Research Commons
      • Browse 
        • Communities & Collections
        • Titles
        • Authors
        • By Issue Date
        • Subjects
        • Types
        • Series
      • Help 
        • About
        • Collection Policy
        • OA Mandate Guidelines
        • Guidelines FAQ
        • Contact Us
      • My Account 
        • Sign In
        • Register
      View Item 
      •   Research Commons
      • University of Waikato Research
      • Science and Engineering
      • Science and Engineering Papers
      • View Item
      •   Research Commons
      • University of Waikato Research
      • Science and Engineering
      • Science and Engineering Papers
      • View Item
      JavaScript is disabled for your browser. Some features of this site may not work without it.

      The moss Bryum argenteum var. muticum Brid. is well adapted to cope with high light in continental Antarctica

      Schroeter, Burkhard; Green, T.G. Allan; Kulle, Daniel; Pannewitz, Stefan; Schlensog, Mark; Sancho, Leopoldo G.
      Thumbnail
      Files
      The moss.pdf
      315.9Kb
      DOI
       10.1017/S095410201200003X
      Link
       journals.cambridge.org
      Find in your library  
      Citation
      Export citation
      Schroeter, B., Green, T.G.A., Kulle, D., Pannewitz, S., Schlensog, M. & Sancho, L.G. (2012). The moss Bryum argenteum var. muticum Brid. is well adapted to cope with high light in continental Antarctica. Antarctic Science, 24(3), 281-291.
      Permanent Research Commons link: https://hdl.handle.net/10289/6420
      Abstract
      The net photosynthetic rate (NP), chlorophyll fluorescence, carotenoid content and chlorophyll content of the cosmopolitan moss Bryum argenteum were measured in the field at Botany Bay, southern Victoria Land, continental Antarctica (77°S). Comparisons were made between sun- and shade-adapted forms, and changes were followed as the moss emerged from under the snow and during exposure of shade and sun forms to ambient light. Shade forms had lower light compensation and saturation values for NP but little difference in maximal NP rates. Shade forms exposed to ambient light changed rapidly (within five days) towards the performance of the sun forms. Surprisingly, this change was not by acclimation of shoots but by the production of new shoots. Chlorophyll and carotenoid levels measured on a molar chlorophyll basis showed no difference between sun and shade forms and also little change during emergence. The constant molar relationship between carotenoids and chlorophyll plus the high levels of the xanthophyll cycle pigments suggest that protection of the chlorophyll antenna was constitutive. This is an adaptation to the very high light levels that occur when the plants are active in continental Antarctica and contrasts to the situation in more temperate areas where high light is normally avoided by desiccation.
      Date
      2012
      Type
      Journal Article
      Publisher
      Cambridge University Press
      Rights
      This article has been published in the journal: Antarctic Science. © Antarctic Science Ltd. Used with permission.
      Collections
      • Science and Engineering Papers [3124]
      Show full item record  

      Usage

      Downloads, last 12 months
      90
       
       
       

      Usage Statistics

      For this itemFor all of Research Commons

      The University of Waikato - Te Whare Wānanga o WaikatoFeedback and RequestsCopyright and Legal Statement