Annals of Botany News in Brief

Cell cycle duration in the root apical meristem (RAM) of angiosperms

In plant studies it is essential to determine cell cycle duration (T). Zhukovskaya et al. have previously proposed an exponential model evaluating T in the root apical meristem (RAM) based on the dynamics of root growth, the number of cells in the RAM, and the length of fully elongated cells. Here, a global analysis of the approach was performed.

A graph

The results show that in most of the 73 angiosperm species examined, the T values obtained by this approach were nearly identical to those obtained by the much more laborious 3H-thymidine method. The ease of the approach promises its wide use.

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