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《Journal of Shandong Forestry Science and Technology》 2016-02
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Effects of salt stress on osmotic regulatory substances and protective enzyme system in Celtis sinensis

ZHOU Dandan;LI Cunhua;YANG Qingshan;LIU Dexi;LIU Guimin;College of Forestry Shandong Agricultural University;Shandong Academy of Forestry Sciences;  
[Objective]Celtis sinensis were studied on different concentration salt and identified of osmotic adjustment solute and protective enzyme activity in order to lay a foundation for studying the salt-tolerant physiological mechanism of Celtis sinensis and supplied theoretical basis and practical guidance for cultivation and popularization of Celtis sinensis.[Method]Basic same size seedlings were chosen and growth for three months,then,seedlings of Celtis sinensis were managed in 0‰(CK),2 ‰,2.5 ‰,3.5‰and 5‰salt concentration,we measured they physiological index after 7days and determination of every ten days.[Result]Under lower stress the osmotic adjustment solute content(the soluble sugar,proline,the soluble protein)and protective enzyme activities(SOD,POD,CAT)in Celtis sinensis increased slowly.Under 5‰ stress treatment,the osmotic adjustment solute content increased by the extension of salt stress time(the soluble protein increased unremarkably),and the activities of SOD,POD,CAT were increased at first and then decreased by the extension of salt stress time.[Conclusion]These indicated that Celtis sinensis had some adapt ability to moderate salt osmotic stress by regulating the internal osmotic adjustment solute and activities of defense enzymes,but the salt osmotic stress with high concentration and long time might lead to severe damage on Celtis sinensis.
【Fund】: 林木良种选育“黄河三角洲滨海盐碱地高抗逆植物材料选育”(项目编号:2012LZ12-03)
【CateGory Index】: S792.99
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