Correlations of rythmic features, growth and proton flux

While the above comparison of pH and growth do not exhibit any significant corelations of growth and proton flux, we have demonstrated dramatic correlations and offsets of the timing of internal and external calcium concentration and growth during pollen tube development.  For a discussion and list of references on rhythms we have studied see Feijo et al. 2001. Bioessays 23: 86-94.