Ökophysiologie der Pflanzen

Dr. rer. nat. Frauke Pescheck

Wissenschaftliche Assistentin

Am Botanischen Garten 1-9, R. 306
Telefon: +49 431 880-4291
Telefax: +49 431 880-5568
fpescheck@bot.uni-kiel.de

CV

since 2015

 Postdoc Christian Albrechts-University of Kiel, Germany
Ecophysiology of Plants, Botanical Institute
2007-2014

 PhD student, Christian Albrechts-University of Kiel, Germany
Supervisor: Professor Dr. W. Bilger, Ecophysiology of Plants, Botanical Institute
2003-2004


 Participation in the Master program `Biological Oceanography´ of the University of Kiel
and the South-Danish University (SDU),
stay abroad at the SDU in Odense, Denmark, from February 2002 until July 2002
2002-2006

 Main studies of Biology (Dipl.) at the Christian Albrechts-University of Kiel, Germany,
main subject: Marine biology, minor subjects: Botany, Marine chemistry
1999-2002 Basic studies of Biology (Dipl.) at the Leibniz University Hannover, Germany

Research interests

UVB resistance mechanisms of algae and plants

All photosynthetic organism need to protect themselves against the harmful effects of ultraviolet-B radiation. Major targets of UVB are the photosynthetic machinery and the DNA. Resistance towards UVB radiation can either be established by effective shielding or by tolerance mechanisms, like repair of induced damages. One important repair mechanism is the light-dependent splitting of UV-B induced DNA dimers, called photoreactivation. My future studies will concentrate on the following:

1. Ulva intestinalis as a model organism of a non-UV screening macroalga:

  • Characterisation of photoreactivation rates under controlled experimental conditions
  • Analysis of the expression of the photolyase gene under laboratory and field conditions combined with physiological activity measurements
  • Investigation of the ultrastructural effects of chloroplasts and nucleus localisation with respect to DNA damage formation and distribution.
  • Searching for other factors which contribute to the DNA stability of Ulva intestinalis by a comparison of the intrinsic sensitivity of the DNA with Arabidopsis thaliana and other plants
Ulva and Cladophora ona stone In Falckenstein


2. Cladophora sericea as a model organism for a UV-screening macroalga:

  • Characterisation of the screening substance
  • Determination of the variability of observed screening depending on abiotic factors under field and laboratory conditions

 

Microscopy image of Rhizoclonium riparium Microscopy image of autofluorescence of Rhizoclonium riparium

Publications

Pescheck, F. (2019) UV-A screening in Cladophora sp. lowers internal UV-A availability and photoreactivation as compared to non-UV screening Ulva intestinalis. Photochemical and Photobiological Sciences, 2019, 18, 413 -423. doi:10.1039/C8PP00432C.  http://pubs.rsc.org/en/content/articlehtml/2019/PP/C8PP00432C

Pescheck F., Bilger W. (2019) High impact of seasonal temperature changes on acclimation of photoprotection and radiation-induced damage in field grown Arabidopsis thaliana. Plant Physiology and Biochemistry, 134, 129-136. doi: 10.1016/j.plaphy.2018.07.037.https://www.sciencedirect.com/science/article/pii/S0981942818303383

Pescheck F., Bilger W. (2018) Compensation of lack of UV screening by cellular tolerance in green macroalgae (Ulvophyceae) from the upper eulittoral. Marine Biology, 165:132. doi: 10.1007/s00227-018-3393-0 link

Pescheck, F., Campen, H., Nichelmann, L., and W. Bilger (2016) Relative sensitivity of DNA and photosystem II in Ulva intestinalis (Chlorophyta) under natural solar irradiation. Marine Ecology Progress Series, 555, 95-107

Pescheck, F., Lohbeck, K., Roleda, M., and W. Bilger (2014) UVB-induced DNA and photosystem II damage in two intertidal green macroalgae: distinct survival strategies in UV-screening and non-screening Chlorophyta. Journal of Photochemistry and Photobiology B: Biology 132, 85–93

Pescheck, F., Bischof, K. and W. Bilger (2010) Screening of UV-A and UV-B radiation in marine green macroalgae (Chlorophyta). Journal of Phycology, 46, 444-455