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Volume 6 Issue 3
Sep.  2015
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Article Navigation >  Journal of Tropical Biology  > 2015  >  6(3): 298-303

SHENG Yuhui, GUAN Weiyuan, XU Yongxing, LI Jing, LIU Baodong. Physiological Response of Isoetes orientalis to Artificial Sewage Water Stress[J]. Journal of Tropical Biology, 2015, 6(3): 298-303. doi: 10.15886/j.cnki.rdswxb.2015.03.013
Citation: SHENG Yuhui, GUAN Weiyuan, XU Yongxing, LI Jing, LIU Baodong. Physiological Response of Isoetes orientalis to Artificial Sewage Water Stress[J]. Journal of Tropical Biology, 2015, 6(3): 298-303. doi: 10.15886/j.cnki.rdswxb.2015.03.013
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Physiological Response of Isoetes orientalis to Artificial Sewage Water Stress

doi: 10.15886/j.cnki.rdswxb.2015.03.013

  • 1. Key Laboratory of Plant Biology, College of Heilongjiang Province, Harbin Normal University, Harbin 150025, China;

  • 2. Jiande Institute of Forestry Science of Zhejiang Province, Jiande 311600, China

  • Received Date: 2014-12-11
  • Isoetes orientalis is a wild national protective endangered aquatic pteridophyte. It is an endemic ancient relict plant inhabited in the middle and lower reaches of Yangtze River. The relationship between pollution of water body and endangerment of I. orientalis had never been reported. Mature I. orientalis plants with similar growth vigor were treated for 2- 14 days with different concentrations（ 5 times,10 times and 20 times）of sewage water to observe the change of 6 physiological indexes of the plants,i. e.,protective enzyme system,osmotic substance,chlorophyll content,malondialdehyde content,relative conductance and photosynthetic rate.I. orientalis was found to have a better tolerance to the stress of the sewage water under 5 and 10 times of the concentration but poor tolerance to the stress under the 20 times of concentration with comparatively obvious physiological injury. According to the sewage stress and the ecological conditions,the authors believe that the sewage water stress might not be the main reason for endangerment of I. orientalis.
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Physiological Response of Isoetes orientalis to Artificial Sewage Water Stress

doi: 10.15886/j.cnki.rdswxb.2015.03.013
  • 1. Key Laboratory of Plant Biology, College of Heilongjiang Province, Harbin Normal University, Harbin 150025, China;
  • 2. Jiande Institute of Forestry Science of Zhejiang Province, Jiande 311600, China
  • Received Date: 2014-12-11

Abstract: Isoetes orientalis is a wild national protective endangered aquatic pteridophyte. It is an endemic ancient relict plant inhabited in the middle and lower reaches of Yangtze River. The relationship between pollution of water body and endangerment of I. orientalis had never been reported. Mature I. orientalis plants with similar growth vigor were treated for 2- 14 days with different concentrations（ 5 times,10 times and 20 times）of sewage water to observe the change of 6 physiological indexes of the plants,i. e.,protective enzyme system,osmotic substance,chlorophyll content,malondialdehyde content,relative conductance and photosynthetic rate.I. orientalis was found to have a better tolerance to the stress of the sewage water under 5 and 10 times of the concentration but poor tolerance to the stress under the 20 times of concentration with comparatively obvious physiological injury. According to the sewage stress and the ecological conditions,the authors believe that the sewage water stress might not be the main reason for endangerment of I. orientalis.

SHENG Yuhui, GUAN Weiyuan, XU Yongxing, LI Jing, LIU Baodong. Physiological Response of Isoetes orientalis to Artificial Sewage Water Stress[J]. Journal of Tropical Biology, 2015, 6(3): 298-303. doi: 10.15886/j.cnki.rdswxb.2015.03.013
Citation: SHENG Yuhui, GUAN Weiyuan, XU Yongxing, LI Jing, LIU Baodong. Physiological Response of Isoetes orientalis to Artificial Sewage Water Stress[J]. Journal of Tropical Biology, 2015, 6(3): 298-303. doi: 10.15886/j.cnki.rdswxb.2015.03.013
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