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タイトル: | Light-dependent destabilization of PHL in Arabidopsis |
著者: | Endo, Motomu Kudo, Daiki Koto, Tomoko Shimizu, Hanako Araki, Takashi |
著者名の別形: | 遠藤, 求 |
キーワード: | Arabidopsis flowering florigen phytochrome photoperiod FT CO phyB PHL |
発行日: | 10-Mar-2014 |
出版者: | Landes Bioscience |
誌名: | Plant Signaling & Behavior |
巻: | 9 |
号: | 2 |
論文番号: | e28118 |
抄録: | Plants sense environmental stimuli such as light to regulate their flowering time. In Arabidopsis, phytochrome B (phyB) is the major photoreceptor that perceives red and far-red light, and destabilizes transcriptional regulator CONSTANS (CO) protein. However the mechanism that links photoreceptor and CO protein degradation is largely unknown. We recently showed that PHYTOCHROME-DEPENDENT LATE-FLOWERING (PHL) protein inhibits phyB signaling through direct protein-protein interaction. Here, we report that light exposure destabilizes PHL protein as is the case with CO. Fluorescence from PHL-YFP fusion protein expressed under the control of Cauliflower Mosaic Virus (CaMV) 35S promoter (35S::PHL-YFP) almost disappeared after four-hour treatment of white light. Furthermore, the similar results were also obtained from the analysis of PHL-GUS fusion protein expressed by PHL promoter (PHLpro::PHL-GUS phl-1). These results highlight the importance of post-transcriptional regulation in phyB-mediated flowering regulation and will give us hints how phyB regulates CO protein amount. |
著作権等: | © 2014 Landes Bioscience この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 This is not the published version. Please cite only the published version. |
URI: | http://hdl.handle.net/2433/187356 |
DOI(出版社版): | 10.4161/psb.28118 |
PubMed ID: | 24614229 |
出現コレクション: | 学術雑誌掲載論文等 |
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