Rhythms of plant growth and leaf movement are well-known in a historical literature (See Charles R. Darwin, The Power of movement in plants, 1880). In the past two decades, many researchers have employed this phenomena to measure the circadian rhythms in Arabidopsis (Dowson-Day MJ and Millar AJ, 1999: Swarup K et al., 1999: Eriksson ME et al., 2003: Michael TP et al., 2003: Edwards KD et al., 2005: Hanano S and Davis SJ, 2005). Here I show the leaf movement rhythms in Arabidopsis. Noteworthy, these plants exhibit rhythmic growth with different phases (published in Hanano S et al., 2008). The trace of leaf positions was shown in Figure 2 in the article described above. If you are interested in this analysis, please see the reference (Edwards KD and Millar AJ 2007).
Left, wild-type plants: Right, an out of phase mutant.