The Impact of Drought Stress on Physiological Indicators of Four Shrub Species on the Qinghai-Tibet Plateau / 干旱胁迫对青藏高原4种灌木生理指标的影响

Four shrub species, Hippophae rhamnoides, Caragana sinica, Sophora moorcroftiana, and Caryopteris tangutica from Qinghai-Tibet Plateau were used to simulate the drought stress on potted seedlings. By comparing the changes of malondialdehyde (MDA) content, superoxide dismutase (SOD) activity, peroxid...

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Published inForest research (Beijing) Vol. 26; no. 3; p. 352
Main Authors 潘昕, 李吉跃, 王军辉, 何茜, 苏艳, 马建伟, 杜坤
Format Journal Article
LanguageChinese
Published Beijing Chinese Academy of Forestry 01.01.2013
Subjects
Drought
Proteins
Tibet
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Summary:Four shrub species, Hippophae rhamnoides, Caragana sinica, Sophora moorcroftiana, and Caryopteris tangutica from Qinghai-Tibet Plateau were used to simulate the drought stress on potted seedlings. By comparing the changes of malondialdehyde (MDA) content, superoxide dismutase (SOD) activity, peroxidase (POD) activity, praline content, and soluble protein content, the drought resistance performance of selected tree species were analyzed and evaluated in order to find the superior drought tolerant shrub species suitable for the afforestation on Qinghai-Tibet Plateau area. The results indicated that the MDA content rose slowly when the four selected plants were under light drought stress and reached the maximum when under heavy drought stress. Both the peak and increase of MDA content of Caryopteris tangutica were the least compared with the other three species, followed by Caragana sinica and Hippophae rhamnoides, and the peak and increase of MDA of Sophora moorcroftiana were the largest. The change rule of SOD
ISSN:1001-1498