heva6028

 Henrique Valim

   
   Department of Molecular Ecology
 Phone:+49 (0)3641 57 1124Max Planck Institute for Chemical Ecology
 Fax:+49 (0)3641 57 1102Hans-Knöll-Straße 8
  emailD-07745 Jena

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PhD Thesis

started in May 2015
Timing responses throughout development: effects of the circadian clock on plant fitness in the face of abiotic and biotic stress
Friedrich-Schiller-Universität Jena, Biological Pharmazeutical Faculty
First Supervisor: Prof. I.T. Baldwin
Co-Supervisor(s): Dr. M.C. Schuman, Dr. N. van Dam


Effect of circadian clock on productivity of mono- and mixed cultures of Nicotiana attenuata: This research is focused on three aspects of intraspecific genetic diversity. The circadian clock has been shown to help regulate plant metabolism efficiently. In order to better elucidate how the costs of herbivory stress are affected by the clock, I will compare growth and reproduction of irTOC1 clock-shifted transgenic plants with EV (empty vector) plants. N. attenuata has been shown to respond differentially to specialist and generalist herbivores, and unpublished data also indicate that herbivory abolishes the rhythmicity of the clock. I will therefore also compare the growth and reproduction of these two lines under both generalist (Spodoptera littoralis) and specialist (Manduca sexta) herbivory stress. The ultimate goal of this project is to examine these herbivore-induced effects under mono- and mixed cultures of clock-shifted and non-shifted plants at a population level. By establishing an artificial community in which plants differ in only a single gene (TOC1), this project can provide a better understanding of the role of functional diversity in mediating plant responses to herbivory stress and to overall population productivity and reproductive capability.
last updated on 2014-10-22