These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Dissipation of excess energy triggered by blue light in cyanobacteria with CP43' (isiA).
    Author: Cadoret JC, Demoulière R, Lavaud J, van Gorkom HJ, Houmard J, Etienne AL.
    Journal: Biochim Biophys Acta; 2004 Nov 04; 1659(1):100-4. PubMed ID: 15511532.
    Abstract:
    The chlorophyll-protein CP43' (isiA gene) induced by stress conditions in cyanobacteria is shown to serve as an antenna for Photosystem II (PSII), in addition to its known role as an antenna for Photosystem I (PSI). At high light intensity, this antenna is converted to an efficient trap for chlorophyll excitations that protects system II from photo-inhibition. In contrast to the 'energy-dependent non-photochemical quenching' (NPQ) in chloroplasts, this photoprotective energy dissipation in cyanobacteria is triggered by blue light. The induction is proportional to light intensity. Induction and decay of the quenching exhibit the same large temperature-dependence.
    [Abstract] [Full Text] [Related] [New Search]