干旱胁迫下小斜视虫生理变化规律的影响

Hao Sun, Qian Wang, Yang Guan, Baowen Liu
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引用次数: 1

摘要

研究表明,自然干旱胁迫处理下的糙皮小蠹物理性状发生了变化。胁迫增加了相对电导率ꎬPOD活性ꎬ可溶性糖和脯氨酸含量。可溶性蛋白和MDA含量高/低/高ꎻSOD活性ꎬ叶绿素含量ꎬ总呼吸速率ꎬ净光合速率细胞间CO2浓度和气孔导度呈下降趋势ꎻCAT活性和蒸腾速率呈上升/下降趋势。膜系统未出现严重损伤。渗透调节系统具有良好的抗脱水性能。保护酶系统对自由基起作用ꎻ呼吸和光合作用显著降低ꎬ,但主要是植物的自主调节作用。结果表明:􀆰糙毛藻适应逆境ꎬ,表现出较强的旱后恢复能力和一定的耐旱能力。
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Effects ofMicrolepia strigosaunder Drought Stress on Physiological Change Laws
Research on Microlepia strigosa under natural drought stress treatment exhibited changes in physical properties. Stress increased relative conductivityꎬ POD activityꎬ soluble sugar and proline content. Soluble protein and MDA content high ̄low ̄highꎻ SOD activityꎬ chlorophyll contentꎬ total respiratory rateꎬ net photosynthetic rate Intercellular CO2 concentration and stomatal conductance is on the declineꎻ 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 radicalsꎻ respiration and photosynthesis decreased significantlyꎬ but mainly for autonomic regulation of the plant. Results demonstrated that M􀆰 strigosa adapted to stressꎬ and showed a strong ability of recovery after drought and exhibited certain endurance ability.
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