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《Acta Botanica Boreali-Occidentalia Sinica》 2008-08
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Effects of Enhanced UV-B and He-Ne Laser on Leaf Microstructure and Photosynthesis in Wheat

LI Yong-feng,HAN Rong(College of Life Science,Shanxi Normal University,Linfen,Shanxi 041004,China)  
The seedlings of wheat('Jinmai 47')were exposed to He-Ne laser irradiation(L) with 5 mW·mm-2 power density after enhanced UV-B radiation(10.08 kJ·m-2·d-1).The micro-structure characteristics of wheat leave tissue were studied by the method of paraffin wax section.Meanwhile,the photosynthesis characteristics and water use conditions of wheat seedlings were studied.Here are the results:(1)Compared with CK,the epidermic cells and tentacles of UV-B treatment(B) and compound treatment(BL) arrange closely.Stomas are small,sparse and cave in,and leaf tissue cells more thicker,smaller and arrange closely.The ralative transverse areas of vascular bundles tend to minish.The previous characters in BL lies between CK and B.(2)The net photosynthetic rate,stomatal conductance and transpiration rate in B dropped notably.Compared with B,the net photosynthetic rate and stomatal conductance in BL are on the high side,but difference in transpiration rate is not evident.On water utilization efficiency,LCKBLB.(3)Chlorophyll content in wheat seedlings cut down sharply under UV-B radiation,when treated with He-Ne laser,the content will hoist in a certain extent,and the changeable extent of Chl a is wider than that of Chl b.In conclusion,the use of laser irradiation treatment can repair partly the damage induced by UV-B radiation in cell microstructure and photosynthetic organs in wheat seedlings.
【Fund】: 国家自然科学基金资助项目(30671061);; 山西省自然科学基金资助项目(20041101)
【CateGory Index】: S512.1
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【References】
Chinese Journal Full-text Database 1 Hits
1 CUI Ying,CHEN Yi-Ping (Institute of Earth Environment,Chinese Academy of Sciences;State Key Laboratory of Loess and Quatemary Geology,Xi'an 710075,China);Research trend on regulating effect of laser pretreatment on plant growth[J];Chinese Journal of Eco-Agriculture;2010-05
【Co-references】
Chinese Journal Full-text Database 10 Hits
1 HAN Rong 1,2,YUE Ming 1,WANG Xun-ling *1,3 (1 College of Life Sciences,Northwest University,Xi'an 710069,China;2 College of Life Sciences,Shanxi Normal University,Linfen,Shanxi 041004,China;3 College of Life Sciences,Lanzhou University,Lanzhou 730;The damage repair effects of He-Ne laser on wheat seedlings exposed to enhanced Ultraviolet-B irradiation[J];Acta Botanica Boreali-occidentalia Sinica;2002-02
2 ZHANG Jian-dong~1,CHEN Yi-ping~1,WANG Xun-ling~(1,2*)(1 College of Life Science, Northwest University, Xi'an 710069,China;2 College of Life Science, Lanzhou University, Lanzhou 730000,China);Effects of CO_2 laser treatment on seeds germination and physiology of soybean[J];Acta Botanica Boreali-occidentalia Sinica;2004-02
3 HAO Jin-hua1,MA Xiao-li1,2,HAN Rong1* (1 College of Life Science,Shanxi Normal University,Linfen,Shanxi 041004,China;2 Shanxi Jinzhong University,Yuci,Shanxi 030600,China);Damage Repair Effects of He-Ne Laser on Wheat Seedlings Exposed to Enhanced Ultraviolet-Birradiation[J];Acta Botanica Boreali-Occidentalia Sinica;2007-01
4 HAN Rong1,ZHANG Mei-ping1,WANG Xiao-xia1,YUE Ming2,WANG Xun-ling2(1 College of Life Science,Shanxi Normal University,Linfen,Shanxi 041004,China;2 College of Life Science,Northwest University,Xi'an 710069,China);Mechanism of Repairation of He-Ne Laser Irradiation on "Root-bending" in Wheat Seedling Induced by Enhanced Ultraviolet-B[J];Acta Botanica Boreali-Occidentalia Sinica;2007-03
5 WANG Xiao-hua1,LIU Hai-feng2,HAN Rong(1)(1 Institute of Cell Engineering,College of Life Sciences,Shanxi Normal University,Linfen,Shanxi 041004 China;2 Jiangsu Province Key Laboratory for Molecular and Medical Biotechnology,College of Life Sciences,Nanjing Normal University,Nanjing 210046 China);Effect of He-Ne Laser and Enhanced Ultraviolet-B Radiation on Protein Metabolism of Wheat Seedlings[J];Acta Botanica Boreali-Occidentalia Sinica;2008-01
6 QIU Zong-bo1,LI Jin-ting1,YUE Ming2 (1 College of Life Science,Henan Normal University,Xinxiang,He’nan 453007,China;2 College of Life Science,Northwest University,Xi’an 710069,China);Influence of He-Ne Laser Irradiation on Physiological Characteristics in Wheat Seedlings under Water Stress[J];Acta Botanica Boreali-Occidentalia Sinica;2008-05
7 Li Fangmin1,Lu Zhiguo2,Wang Xunling1,Yue Min 1,** 1 College of Life Science, Northwest University,Xi′an 710069 2 College of Physics, Northwest University, Xi′an 710069;Protect Effects of CO_2 Laser Pretreatment on Wheat Seedling Lipid Peroxidation by UV-B Radiation[J];Acta Photonica Sinica;2006-04
8 ZHANG Qin,HAN Rong(College of Life Science,Shanxi Normal University,Linfen Shanxi 041004,China);Effects of He-Ne Laser and Enhanced UV-B Radiation on Photochemical Activities of Chloroplasts in Wheat (in Vivtro)[J];Acta Photonica Sinica;2008-03
9 Chen Yiping 1,Wang Xunling 1,2 ( 1 College of Life Science,Northwest University,Xi’an,710069) ( 2 College of Life Science,Lanzhou University,Lanzhou,730070);The study on biochemistry effects of He-Ne laser pretreatmented seed of isatis indigotica[J];Laser Technology;2003-06
10 CHEN Yi ping 1,WANG Xun ling 1,2 (1.College of Life Science,Northwest University,Xi’an 710069,China; 2.College of Life Science,Lanzhou University,Lanzhou 730070,China);Effects of He-Ne laser treatment seeds of isatis indigotica on photosynthesis of seedlings[J];Laser Technology;2004-01
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