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Journal of Bacteriology, July 2009, p. 4681-4686, Vol. 191, No. 14
0021-9193/09/$08.00+0     doi:10.1128/JB.00318-09
Copyright © 2009, American Society for Microbiology. All Rights Reserved.

The Sinorhizobium meliloti LpxXL and AcpXL Proteins Play Important Roles in Bacteroid Development within Alfalfa{triangledown}

Andreas F. Haag,1 Silvia Wehmeier,1 Sebastian Beck,2 Victoria L. Marlow,1,2 Vivien Fletcher,1 Euan K. James,3 and Gail P. Ferguson1*

School of Medicine & Dentistry, Institute of Medical Sciences, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD, United Kingdom,1 Institute of Cell Biology, School of Biological Sciences, King's Buildings, University of Edinburgh, Edinburgh EH9 3JR, United Kingdom,2 College of Life Sciences, University of Dundee, Dundee DD1 5EH, United Kingdom3

Received 9 March 2009/ Accepted 2 May 2009

Free-living Sinorhizobium meliloti lpxXL and acpXL mutants lack lipid A very-long-chain fatty acids (VLCFAs) and have reduced competitiveness in alfalfa. We demonstrate that LpxXL and AcpXL play important but distinct roles in bacteroid development and that LpxXL is essential for the modification of S. meliloti bacteroid lipid A with VLCFAs.

* Corresponding author. Mailing address: School of Medicine & Dentistry, Institute of Medical Sciences, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD, United Kingdom. Phone: 44 1224 559147. Fax: 44 1224 555766. E-mail: g.ferguson{at}abdn.ac.uk

{triangledown} Published ahead of print on 8 May 2009.

Journal of Bacteriology, July 2009, p. 4681-4686, Vol. 191, No. 14
0021-9193/09/$08.00+0     doi:10.1128/JB.00318-09
Copyright © 2009, American Society for Microbiology. All Rights Reserved.





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