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孙昊, 王茜, 关旸, 刘保东. 粗毛鳞盖蕨干旱胁迫下生理变化规律的研究[J]. 植物科学学报, 2013, 31(6): 576-582. DOI: 10.3724/SP.J.1142.2013.60576
引用本文: 孙昊, 王茜, 关旸, 刘保东. 粗毛鳞盖蕨干旱胁迫下生理变化规律的研究[J]. 植物科学学报, 2013, 31(6): 576-582. DOI: 10.3724/SP.J.1142.2013.60576
SUN Hao, WANG Qian, GUAN Yang, LIU Bao-Dong. Effects of Microlepia strigosa under Drought Stress on Physiological Change Laws[J]. Plant Science Journal, 2013, 31(6): 576-582. DOI: 10.3724/SP.J.1142.2013.60576
Citation: SUN Hao, WANG Qian, GUAN Yang, LIU Bao-Dong. Effects of Microlepia strigosa under Drought Stress on Physiological Change Laws[J]. Plant Science Journal, 2013, 31(6): 576-582. DOI: 10.3724/SP.J.1142.2013.60576

粗毛鳞盖蕨干旱胁迫下生理变化规律的研究

Effects of Microlepia strigosa under Drought Stress on Physiological Change Laws

  • 摘要: 研究了粗毛鳞盖蕨(Microlepia strigosa)成熟孢子体在自然干旱胁迫处理下生理特性的变化。发现胁迫过程中其相对电导率、过氧化物酶(POD)活性、可溶性糖、脯氨酸含量上升;可溶性蛋白与丙二醛(MDA)含量先升高后降低再升高;超氧化物歧化酶(SOD)活性、叶绿素含量、总呼吸速率、净光合速率(Photo)、蒸腾速率(Trmmol)、气孔导度(Cond)呈下降趋势;CAT活性、胞间CO2浓度(Ci)呈先升后降的趋势。表明其膜系统并未受到严重伤害;渗透调节系统起到了较好的抗脱水作用;保护酶系统虽受到抑制,但仍能发挥清除自由基的作用;呼吸及光合系统受到影响显著下降,但主要表现为植物体的自主调节。说明在胁迫过程中粗毛鳞盖蕨生理上能够迅速作出相应的适应调节,表现出对干旱胁迫后较强的恢复能力和一定的忍耐能力。

     

    Abstract: Research on Microlepia strigosa under natural drought stress treatment exhibited changes in physical properties.Stress increased relative conductivity,POD activity,soluble sugar and proline content.Soluble protein and MDA content high-low-high;SOD activity,chlorophyll content,total respiratory rate,net photosynthetic rate Intercellular CO2 concentration and stomatal conductance is on the decline;The CAT activity and Transpiration rate is raise-lower.The membrane system did not exhibit serious damage.The osmotic regulation system had good resistance to dehydration.The protective enzyme system played a role against free radicals;respiration and photosynthesis decreased significantly,but mainly for autonomic regulation of the plant.Results demonstrated that M.strigosa adapted to stress,and showed a strong ability of recovery after drought and exhibited certain endurance ability.

     

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