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What's New in the Plant Cell Cycle?

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Progress in Botany

Part of the book series: Progress in Botany ((BOTANY,volume 70))

The cell cycle comprises mitosis, post-mitotic interphase (G1), DNA synthetic phase (S-phase), post-synthetic phase (G2) and mitosis (M). In this review, new papers on the plant cell cycle (2007–2008), where the authors have focused on the critical transitions of the plant cell cycle, G1/S and G2/M, have been highlighted. Interestingly, disruption of one subset of cyclin-dependent protein kinases (a CDK B-type) disrupts the normal functioning of shoot but not root apical meristems in Arabidopsis. XAL1 is an agamous-like protein that has a differential role in roots compare with shoots; xal1 mutant alleles have reduced root meristem size and lengthened cell cycles. E2F proteins are transcription factors that drive cells into S-phase. E2Fc may be targeted for degradation by the molecular machinery leading to the 26S proteasome. The Retinoblastoma (Rb) protein is a negative regulator of E2F. New evidence is also presented whereby starving plant cells of sucrose did not affect expression of Rb which would be consistent with an arrest of those cells in G1 in these conditions. Dynamin-related proteins are important at cytokinesis, and recent evidence suggests that one subset plays a crucial role in cell wall synthesis. These new papers are reviewed against a background of what is currently known about regulation of the plant cell cycle.

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  1. School of Biosciences, Cardiff University, Cardiff CF10 3TL, UK

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Ulrich Lüttge Wolfram Beyschlag Burkhard Büdel Dennis Francis

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Francis, D. (2009). What's New in the Plant Cell Cycle?. In: Lüttge, U., Beyschlag, W., Büdel, B., Francis, D. (eds) Progress in Botany. Progress in Botany, vol 70. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-68421-3_2

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