JIANG Yuntian,LI Yumei,ZHANG Qiuju,et al.Physiological Response of Phlox paniculata Seedlings to Salt Stress[J].Northern Horticulture,2017,41(04):89-93.[doi:10.11937/bfyy.201704020]
宿根福禄考幼苗对盐胁迫的生理响应
- Title:
- Physiological Response of Phlox paniculata Seedlings to Salt Stress
- Keywords:
- Phlox paniculata; NaCl stress; MDA; organic osmotic
- 文献标志码:
- A
- 摘要:
- 以盆栽宿根福禄考幼苗为试材，研究了不同浓度的NaCl胁迫处理对其叶片丙二醛、可溶性糖、可溶性蛋白质和游离脯氨酸含量的影响，以探讨宿根福禄考幼苗对盐胁迫的生理适应特性。结果表明：在低于120 mmol?L-1NaCl胁迫处理下，宿根福禄考幼苗丙二醛含量增加幅度并不大；当胁迫浓度超过120 mmol?L-1时，其含量骤然增加；随着NaCl胁迫浓度的升高，可溶性糖、游离脯氨酸、可溶性蛋白质含量均呈“先升高后下降”的趋势；可溶性糖和游离脯氨酸二者同步积累，共同发挥其渗透调节功能。
- Abstract:
- In order to learn the physiological adaptability of Phlox paniculata seedlings to salt stress，the effects of NaCl stress with different concentrations on the contents of malondialdehyde，soluble sugar，soluble protein and free proline in leaves were studied with potted Phlox paniculata seedlings.The results showed that the MDA content of Phlox paniculata seedlings did not remarkable increase under the stress of NaCl with concentration below 120 mmol?L-1，while its content increased sharply when NaCl concentration was more than 120 mmol?L-1.With increasing of NaCl concentration，contents of soluble sugar，soluble protein and free-proline were all increased then decreased.Soluble sugar content and free-proline content synchronously accumulated to play their osmotic adjustment functions under NaCl stress.
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备注/Memo
第一作者简介：姜云天（1975-），男，硕士，讲师，现主要从事园艺植物逆境生理等研究工作。E-mail：wwwjyt@126.com.责任作者：李玉梅（1976-），女，博士，副研究员，现主要从事植物逆境生理与生态等研究工作。E-mail：mmmlym@126.com.基金项目：通化师范学院自然科学基金资助项目（201248）；吉林省大学生创新创业训练计划资助项目（thsys1135）；吉林省科技计划资助项目（20141705）。