Drought resistance analysis of Nitraria billardieri seedlings

doi:10.3969/j.issn.1000-2006.2015.05.010

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2015, Vol. 39 ›› Issue (06): 51-55.doi: 10.3969/j.issn.1000-2006.2015.05.010

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Drought resistance analysis of Nitraria billardieri seedlings

LU Lu¹, ZHANG Jingbo², CHEN Jinhui¹, ZHOU Yanwei¹, CHENG Tielong^1*

1.Key Laboratory of Forest Genetics and Biotechnology, Ministry of Education, College of Forestry, Nanjing Forestry University, Nanjing 210037, China;
2.The Experimental Center for Desert Forestry, Chinese Academy of Forestry, Dengkou 015200, China

Online:2015-11-30 Published:2015-11-30

Abstract

Abstract: The drought resistance research of Australia desert plants Nitraria billardieri was focused by observing morphological changes and analyzing variation trends of relative water content(RWC), enzymatic activity of peroxidase(POD), malondiadehyde(MDA), and proline(Pro)under drought stress simulated by 100 mmol/L mannitol solution. The results showed that the leaves turned yellow under drought stress and withered gradually from base to top, presumably by protecting the vitality of buds to adapt the arid environments. The relative water content kept relatively stable at early stage and then decreased gradually. The POD activity increased slowly at first and then increased rapidly. Free Pro concentration had been rising during the treatment. MDA content increased at first and then decreased. According to the statistical analysis, both POD and free Pro increased obviously compared with control group. They reduced plasma membrane peroxidation and kept the cell integrity which showed drought resistance of Nitraria billardieri. MDA concentration did not change significantly, this indicated that cytoplasmic membrane system was protected and did not seriously suffer from reactive oxygen free radical attacking under drought stress probably caused by increased concentration of POD and free Pro.

CLC Number:

S718
Q945.78

LU Lu, ZHANG Jingbo, CHEN Jinhui, ZHOU Yanwei, CHENG Tielong. Drought resistance analysis of Nitraria billardieri seedlings[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2015, 39(06): 51-55.

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Drought resistance analysis of Nitraria billardieri seedlings

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