FIONA1 Is Essential for Regulating Period Length in the Arabidopsis Circadian Clock Export

@article{citeulike:3885586, abstract = {In plants, the circadian clock controls daily physiological cycles as well as daylength-dependent developmental processes such as photoperiodic flowering and seedling growth. Here, we report that FIONA1 (FIO1) is a genetic regulator of period length in the Arabidopsis thaliana circadian clock. FIO1 was identified by screening for a mutation in daylength-dependent flowering. The mutation designated fio1-1 also affects daylength-dependent seedling growth. fio1-1 causes lengthening of the free-running circadian period of leaf movement and the transcription of various genes, including the central oscillators CIRCADIAN CLOCK-ASSOCIATED1, LATE ELONGATED HYPOCOTYL, TIMING OF CAB EXPRESSION1, and LUX ARRHYTHMO. However, period lengthening is not dependent upon environmental light or temperature conditions, which suggests that FIO1 is not a simple input component of the circadian system. Interestingly, fio1-1 exerts a clear effect on the period length of circadian rhythm but has little effect on its amplitude and robustness. FIO1 encodes a novel nuclear protein that is highly conserved throughout the kingdoms. We propose that FIO1 regulates period length in the Arabidopsis circadian clock in a close association with the central oscillator and that the circadian period can be controlled separately from amplitude and robustness. 10.1105/tpc.107.055715}, author = {Kim, Jeongsik and Kim, Yumi and Yeom, Miji and Kim, Jin-Hee and Nam, Hong G.}, citeulike-article-id = {3885586}, citeulike-linkout-0 = {http://dx.doi.org/10.1105/tpc.107.055715}, citeulike-linkout-1 = {http://www.plantcell.org/cgi/content/abstract/20/2/307}, citeulike-linkout-2 = {http://view.ncbi.nlm.nih.gov/pubmed/18281507}, citeulike-linkout-3 = {http://www.hubmed.org/display.cgi?uids=18281507}, day = {1}, doi = {10.1105/tpc.107.055715}, journal = {Plant Cell}, keywords = {clock}, month = {February}, number = {2}, pages = {307--319}, posted-at = {2009-01-14 15:00:01}, priority = {2}, title = {FIONA1 Is Essential for Regulating Period Length in the Arabidopsis Circadian Clock}, url = {http://dx.doi.org/10.1105/tpc.107.055715}, volume = {20}, year = {2008} }

TY - JOUR ID - citeulike:3885586 L3 - citeulike-article-id:3885586 N2 - In plants, the circadian clock controls daily physiological cycles as well as daylength-dependent developmental processes such as photoperiodic flowering and seedling growth. Here, we report that FIONA1 (FIO1) is a genetic regulator of period length in the Arabidopsis thaliana circadian clock. FIO1 was identified by screening for a mutation in daylength-dependent flowering. The mutation designated fio1-1 also affects daylength-dependent seedling growth. fio1-1 causes lengthening of the free-running circadian period of leaf movement and the transcription of various genes, including the central oscillators CIRCADIAN CLOCK-ASSOCIATED1, LATE ELONGATED HYPOCOTYL, TIMING OF CAB EXPRESSION1, and LUX ARRHYTHMO. However, period lengthening is not dependent upon environmental light or temperature conditions, which suggests that FIO1 is not a simple input component of the circadian system. Interestingly, fio1-1 exerts a clear effect on the period length of circadian rhythm but has little effect on its amplitude and robustness. FIO1 encodes a novel nuclear protein that is highly conserved throughout the kingdoms. We propose that FIO1 regulates period length in the Arabidopsis circadian clock in a close association with the central oscillator and that the circadian period can be controlled separately from amplitude and robustness. 10.1105/tpc.107.055715 IS - 2 JF - Plant Cell EP - 319 TI - FIONA1 Is Essential for Regulating Period Length in the Arabidopsis Circadian Clock VL - 20 SP - 307 KW - clock AU - Kim, Jeongsik AU - Kim, Yumi AU - Yeom, Miji AU - Kim, Jin-Hee AU - Nam, Hong PY - 2008/02/01/ UR - http://dx.doi.org/10.1105/tpc.107.055715 ER -