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JXB Advance Access originally published online on January 30, 2004
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Journal of Experimental Botany, Vol. 55, No. 397, pp. 783-785, March 1, 2004
© 2004 Oxford University Press

GENE NOTE

ADL2a, like ADL2b, is involved in the control of higher plant mitochondrial morphology*

Received 18 November 2003; Accepted 24 November 2003

David C. Logan, Iain Scott and Alyson K. Tobin

Sir Harold Mitchell Building, School of Biology, University of St Andrews, St Andrews, Fife KY16 9TH, UK

*See note added in proof on page 3. {dagger} To whom correspondence should be addressed. E-mail: david.logan{at}st-and.ac.uk

A mitochondrial–GFP construct was used to tag mitochondria fluorescently in a T-DNA knockout line for the Arabidopsis dynamin ADL2a. Visualization of mitochondria in vivo demonstrated that disruption of ADL2a affected mitochondrial morphology. Mitochondria in the mutant had a complex morphology; occasionally large spherical organelles could be seen, but, more frequently, the mitochondria adopted a tubular morphology with many constrictions along their length. Mitochondria in the mutant also frequently possessed long protuberances that were named matrixules, extending to many micrometres in length.

Key words: Dynamin, mitochondrial division, morphology, organelle fission.


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