| 锌胁迫对长药景天生理特性的影响 |
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| 引用本文： | 王莹,刘晶,杨国亭,关旸.锌胁迫对长药景天生理特性的影响[J].林业科学研究,2016,29(4):560-564. |
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| 作者姓名： | 王莹 刘晶 杨国亭 关旸 |
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| 作者单位： | 东北林业大学林学院生态研究中心, 黑龙江 哈尔滨 150000;哈尔滨师范大学黑龙江省普通高等学校植物 生物学重点实验室, 黑龙江 哈尔滨 150025;哈尔滨师范大学黑龙江省普通高等学校植物 生物学重点实验室, 黑龙江 哈尔滨 150025;黑龙江省林业厅, 黑龙江 哈尔滨 150000;哈尔滨师范大学黑龙江省普通高等学校植物 生物学重点实验室, 黑龙江 哈尔滨 150025 |
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| 摘 要： | 目的]利用低浓度和高浓度的Zn SO4溶液对长药景天的长期胁迫,研究长药景天锌胁迫下的抗性能力。方法]采用盆栽试验,锌以Zn SO4·7H2O的形式供给,浓度分别为0、160和1 600 mg·kg-1Zn SO4,分别于0、7、14、21、28、35 d采集长势健康,且个体相近的植株,在相同部位选取功能叶片,测定长药景天叶片生理指标的变化。结果]表明:低浓度(160 mg·kg-1Zn SO4)锌胁迫下,长药景天叶片电导率和MDA含量增加不显著;SOD、POD和CAT等保护酶活性增加,脯氨酸、可溶性糖和可溶性蛋白含量增加,高浓度(1 600 mg·kg-1Zn SO4)下电导率和MDA含量增加,保护酶活性增加,脯氨酸、可溶性糖和可溶性蛋白含量变化较小。结论]长药景天对锌胁迫表现出较强的抗性,低浓度锌胁迫下调节能力较强,高浓度下主要依赖于保护酶系统的调节作用抵抗锌胁迫。在持续锌胁迫过程中,长药景天生理上能迅速作出相应的适应性调节,对锌胁迫表现出一定的忍耐能力和较强的恢复能力。
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| 关 键 词： | 长药景天 锌胁迫 保护酶活性 渗透调节物质 |
| 收稿时间： | 2016/2/26 0:00:00 |
Effects of Zn Stress on Physiological Characteristics of Hylotelephium spectabile |
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| WANG Ying,LIU Jing,YANG Guo-ting and GUAN Yang.Effects of Zn Stress on Physiological Characteristics of Hylotelephium spectabile[J].Forest Research,2016,29(4):560-564. |
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| Authors: | WANG Ying LIU Jing YANG Guo-ting and GUAN Yang |
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| Institution: | Ecological Research Centre, College of Forestry, Northeast Forestry University, Harbin 150000, Heilongjiang, China;Key Laboratory of Plant Biology, Harbin Normal University, Harbin 150025, Heilongjiang, China;Key Laboratory of Plant Biology, Harbin Normal University, Harbin 150025, Heilongjiang, China;Forestry Bureau of Heilongjiang Province, Harbin 150000, Heilongjiang, China;Key Laboratory of Plant Biology, Harbin Normal University, Harbin 150025, Heilongjiang, China |
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| Abstract: | Objective] To study the tolerance of Hylotelephium spectabile to long-term ZnSO4 stress. Method] Pot experiment was conducted to study the changes of leaves'' physiological indexes of H. spectabile. The plants were treated with different concentrations ZnSO4·7H2O (0, 160 and 1 600 mg·kg-1) and the healthy leaves with the same size were collected as control material at the same position on the 0, 7th, 14th, 21th, 28th, and 35th days respectively. Result] Under the stress of low concentration Zn, the electrical conductivity and the concentration of MDA of the leaf of H. spectabile didn''t increased distinctively; the activity of protective enzyme such as SOD, POD and CAT increased; the concentration of proline, soluble sugar and soluble protein increased. Under the stress of high concentration Zn, the electrical conductivity and the concentration of MDA increased; the protective enzyme activity increased; the concentration of proline, soluble sugar and soluble protein changed slightly. Conclusion] H. spectabile had a strong tolerance to Zn stress. Under low concentration Zn stress, H. spectabile showed a stronger ability to adjust, and under high concentration Zn stress, H. spectabile depended mainly on regulating protective enzyme system. In the process of continuous Zn stress, H. spectabile quickly made the corresponding physiological adaptation to Zn stress, and showed tolerance and a strong recovery ability. |
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| Keywords: | Hylotelephium spectabile Zn stress protective enzyme activity osmoregulatory substance |
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