Medicinal Plant

2013, v.4(09) 13-16

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Changes of the Physiological and Berberine Content in Phellodendron amurense Seedlings under Drought Stress
Changes of the Physiological and Berberine Content in Phellodendron amurense Seedlings under Drought Stress

Bingxing QIN;Liping YAO;Zhiqiang ZHOU;Yuhong ZHANG;

摘要(Abstract):

[Objective]To research on the changes of the physiological indexes and berberine content in Phellodendron amurense seedlings under drought stress.[Methods]With P.amurense seedlings as the research materials,PEG 8000 with three different concentrations was used to simulate the drought stress.With MDA content,proline content and SOD activity as the investigation indexes,changes within 9 hours of drought stress were investigated.And the berberine content in leaves was detected.[Results]Under the stresses of 5%,10%and 20%PEG,changes of MDA content varied.Under 5%PEG treatment,MDA content reduced,and was lower than that before stress during the whole treatment(P<0.05).Under 10%PEG treatment,MDA content increased a little and a significantly increase appeared at the 9thhour(P<0.05).Under 20%PEG treatment,MDA content showed a single peak curve.Plasma membrane permeability showed a fluctuated upward trend as the stress time prolonged,and high PEG concentration led to great damage degree to membrane.Under 20%PEG treatment,proline content firstly decreased and then increased.Under a higher concentration of PEG,proline content varied greatly.SOD activity firstly enhanced and then reduced.With the increase of PEG concentration,the peak of SOD activity came earlier.Berberine content in leaves firstly enhanced and then decreased gradually as the stress time prolonged.Under higher concentration of PEG,the berberine content reached its peak earlier;while under lower concentration of PEG,the berberine content peak came later,but the maximum value was higher.[Conclusions]Drought stress had harmful effects on the physiology of P.amurense seedlings,but could enhance the berberine content in leaves.

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基金项目(Foundation): Supported by the Special Scientific Research Fund of Forestry Public Welfare Industry(201104066);; Projects of Science and Technology Development Program of Jinlin Province(20120914)

作者(Author): Bingxing QIN;Liping YAO;Zhiqiang ZHOU;Yuhong ZHANG;

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