title: Exogenous spermidine alleviates oxidative damage and reduce yield loss in rice submerged at tillering stage.
abstract: To figure out whether spermidine (Spd) can alleviate oxidative damage on rice (Oryza sativa L.) caused by submergence stress, Ningjing 3 was used in this study. The results showed that, spraying Spd on rice leaves at a concentration of 0.5 mM promoted the growth recovery of rice after drainage, such as green leaves, tillers, and aboveground dry mass. According to physiological analysis, Spd accelerate restored chlorophylls damage by submergence, and decreased the rate of [Formula: see text] generation and H2O2 content, inhibited submergence-induced lipid peroxidation. Spd also helped to maintain antioxidant enzyme activities after drainage, such as superoxide dismutase, peroxidase, and GR, which ultimately improved the recovery ability of submerged rice. With the effect of Spd, the rice yields increased by 12.1, 17.9, 13.5, and 18.0%, of which submerged for 1, 3, 5, 7 days, respectively. It is supposed that exogenous Spd really has an alleviate effect on submergence damage and reduce yield loss of rice.
authors.affiliation: College of Agronomy, Nanjing Agricultural University Nanjing, China ; Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture Nanjing, China ; Jiangsu Collaborative Innovation Center for Modern Crop Production Nanjing, China.
authors.forename: Ming
authors.initials: M
authors.lastname: Liu
authors.affiliation: College of Agronomy, Nanjing Agricultural University Nanjing, China ; Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture Nanjing, China ; Jiangsu Collaborative Innovation Center for Modern Crop Production Nanjing, China.
authors.forename: Meijie
authors.initials: M
authors.lastname: Chu
authors.affiliation: College of Agronomy, Nanjing Agricultural University Nanjing, China ; Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture Nanjing, China ; Jiangsu Collaborative Innovation Center for Modern Crop Production Nanjing, China.
authors.forename: Yanfeng
authors.initials: Y
authors.lastname: Ding
authors.affiliation: College of Agronomy, Nanjing Agricultural University Nanjing, China ; Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture Nanjing, China ; Jiangsu Collaborative Innovation Center for Modern Crop Production Nanjing, China.
authors.forename: Shaohua
authors.initials: S
authors.lastname: Wang
authors.affiliation: College of Agronomy, Nanjing Agricultural University Nanjing, China ; Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture Nanjing, China ; Jiangsu Collaborative Innovation Center for Modern Crop Production Nanjing, China.
authors.forename: Zhenghui
authors.initials: Z
authors.lastname: Liu
authors.affiliation: College of Agronomy, Nanjing Agricultural University Nanjing, China ; Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture Nanjing, China ; Jiangsu Collaborative Innovation Center for Modern Crop Production Nanjing, China.
authors.forename: She
authors.initials: S
authors.lastname: Tang
authors.affiliation: College of Agronomy, Nanjing Agricultural University Nanjing, China ; Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture Nanjing, China ; Jiangsu Collaborative Innovation Center for Modern Crop Production Nanjing, China.
authors.forename: Chengqiang
authors.initials: C
authors.lastname: Ding
authors.affiliation: College of Agronomy, Nanjing Agricultural University Nanjing, China ; Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture Nanjing, China ; Jiangsu Collaborative Innovation Center for Modern Crop Production Nanjing, China.
authors.forename: Ganghua
authors.initials: G
authors.lastname: Li
keywords: exogenous spermidine; physiological characteristics; rice; submergence stress; tillering stage