mainly work with NGS data (target enrichment/ exome sequencing, re-sequencing data, RNAseq, small RNA sequencing) and gene expression analysis. At the moment, I work on meiosis gene variation in different Brassica species. In my next project funded by the DFG, I will deal with the mutation rate of newly formed polyploids.


Skills/Expertise /Research Keywords

  • SequenceCapture/ target enrichment

  • NGS data handling

  • GWAS

  • Flowering time

  • Drought stress

  • miRNA regulation

  • Brassica napus

  • Natural variation

  • mutation rate

  • polyploidy



2015      Quedlinburger Pflanzenzüchtungstage: Extra prize for the Kurt-von-Rümker-Presentations

2014      Winner of the first Giessen ScienceSlam


Selected Publications



Schiessl S, Katche E, Ihien E, Chawla HS, Mason AS: The role of genomic structural variation in the genetic improvement of polyploid crops, The Crop Journal 2018, in press

Shah S, Weinholdt C, Jedrusik N, Molina C, Zou J, Große I, Schiessl S;et al.: Whole‐transcriptome analysis reveals genetic factors underlying flowering time regulation in rapeseed (Brassica napus L.). Plant Cell Environ. 2018;1–13



Hurgobin B, Golicz A, Bayer P, Chan K, Tirnaz S, Dolatabadian A, Schiessl S;et al.: Homoeologous exchange is a major cause of gene presence/absence variation in the amphidiploid Brassica napus. Plant Biotechnol. J. 2017

Schiessl SV, Huettel B, Kuehn D, Reinhardt R, Snowdon RJ.: Flowering time gene variation in Brassica species shows evolutionary principles. Front. Plant Sci. 2017, 8: 183

Stein A, Coriton O, Rousseau-Gueutin M, Samans B, Schiessl SV,et al.: Mapping of homoeologous chromosome exchanges influencing quantitative trait variation in Brassica napus. Plant Biotechnol. J. 2017,12732

Schiessl S, Hüttel B, Kühn D, Reinhardt R, Snowdon RJ: Targeted deep sequencing of flowering regulators in Brassica napus reveals extensive copy number variation. Sci. Data. 2017, 4: 170013

Schiessl S, Hüttel B, Kühn D, Reinhardt R, Snowdon RJ: Post-polyploidisation morphotype diversification associates with gene copy number variation. Sci. Rep. 2017, 7:41845



Schiessl S, Iniguez-Luy F, Qian W, Snowdon RJ: Diverse regulatory factors associate with flowering time and yield responses in winter-type Brassica napus. BMC Genomics 2015, 16:737

Hatzig SV, Schiessl S, Stahl A, Snowdon RJ: Characterizing root response phenotypes by neural network analysis. J. Exp. Bot. 2015, 66:5617-5624



Schiessl S, Samans B, Hüttel B, Reinhardt R, Snowdon RJ: Capturing sequence variation among flowering-time regulatory gene homologs in the allopolyploid crop species Brassica napus. Front. Plant Sci. 2014, 5



Contact information

Sarah-Veronica Schiessl-Weidenweber

Plant Breeding Department,

IFZ Research Centre for Biosystems, Land Use and Nutrition

Justus Liebig University

Heinrich-Buff-Ring 26-32

35392 Giessen, Germany

Tel: +49 641 99 37468


Room: IFZ B326