01894nas a2200433   4500000000100000000000100001008004100002260000900043653002100052653001600073653002100089653003000110653003800140653001700178653002300195653003600218653001700254653001600271653001200287653003000299653001900329653003900348653002400387100002100411700002000432700001700452700002700469700001900496700001500515700001700530700001700547700001400564700001700578245013800595300001100733490000600744520069600750022001401446       2011                            d  c201110aCircadian Clocks10aArabidopsis10aCircadian Rhythm10aGene Expression Profiling10aGene Expression Regulation, Plant10aGenes, Plant10aIndoleacetic Acids10aMetabolic Networks and Pathways10aOryza sativa10aPhotoperiod10aPopulus10aPromoter Regions, Genetic10aRNA, Messenger10aRegulatory Sequences, Nucleic Acid10aSignal Transduction1 aSergei Filichkin1 aGhislain Breton1 aHenry Priest1 aPalitha Dharmawardhana1 aPankaj Jaiswal1 aSamuel Fox1 aTodd Michael1 aJoanne Chory1 aSteve Kay1 aTodd Mockler00aGlobal profiling of rice and poplar transcriptomes highlights key conserved circadian-controlled pathways and cis-regulatory modules.  ae169070 v63 aCircadian clocks provide an adaptive advantage through anticipation of daily and seasonal environmental changes. In plants, the central clock oscillator is regulated by several interlocking feedback loops. It was shown that a substantial proportion of the Arabidopsis genome cycles with phases of peak expression covering the entire day. Synchronized transcriptome cycling is driven through an extensive network of diurnal and clock-regulated transcription factors and their target cis-regulatory elements. Study of the cycling transcriptome in other plant species could thus help elucidate the similarities and differences and identify hubs of regulation common to monocot and dicot plants.  a1932-6203