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Biochem Soc Trans. 2010 Jun;38(3):833-8. doi: 10.1042/BST0380833.

Motoring around the plant cell: insights from plant myosins.

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  • 1School of Life Sciences, Oxford Brookes University, Gipsy Lane, Oxford, OX3 0BP, UK. isparkes@brookes.ac.uk

Abstract

Organelle movement in plants cells is extremely dynamic. Movement is driven by the acto-myosin system. Higher plant myosins fall into two classes: classes XI and VIII. Localization studies have highlighted that myosins are present throughout the cytosol, label motile puncta and decorate the nuclear envelope and plasma membrane. Functional studies through expression of dominant-negative myosin variants, RNAi (RNA interference) and T-DNA insertional analysis have shown that class XI myosins are required for organelle movement. Intriguingly, organelle movement is also linked to Arabidopsis growth and development. The present review tackles current findings relating to plant organelle movement and the role of myosins.

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