首页|Rice melatonin deficiency causes premature leaf senescence via DNA methylation regulation

Rice melatonin deficiency causes premature leaf senescence via DNA methylation regulation

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In a study of DNA methylation changes in melatonin-deficient rice mutants,mutant plants showed pre-mature leaf senescence during grain-filling and reduced grain yield.Melatonin deficiency led to tran-scriptional reprogramming,especially of genes involved in chlorophyll and carbon metabolism,redox regulation,and transcriptional regulation,during dark-induced leaf senescence.Hypomethylation of mCG and mCHG in the melatonin-deficient rice mutants was associated with the expression change of both protein-coding genes and transposable element-related genes.Changes in gene expression and DNA methylation in the melatonin-deficient mutants were compensated by exogenous application of melatonin.A decreased S-adenosyl-L-methionine level may have contributed to the DNA methylation variations in rice mutants of melatonin deficiency under dark conditions.

MelatoninPremature leaf senescenceRiceDNA methylationEpigenetic regulation

Yue Lu、Ahmed Gharib、Rujia Chen、Hanyao Wang、Tianyun Tao、Zhihao Zuo、Qing Bu、Yanze Su、Yaoqing Li、Yanmo Luo、Hamdi F.El-Mowafi、Zhichao Wang、Qianfeng Huang、Shuting Wang、Yang Xu、Pengcheng Li、Chenwu Xu、Zefeng Yang

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Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Zhongshan Biological Breeding Laboratory/Key Laboratory of Plant Functional Genomics of the Ministry of Education,Agriculture College of Yangzhou University,Yangzhou 225009,Jiangsu,China

Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops,Jiangsu Key Laboratory of Crop Genetics and Physiology,Yangzhou University,Yangzhou 225009,Jiangsu,China

National Institute of Laser Enhanced Sciences(NILES),Cairo University,Giza 12613,Egypt

Rice Research Department,Field Crops Research Institute,Agricultural Research Center,Sakha,Kafr El-Sheikh 33717,Egypt

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNatural Science Foundation of Jiangsu ProvincePriority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)Seed Industry Revitalization Project of Jiangsu ProvinceShanghai Science and Technology Agriculture ProjectProject of Zhongshan Biological Breeding Laboratory

32100448320705583206114303032170636BK20210799JBGS[2021]009[2022]1-6BM2022008-029

2024

10.1016/j.cj.2024.04.004

作物学报(英文版)

作物学报(英文版)

CSTPCD
ISSN：
年,卷(期)：2024.12(3)
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