Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Journal of Gansu Agricultural University》 2009-01
Add to Favorite Get Latest Update

Study on antioxidase activities of Picea crassifolia and Sabina przewalskii at different altitude gradients

CHEN Xiao-li1,ZHANG Peng1,ZHANG Tao1,CHEN Nian-lai1,2,CHEN Tuo2 (1.College of Resource and Environmental Sciences,Gansu Agricultural University,Lanzhou 730070,China;2.Cold and Arid Region Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou 730000,China)  
Taking the leaves of Picea crassifolia and Sabina przewalskii at different altitude gradients(2 765 m~3 565 m) in Sidalong forests as the experimental materials,the antioxidase activities of the leaves were determined,and based on the determination results,the mechanism of how evergreen xylophyte antioxidase system adapting to the mountain extreme environment was discussed.The results showed as follows: with the increasing altitude,contents of MDA,soluble protein,superoxide dismutase(SOD),the activities of peroxidase(POD) and catalase(CAT) were all increased in both Picea crassifolia and Sabina przewalskii;when at the same altitude gradient,the content of MDA was higher in Picea crassifolia than that in Sabina przewalskii,but the content of soluble protein was opposite.These indicated that both trees could adapt to low temperature,frozen and strong radiation stresses,but Sabina przewalskii had the higher ability of resisting low temperature and strong radiation stress.
【Fund】: 国家自然科学基金项目(30670319 30770342)
【CateGory Index】: S791
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved