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N6-Methyladenosine RNA Modification Regulates Shoot Stem Cell Fate in Arabidopsis

2016; Elsevier BV; Volume: 38; Issue: 2 Linguagem: Inglês

10.1016/j.devcel.2016.06.008

1878-1551

Lisha Shen, Zhe Liang, Xiaofeng Gu, Ying Chen, Zhi Wei Norman Teo, Xingliang Hou, Weiling Maggie Cai, Peter C. Dedon, Lu Liu, Hao Yu,

Cancer-related gene regulation

Summary N 6 -Methyladenosine (m 6 A) represents the most prevalent internal modification on mRNA and requires a multicomponent m 6 A methyltransferase complex in mammals. How their plant counterparts determine the global m 6 A modification landscape and its molecular link to plant development remain unknown. Here we show that FKBP12 INTERACTING PROTEIN 37 KD (FIP37) is a core component of the m 6 A methyltransferase complex, which underlies control of shoot stem cell fate in Arabidopsis . The mutants lacking FIP37 exhibit massive overproliferation of shoot meristems and a transcriptome-wide loss of m 6 A RNA modifications. We further demonstrate that FIP37 mediates m 6 A RNA modification on key shoot meristem genes inversely correlated with their mRNA stability, thus confining their transcript levels to prevent shoot meristem overproliferation. Our results suggest an indispensable role of FIP37 in mediating m 6 A mRNA modification, which is required for maintaining the shoot meristem as a renewable source for continuously producing all aerial organs in plants.