Details of specific changes in transcript levels, metabolites and enzyme activities during the diurnal cycle and an extended night. Changes in specific transcripts, enzyme activities and metabolites in rosettes of Arabidopsis Col0 WT plants (WT diurnal) and pgm (pgm diurnal) throughout a day and night cycle, and in WT transferred to an extended night. (a) Glycerolipid metabolism: levels of transcripts encoding glycerol-3P dehydrogenase (At5g40610) and fatty acid desaturase 6 (At4g30950), activity of glycerol-3P dehydrogenase, and levels of glycerol-3P and palmitolenate. (b) Inositol metabolism: levels of transcripts encoding inositol oxidase (At5g56640, At4g26260 and At2g19800), and inositol levels. FW, fresh weight.