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JXB Advance Access published online on January 30, 2004
Journal of Experimental Botany, doi:10.1093/jxb/erh073
© 2004 by Oxford University Press
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Received November 18, 2003; accepted November 24, 2003
© 2004 Society for Experimental Biology

Gene note

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

David C. Logan 1*, Iain Scott 1, and Alyson K. Tobin 1

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

* To whom correspondence should be addressed. E-mail: david.logan{at}st-and.ac.uk.


  Abstract

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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