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N-acetyltransferase 10 catalyzes RNA N4-acetylcytidine to regulate photosynthesis in rice

文献类型： 外文期刊

作者： Cai, Linjun 1 ; Li, Bin 2 ; Zhou, Qiting 1 ; Du, Juan 1 ; Yang, Wenxing 1 ; Shen, Lisha 3 ; He, Chongsheng 1 ;

作者机构： 1.Hunan Univ, Coll Biol, Hunan Key Lab Plant Funct Genom & Dev Regulat, Changsha 410082, Hunan, Peoples R China

2.Hunan Acad Agr Sci, State Key Lab Hybrid Rice, Hunan Hybrid Rice Res Ctr, Changsha, Peoples R China

3.Natl Univ Singapore, Temasek Life Sci Lab, Singapore 117604, Singapore

期刊名称：CELL REPORTS （ 影响因子：6.9； 五年影响因子：8.1 ）

ISSN： 2211-1247

年卷期： 2025 年 44 卷 3 期

页码：

收录情况： SCI

摘要： N4-acetylcytidine (ac4C) is a novel mRNA modification that enhances RNA stability and translation in mammals and plants. We previously identified ac4C in Arabidopsis, introduced by two homologs of human N-acetyltransferase 10 (NAT10). While ac4C influences leaf development in Arabidopsis, its role in rice is unclear. In this study, we identify OsNAT10 as the ac4C writer in rice. osnat10 mutants show developmental defects, including shorter roots, fewer tillers, and lower yield. Compared with wild type, ac4C-modified genes are less abundant in osnat10, particularly those related to photosynthesis. Additionally, osnat10 exhibits decreased photosynthetic capacity and reduced RNA stability and translation efficiency of ac4C target genes, like LIGHT-INDUCED RICE 1 (LIR1). Overexpressing OsLIR1 partially rescues osnat10 defects, underscoring OsNAT10's role in photosynthesis regulation. Our findings highlight ac4C's crucial function in photosynthesis and plant development, offering insights into epitranscriptomic modifications for crop improvement.

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