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Bulletin of Botanical Research ›› 2009, Vol. 29 ›› Issue (2): 204-208.doi: 10.7525/j.issn.1673-5102.2009.02.014

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Effects of He-Ne Laser on Chloroplast of Wheat Seedling Exposed to Enhanced UV-B Radiation

GUO Jun-Yu;ZHANG Qin;HAN Rong*   

  1. (College of Life Science,Shanxi Normal University,Linfen 041004)
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-03-20 Published:2009-03-20
  • Contact: HAN Rong
  • Supported by:

Abstract: The seedling of wheat (jinmai8) were exposed to He-Ne laser (5 mW·mm-2), enhanced UV-B radiation (10.08 kJ·m-2·d-1) and the combined treatment of He-Ne laser irradiation and enhanced UV-B radiation. The measurement permeability of chloroplast membrane,chloroplast protein content,Hill reaction activity and ATPase activity of wheat seedlings. Result enunciation: the chloroplast membrane permeability has increased after UV-B radiated wheat seedlings,chloroplast protein content went down, Hill reaction activity and ATPase activity were restrained. The He-Ne laser can make chloroplast membrane permeability fall,chloroplast protein content go up certainly. Hill reaction activity and ATPase activity were also partially activated.These variety explain enhanced UV-B radiation cause damage chloroplast of wheat seedling, but certain the He-Ne laser partially repair UV-B damage the system of photosynthesis on wheat seedling.

Key words: He-Ne laser, UV-B, Wheat, Chloroplast, The system of photosynthesis

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