31
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Exogenous melatonin affects photosynthesis in characeae Chara australis

      research-article

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Melatonin was found in the fresh water characeae Chara australis. The concentrations (~4 μg/g of tissue) were similar in photosynthesizing cells, independent of their position on the plant and rhizoids (roots) without chloroplasts. Exogenous melatonin, added at 10 μM to the artificial pond water, increased quantum yield of photochemistry of photosystem II by 34%. The increased efficiency appears to be due to the amount of open reaction centers of photosystem II, rather than increased efficiency of each reaction center. More open reaction centers reflect better functionality of all photosynthetic transport chain constituents. We suggest that melatonin protection against reactive oxygen species covers not only chlorophyll, but also photosynthetic proteins in general.

          Related collections

          Author and article information

          Journal
          Plant Signal Behav
          Plant Signal Behav
          PSB
          Plant Signaling & Behavior
          Landes Bioscience
          1559-2316
          1559-2324
          01 March 2013
          08 January 2013
          08 January 2013
          : 8
          : 3
          : e23279
          Affiliations
          [1 ]Department of Biophysics; Centre of the Region Haná for Biotechnological and Agricultural Research; Faculty of Science; Palacký University; Olomouc, Czech Republic
          [2 ]Department of Chemistry; University of British Columbia; Okanagan Campus; Kelowna, BC Canada
          [3 ]School of Physics; University of NSW; Sydney, NSW Australia
          Author notes
          [* ]Correspondence to: Mary J. Beilby, Email: m.j.beilby@ 123456unsw.edu.au
          Article
          2012PSB0456R 23279
          10.4161/psb.23279
          3676496
          23299331
          d337e692-ffdd-4944-9361-20a1f252e661
          Copyright © 2013 Landes Bioscience

          This is an open-access article licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. The article may be redistributed, reproduced, and reused for non-commercial purposes, provided the original source is properly cited.

          History
          : 02 December 2012
          : 13 December 2012
          : 14 December 2012
          Categories
          Research Paper

          Plant science & Botany
          antioxidants,chlorophyll fluorescence,characeae,melatonin,photosynthesis,reactive oxygen species

          Comments

          Comment on this article