Comparative analysis of distinct seed dormancy mechanisms within the genus Lepidium (cress) and the evolution of the Brassicaceae DOG1 dormancy genes

Project: Research

Project Details


The monophyletic Brassicaceae genus Lepidium (cress) contains species with distinct mechanisms for dormancy and germination: (1) non-dormant seeds, (2) coat-dormant seeds, (3) embryo-dormant seeds. We compare these traits in an evolutionary frame by cross-species approaches. Our project focus is on the embryo and on temperature as the major environmental factor influencing dormancy. Embryo elongation growth - prerequisite to germination - is regulated by hormones and associated with a distinct embryonic expansion zone. This zone is determined and investigated regarding temperature responses and distinct dormancy mechanisms. The large Lepidium seed sizes allow tissue-specific transcript (transcriptome, qRT-PCR, SSH libraries) and hormone analyses. The evolution of the Brassicaceae DOG1 (DELAY OF GERMINATION1) genes is studied related to the distinct dormancies and beyond Lepidium in a set of phylogenetically meaningful selected species. This includes Brassicaceae producing heteromorphic seeds which - although derived from the same plant - show distinct dormancy and germination patterns
AcronymDFG Le720/7-2
Effective start/end date1/04/1131/10/14


  • DFG - Deutsche Forschungsgemeinschaft (German Research Foundation): £318,600.00

UN Sustainable Development Goals

In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This project contributes towards the following SDG(s):

  • SDG 13 - Climate Action