Enhanced sustainable green revolution yield via nitrogen-responsive chromatin modulation in rice

Because environmentally degrading inorganic fertilizer use underlies current worldwide cereal yields, future agricultural sustainability demands enhanced nitrogen use efficiency. We found that genome-wide promotion of histone H3 lysine 27 trimethylation (H3K27me3) enables nitrogen-induced stimulatio...

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Veröffentlicht in:	Science (American Association for the Advancement of Science) 2020-02, Vol.367 (6478)
Hauptverfasser:	Wu, Kun, Wang, Shuansuo, Song, Wenzhen, Zhang, Jianqing, Wang, Yun, Liu, Qian, Yu, Jianping, Ye, Yafeng, Li, Shan, Chen, Jianfeng, Zhao, Ying, Wang, Jing, Wu, Xiaokang, Wang, Meiyue, Zhang, Yijing, Liu, Binmei, Wu, Yuejin, Harberd, Nicholas P, Fu, Xiangdong
Format:	Artikel
Sprache:	eng
Schlagworte:	Accumulation Agricultural production Agriculture Agrochemicals Alanine Alleles Amino acids Canonical forms Cereal crops Chromatin Chromatin - metabolism Crop yield Crops Cullin Decoupling Degradation Destabilization Destruction DNA methylation Domains Dwarfism Edible Grain - genetics Efficiency Environmental impact Epistasis F-box protein Fertilization Fertilizers Food Food security Gene sequencing Genes Genetic screening Genetics Genomes Gibberellins Gibberellins - metabolism Grain Green revolution Histone H3 Histones Histones - metabolism Levels Literary Devices Lodging Lysine Methylation Modulation Mutants Mutation Nitrogen Nitrogen - metabolism Oryza - genetics Oryza - metabolism Phytohormones PII Nitrogen Regulatory Proteins - genetics PII Nitrogen Regulatory Proteins - metabolism Plant growth Plant Proteins - genetics Plant Proteins - metabolism Planting density Polymerase chain reaction Proteasome Endopeptidase Complex - metabolism Proteasomes Proteins Recruitment Ribonucleic acid Rice RNA Sustainability Sustainable agriculture Sustainable yield Transcription factors Ubiquitin-protein ligase
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Zusammenfassung:	Because environmentally degrading inorganic fertilizer use underlies current worldwide cereal yields, future agricultural sustainability demands enhanced nitrogen use efficiency. We found that genome-wide promotion of histone H3 lysine 27 trimethylation (H3K27me3) enables nitrogen-induced stimulation of rice tillering: APETALA2-domain transcription factor NGR5 (NITROGEN-MEDIATED TILLER GROWTH RESPONSE 5) facilitates nitrogen-dependent recruitment of polycomb repressive complex 2 to repress branching-inhibitory genes via H3K27me3 modification. NGR5 is a target of gibberellin receptor GIBBERELLIN INSENSITIVE DWARF1 (GID1)-promoted proteasomal destruction. DELLA proteins (characterized by the presence of a conserved aspartate-glutamate-leucine-leucine-alanine motif) competitively inhibit the GID1-NGR5 interaction and explain increased tillering of green revolution varieties. Increased NGR5 activity consequently uncouples tillering from nitrogen regulation, boosting rice yield at low nitrogen fertilization levels. NGR5 thus enables enhanced nitrogen use efficiency for improved future agricultural sustainability and food security.
ISSN:	0036-8075 1095-9203
DOI:	10.1126/science.aaz2046