Exogenous Serotonin Improves Salt Tolerance in Rapeseed (Brassica napus L.) Seedlings

文献类型： 外文期刊

第一作者： Liu, Yue

作者： Liu, Yue;Ding, Xiaoyu;Lv, Yan;Cheng, Yong;Yan, Lei;Tian, Shanshan;Zou, Xiling;Li, Chunsheng

作者机构：

关键词： serotonin; Brassica napus L.(rapeseed); salinity; seedling

期刊名称：AGRONOMY-BASEL （ 影响因子：3.417； 五年影响因子：3.64 ）

ISSN：

年卷期： 2021 年 11 卷 2 期

页码：

收录情况： SCI

摘要： Serotonin is a well-known agent that plays various roles in animals, and is little known in plants. In this study, the effect of exogenous serotonin was tested on Brassica napus L. (rapeseed) under salt stress. The results revealed that exogenous application of 200 mu mol/L serotonin had the best protection under salinity. Exogenous serotonin effectively alleviated the growth inhibition of seedlings caused by salinity, and significantly promoted the accumulation of the fresh and dry weights of roots and shoots. Besides, although the H2O2 and malondialdehyde (MDA) contents were raised under salinity, they were reduced by exogenous serotonin. The chlorophyll content was decreased under salinity, and was increased by exogenous serotonin. Under salinity, serotonin effectively activated antioxidant enzyme system through improving the catalase (CAT), superoxide dismutase (SOD), and peroxidase (POD) activities, and the expression of POD7, CAT3 and Cu-SOD genes was also up-regulated. The results also revealed exogenous serotonin increased the solute content by promoting the accumulation of soluble sugar and protein. In conclusion, salinity caused a toxicity to seedlings through oxidative damage to chlorophyll and cell membrane integrity, and serotonin possessed the ability of scavenging reactive oxygen species, osmotic pressure regulation and promoting growth, thus alleviating salinity of rape seedlings.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序