| 李宏博,吕德国,姜水莺,梁姗,朴钟云.NaCl胁迫对珊瑚菜叶绿素荧光动力学参数等生理特性的影响[J].干旱地区农业研究,2011,29(6):239~243 |
| NaCl胁迫对珊瑚菜叶绿素荧光动力学参数等生理特性的影响 |
| The effect of NaCl st ress on chlorophyl fluorescence parameters and other physiological characteristics of Glehnia littoralis |
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| DOI：10.7606/j.issn.1000-7601.2011.06.43 |
| 中文关键词: 珊瑚菜 NaCl胁迫 叶绿素荧光 生理特性 |
| 英文关键词:Glehnia littoralis NaCl stress Chlorophyll fluorescence physiological characteristics |
| 基金项目:科技部科技基础性工作专项(2007FY110500-10)；辽宁省沿海地区抗旱耐盐碱优异性状农作物种质资源调查 |
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| 中文摘要: |
| 采用不同浓度的NaCl溶液处理珊瑚菜幼苗,测定了叶绿素荧光动力学参数、可溶性糖含量、丙二醛含量和三种抗氧化酶活性等相关生理生化指标。结果表明,除SOD活性和丙二醛含量在100 mmol/L NaCl溶液处理条件下变化不明显之外,可溶性糖含量、过氧化物酶(POD)和过氧化氢酶(CAT)活性均随着处理浓度的增加而呈明显的先增加后降低趋势;而反映PSⅡ活性中心荧光特性的四个参数:单位反应中心吸收的光能(ABS/RC)、单位反应中心捕获的用于还原QA的能量(TR0/RC)、单位反应中心捕获的用于电子传递的能量(ET0/RC)、单位反应中心耗散掉的能量(DI0/RC)在100 mmol/L和200 mmol/L NaCl溶液处理条件下的变化均不明显,在300 mmol/L NaCl溶液条件下,除ET0/RC变化较小外,ABS/RC、TR0/RC和DI0/RC均呈先增再降趋势。珊瑚菜对NaCl胁迫具有一定的适应调节能力。 |
| 英文摘要: |
| Glehnia lttoralis seedlings treated by NaCl solution with different concentrations were studied and chloro-phyll fluorescence parameters，soluble sugar content，MDA content and three types of antioxidant enzyme activity were measured. The results showed that，SOD activity and MDA content in the treatment with 100 mmol/L NaCl solution did not change significantly， while the soluble sugar content，peroxidase (POD) and catalase (CAT) activity were signifi-cantly increased first and then decreased with the increase of the solution concentration. The four parameters reflecting the fluorescence of PS Ⅱ activity center: absorption of light energy per active reaction center(ABS/ RC)，unit of reaction center to capture the energy for the reduction of QA (TR0/ RC)，reaction center umnit for electronic capture transfer of en-ergy (ET0/ RC)，unit of energy dissipated reaction center (DI0/ RC) did not change significantly in the treatments with 100 mmol/L and 200 mmol/L NaCl solutions. ABS/ RC，TR0/ RC and the DI0/ RC first increased and then decreased in the treatment with 300 mmol/L NaCl solution except ET0/ RC had lttle variation. Glehnia littoralis had a certain abil-ity to adapt and regulate NaCl stress. |
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