Dynamic interconversion and phototransformation processes of protochlorophyllide complexes during greening

Annamária Kósa, Béla Böddi

Research output: Contribution to journalArticle

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Abstract

Photoreduction and interconversion processes of different protochlorophyllide complexes were studied in epicotyl segments of dark-germinated pea (Pisum sativum L.) seedlings illuminated with low-intensity white or 632.8 nm laser light. Analyses of 77 K fluorescence emission spectra showed the direct phototransformation of the monomer, 636 nm emitting complex. The 629 nm emitting complex containing also monomer pigment, regenerated all longer wavelength, flash-photoactive complexes. A dynamic transformation of the protochlorophyllide complexes was also detected during the illumination and/or the subsequent dark-incubation. On the basis of these results, the protochlorophyllide phototransformation schemes can be completed with new pathways.

Original languageEnglish
Pages (from-to)219-220
Number of pages2
JournalActa Biologica Szegediensis
Volume49
Issue number1-2
Publication statusPublished - Dec 1 2005

Keywords

  • Epicotyl
  • Pea
  • Phototransformation
  • Protochlorophyllide

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)

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