文献类型： 外文期刊
作者： Yang, Hong 1 ; Dai, Longjun 1 ; Wei, Yongxuan 1 ; Deng, Zhi 1 ; Li, Dejun 1 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Rubber Res Inst, Minist Agr & Rural Affairs, Key Lab Biol & Genet Resources Rubber Tree, Haikou 571101, Hainan, Peoples R China
2.Chinese Acad Trop Agr Sci, Rubber Res Inst, State Key Lab Incubat Base Cultivat & Physiol Tro, Haikou 571101, Hainan, Peoples R China
关键词： Melatonin; Salinity stress; Antioxidant; Hydrogen peroxide; Transcriptome; Rubber tree
期刊名称：INDUSTRIAL CROPS AND PRODUCTS （ 影响因子：5.645； 五年影响因子：5.749 ）
ISSN： 0926-6690
年卷期： 2020 年 145 卷
页码：
收录情况： SCI
摘要： As a well-known agent, melatonin plays very important roles in animals. However, its possible function is less clear in plants, especially in rubber tree. In this study, we demonstrate that melatonin acts as a potential agent to enhance salt stress tolerance in rubber tree seedlings. Chlorophyll degradation and H2O2 accumulation in leaves of seedlings under salinity stress were significantly relieved by melatonin treatment. Transcriptome analyses suggested that melatonin was a potential antioxidant, and its exogenous application resulted in enhanced antioxidant protection mainly by regulating the genes involved in photosynthesis, ROS metabolism, flavonoids and melatonin biosynthesis. These results demonstrate that melatonin can enhance salt stress tolerance directly or indirectly by counteracting the cellular accumulation of H2O2 in rubber tree. Our findings are helpful for not only understanding melatonin's roles in salinity stress, but also providing new insights into potential utilization of melatonin against abiotic stresses in rubber tree.
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