The heterochronic gene Oryza sativa LIKE HETEROCHROMATIN PROTEIN 1 modulates miR156b/c/i/e levels

• 作者: Guojun Dong Hongwu Bian Jiang Hu Jingfei Cheng Longbiao Guo Luhuan Ye Peipei Qi Qian Qian Shuang Ruan Wei Liu Xingming Hu Yijing Zhang Yongtao Cui Yuping Zhang
• 来源期刊: 植物学报（英文版）
• 年，卷（期）: 2020,（12）
• 所属期刊栏目: Cell and Developmental Biology
• 页码范围: 1839-1852
• 页数: 14页
• 语种: 英文
• DOI: 10.1111/jipb.12991

摘要

The juvenile-to-adult transition in plants involves changes in vegetative growth and plant architecture; the timing of this transition has important implications for ag-riculture. The microRNA miR156 regulates this transition and shoot maturation in plants. In Arabidopsis thaliana, deposi-tion of histone H3 trimethylation on lysine 27 (H3K27me3, a repressive mark) at the MIR156A/C loci is regulated by Pol-ycomb Repressive Complex 1 (PRC1) or PRC2, depending on the developmental stage. The levels of miR156 progressively decline during shoot maturation. The amount of H3K27me3 at MIR156A/C loci affects miR156 levels; however, whether this epigenetic regulation is conserved remains unclear. Here, we found that in rice (Oryza sativa), the putative PRC1 subunit LIKE HETEROCHROMATIN PROTEIN 1 (OsLHP1), with the miR156–SQUAMOSA PROMOTER BINDING PROTEIN-LIKE (SPL) module, affects developmental phase transitions. Loss of OsLHP1 function results in ectopic ex-pression of MIR156B/C/I/E, phenocopy of miR156 over-expression, and reduced H3k27me3 levels at MIR156B/C/I/E. This indicates that OsLHP1 has functionally diverged from Arabidopsis LHP1. Genetic and transcriptome analyses of wild-type, miR156b/c-overexpression, and Oslhp1-2 mutant plants suggest that OsLHP1 acts upstream of miR156 and SPL during the juvenile-to-adult transition. Therefore, mod-ifying the OsLHP1–miR156–SPL pathway may enable alter-ation of the vegetative period and plant architecture.

作者信息

序号	姓名	单位	发文数	被引次数	H指数	G指数
1	Qian Qian	中国农业科学院中国水稻研究所	3	0	0.0	0.0
2	Yongtao Cui	中国农业科学院中国水稻研究所	1	0	0.0	0.0
3	Jingfei Cheng	中国农业科学院中国水稻研究所	1	0	0.0	0.0
4	Shuang Ruan	中国农业科学院中国水稻研究所	1	0	0.0	0.0
5	Peipei Qi	中国农业科学院中国水稻研究所	1	0	0.0	0.0
6	Wei Liu	中国农业科学院中国水稻研究所	1	0	0.0	0.0
7	Hongwu Bian	中国农业科学院中国水稻研究所	1	0	0.0	0.0
8	Luhuan Ye	中国农业科学院中国水稻研究所	1	0	0.0	0.0
9	Yuping Zhang	中国农业科学院中国水稻研究所	1	0	0.0	0.0
10	Jiang Hu	中国农业科学院中国水稻研究所	1	0	0.0	0.0
11	Guojun Dong	中国农业科学院中国水稻研究所	1	0	0.0	0.0
12	Longbiao Guo	中国农业科学院中国水稻研究所	1	0	0.0	0.0
13	Yijing Zhang	中国农业科学院中国水稻研究所	1	0	0.0	0.0
14	Xingming Hu	中国农业科学院中国水稻研究所	1	0	0.0	0.0