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Melatonin Delays Leaf Senescence and Enhances Salt Stress Tolerance in Rice
Chengzhen Liang,Guangyong Zheng,Wenzhen Li,Yiqin Wang,Bin Hu,Hongru Wang,Hongkai Wu,Yangwen Qian,Xin-Guang Zhu,Duan-Xian Tan,Shou-Yi Chen and Chengcai Chu
Journal of Pineal Research
Abstract
Melatonin, an antioxidant in both animals and plants, has been reported to have beneficial effects on the aging process. It was also suggested to play a role in extending longevity and enhancing abiotic stress resistance in plant. In this study, we demonstrate that melatonin acts as a potent agent to delay leaf senescence and cell death in rice. Treatments with melatonin significantly reduced chlorophyll degradation, suppressed the transcripts of senescence-associated genes, delayed the leaf senescence, and enhanced salt stress tolerance. Genome-wide expression profiling by RNA sequencing reveals that melatonin is a potent free radical scavenger, and its exogenous application results in enhanced antioxidant protection. Leaf cell death in noe1, a mutant with over-produced H2O2, can be relieved by exogenous application of melatonin. These data demonstrate that melatonin delays the leaf senescence and cell death, and also enhances abiotic stress tolerance via directly or indirectly counteracting the cellular accumulation of H2O2. Keywords:Melatonin;leaf senescence;cell death;hydrogen peroxide;transcriptome;rice
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论文编号: |
DOI:10.1111/jpi.12243 |
论文题目: |
Melatonin Delays Leaf Senescence and Enhances Salt Stress Tolerance in Rice |
英文论文题目: |
Melatonin Delays Leaf Senescence and Enhances Salt Stress Tolerance in Rice |
第一作者: |
Chengzhen Liang,Guangyong Zheng,Wenzhen Li,Yiqin Wang,Bin Hu,Hongru Wang,Hongkai Wu,Yangwen Qian,Xin-Guang Zhu,Duan-Xian Tan,Shou-Yi Chen and Chengcai Chu |
英文第一作者: |
Chengzhen Liang,Guangyong Zheng,Wenzhen Li,Yiqin Wang,Bin Hu,Hongru Wang,Hongkai Wu,Yangwen Qian,Xin-Guang Zhu,Duan-Xian Tan,Shou-Yi Chen and Chengcai Chu |
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2015-04-27 |
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摘要: |
Melatonin, an antioxidant in both animals and plants, has been reported to have beneficial effects on the aging process. It was also suggested to play a role in extending longevity and enhancing abiotic stress resistance in plant. In this study, we demonstrate that melatonin acts as a potent agent to delay leaf senescence and cell death in rice. Treatments with melatonin significantly reduced chlorophyll degradation, suppressed the transcripts of senescence-associated genes, delayed the leaf senescence, and enhanced salt stress tolerance. Genome-wide expression profiling by RNA sequencing reveals that melatonin is a potent free radical scavenger, and its exogenous application results in enhanced antioxidant protection. Leaf cell death in noe1, a mutant with over-produced H2O2, can be relieved by exogenous application of melatonin. These data demonstrate that melatonin delays the leaf senescence and cell death, and also enhances abiotic stress tolerance via directly or indirectly counteracting the cellular accumulation of H2O2. Keywords:Melatonin;leaf senescence;cell death;hydrogen peroxide;transcriptome;rice
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英文摘要: |
Melatonin, an antioxidant in both animals and plants, has been reported to have beneficial effects on the aging process. It was also suggested to play a role in extending longevity and enhancing abiotic stress resistance in plant. In this study, we demonstrate that melatonin acts as a potent agent to delay leaf senescence and cell death in rice. Treatments with melatonin significantly reduced chlorophyll degradation, suppressed the transcripts of senescence-associated genes, delayed the leaf senescence, and enhanced salt stress tolerance. Genome-wide expression profiling by RNA sequencing reveals that melatonin is a potent free radical scavenger, and its exogenous application results in enhanced antioxidant protection. Leaf cell death in noe1, a mutant with over-produced H2O2, can be relieved by exogenous application of melatonin. These data demonstrate that melatonin delays the leaf senescence and cell death, and also enhances abiotic stress tolerance via directly or indirectly counteracting the cellular accumulation of H2O2. Keywords:Melatonin;leaf senescence;cell death;hydrogen peroxide;transcriptome;rice
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刊物名称: |
Journal of Pineal Research |
英文刊物名称: |
Journal of Pineal Research |
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Chengzhen Liang,Guangyong Zheng,Wenzhen Li,Yiqin Wang,Bin Hu,Hongru Wang,Hongkai Wu,Yangwen Qian,Xin-Guang Zhu,Duan-Xian Tan,Shou-Yi Chen and Chengcai Chu. Melatonin Delays Leaf Senescence and Enhances Salt Stress Tolerance in Rice. Journal of Pineal Research. DOI:10.1111/jpi.12243 |
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