热带亚热带植物学报2018，Vol.26Issue(3)：241-248,8.DOI:10.11926/jtsb.3807
NaCl胁迫对秋茄幼苗根系抗氧化系统的影响
Effect of NaCl Stress on Antioxidant System in Kandelia candel Roots
摘要
Abstract
In order to understand the response of antioxidant system in roots of Kandelia candel seedlings to salt stress, sixty-day-old mangrove Kandelia candel seedlings cultured in sand with Hoagland solution were treated with 0, 200, 400 and 600 mmol L–1NaCl for 1, 3, 5, and 7 days, respectively. The results showed that the contents of O2-.and H2O2remained low level treated with 200 and 400 mmol L–1NaCl for the same days, but increased significantly under 600 mmol L–1NaCl. MDA content remained stable under 200 and 400 mmol L–1NaCl compared to control (0 mmol L–1NaCl), while increased remarkably under 600 mmol L–1NaCl. The activities of SOD, POD, CAT, APX, and GR increased at first and then decreased with increment of NaCl concentration treated for the same days. The activities of these enzymes were significantly higher than those in control treated for 3 and 5 days, but they were significantly lower than those in control treated with 600 mmol L–1NaCl for 7 days. The contents of AsA and GSH were significantly higher than those in control. Therefore, it was suggested that Kandelia candel roots could improve the resistance to salt stress through strong antioxidant system to scavenging active oxygen.关键词
秋茄/根系/NaCl/抗氧化系统Key words
Kandelia candel/Root/NaCl stress/Antioxidant system引用本文复制引用
邢建宏,潘德灼,谭芳林,陈伟..NaCl胁迫对秋茄幼苗根系抗氧化系统的影响[J].热带亚热带植物学报,2018,26(3):241-248,8.基金项目
林业公益性行业科研专项经费(201504415) （201504415）
福建省自然科学基金项目(2014J01137) （2014J01137）
福建农林大学科技创新专项基金(CXZX2017141)资助 This work was supported by the Forestry Scientific Research Projects in Public Interest of China(Grant No.201504415),the Natural Science Foundation of Fujian Province,China(Grant No.2014J01137),and the Science and Technology Innovation Project of Fujian Agriculture and Forestry University(Grant No.CXZX2017141). （CXZX2017141）
