PMID- 29086456 OWN - NLM STAT- MEDLINE DCOM- 20180801 LR - 20180815 IS - 1365-313X (Electronic) IS - 0960-7412 (Linking) VI - 93 IP - 1 DP - 2018 Jan TI - TAF15b, involved in the autonomous pathway for flowering, represses transcription of FLOWERING LOCUS C. PG - 79-91 LID - 10.1111/tpj.13758 [doi] AB - TATA-binding protein-associated factors (TAFs) are general transcription factors within the transcription factor IID (TFIID) complex, which recognizes the core promoter of genes. In addition to their biochemical function, it is known that several TAFs are involved in the regulation of developmental processes. In this study, we found that TAF15b affects flowering time, especially through the autonomous pathway (AP) in Arabidopsis. The mutant taf15b shows late flowering compared with the wild type plant during both long and short days, and vernalization accelerates the flowering time of taf15b. In addition, taf15b shows strong upregulation of FLOWERING LOCUS C (FLC), a flowering repressor in Arabidopsis, and the flc taf15b double mutant completely offsets the late flowering of taf15b, indicating that TAF15b is a typical AP gene. The taf15b mutant also shows increased transcript levels of COOLAIR, an antisense transcript of FLC. Consistently, chromatin immunoprecipitation (ChIP) analyses showed that the TAF15b protein is enriched around both sense and antisense transcription start sites of the FLC locus. In addition, co-immunoprecipitation showed that TAF15b interacts with RNA polymerase II (Pol II), while ChIP showed increased enrichment of the phosphorylated forms, both serine 2 (Ser2) and Ser5, of the C-terminal domain of Pol II at the FLC locus, which is indicative of transcriptional elongation. Finally, taf15b showed higher enrichment of the active histone marker, H3K4me3, on FLC chromatin. Taken together, our results suggest that TAF15b affects flowering time through transcriptional repression of FLC in Arabidopsis. CI - (c) 2017 The Authors The Plant Journal (c) 2017 John Wiley & Sons Ltd. FAU - Eom, Hyunjoo AU - Eom H AD - School of Biological Sciences, Seoul National University, Seoul, 08826, Korea. AD - Center for RNA Research, Institute for Basic Science, Seoul, 08826, Korea. FAU - Park, Su Jung AU - Park SJ AD - Department of Plant Biotechnology, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, 61186, Korea. FAU - Kim, Min Kyung AU - Kim MK AD - Department of Plant Biotechnology, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, 61186, Korea. FAU - Kim, Hoyeun AU - Kim H AD - School of Biological Sciences, Seoul National University, Seoul, 08826, Korea. FAU - Kang, Hunseung AU - Kang H AD - Department of Plant Biotechnology, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, 61186, Korea. FAU - Lee, Ilha AU - Lee I AD - School of Biological Sciences, Seoul National University, Seoul, 08826, Korea. AD - Plant Genomics and Breeding Institute, Seoul National University, Seoul, 08826, Korea. LA - eng SI - GENBANK/GQ352646 SI - GENBANK/GQ342259 SI - GENBANK/NP_053733 SI - GENBANK/NP_004951 SI - GENBANK/NP_631961 PT - Journal Article DEP - 20171130 PL - England TA - Plant J JT - The Plant journal : for cell and molecular biology JID - 9207397 RN - 0 (Arabidopsis Proteins) RN - 0 (Chromatin) RN - 0 (FLF protein, Arabidopsis) RN - 0 (Histones) RN - 0 (MADS Domain Proteins) RN - 0 (Repressor Proteins) RN - 0 (TAF15b protein, Arabidopsis) RN - 0 (TATA-Binding Protein Associated Factors) RN - EC 2.7.7.- (RNA Polymerase II) SB - IM MH - Arabidopsis/*genetics/growth & development/physiology MH - Arabidopsis Proteins/genetics/*metabolism MH - Chromatin/genetics MH - Chromatin Immunoprecipitation MH - Flowers/genetics/growth & development/physiology MH - *Gene Expression Regulation, Plant MH - Histones/genetics MH - MADS Domain Proteins/genetics/*metabolism MH - Mutation MH - Promoter Regions, Genetic/genetics MH - RNA Polymerase II/genetics/metabolism MH - Repressor Proteins/genetics/metabolism MH - TATA-Binding Protein Associated Factors/genetics/*metabolism MH - Time Factors MH - Up-Regulation OTO - NOTNLM OT - Arabidopsis thaliana OT - FLOWERING LOCUS C (FLC) OT - RNA polymerase II OT - TBP-associated factor 15b (TAF15b) OT - autonomous pathway OT - flowering time OT - transcriptional regulation EDAT- 2017/11/01 06:00 MHDA- 2018/08/02 06:00 CRDT- 2017/11/01 06:00 PHST- 2017/08/17 00:00 [received] PHST- 2017/09/26 00:00 [revised] PHST- 2017/10/25 00:00 [accepted] PHST- 2017/11/01 06:00 [pubmed] PHST- 2018/08/02 06:00 [medline] PHST- 2017/11/01 06:00 [entrez] AID - 10.1111/tpj.13758 [doi] PST - ppublish SO - Plant J. 2018 Jan;93(1):79-91. doi: 10.1111/tpj.13758. Epub 2017 Nov 30.