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Applied and Environmental Microbiology, June 2009, p. 4221-4223, Vol. 75, No. 12
0099-2240/09/$08.00+0     doi:10.1128/AEM.02967-08
Copyright © 2009, American Society for Microbiology. All Rights Reserved.

Identification and Characterization of a Novel Gene Involved in the trans-Specific Nematicidal Activity of Photorhabdus luminescens LN2{triangledown}

Xuehong Qiu,1,2 Richou Han,2* Xun Yan,2 Mingxing Liu,2 Li Cao,2 Toyoshi Yoshiga,3 and Eizo Kondo3

College of Life Sciences, Sun Yat-sen University, Guangzhou 510275,1 Guangdong Entomological Institute, Guangzhou 510260, China,2 Faculty of Agriculture, Saga University, Saga 840-8502, Japan3

Received 31 December 2008/ Accepted 10 April 2009

Photorhabdus luminescens subsp. akhurstii LN2 from Heterorhabditis indica LN2 showed nematicidal activity against axenic Heterorhabditis bacteriophora H06 infective juveniles (IJs). Transposon mutagenesis identified an LN2 mutant that supports the growth of H06 nematodes. Tn5 disrupted the namA gene, encoding a novel 364-residue protein and involving the nematicidal activity. The green fluorescent protein-labeled namA mutant was unable to colonize the intestines of H06 IJs.

* Corresponding author. Mailing address: Guangdong Entomological Institute, Guangzhou 510260, China. Phone: 86-20-89103943. Fax: 86-20-84191089. E-mail: richou-han{at}163.net

{triangledown} Published ahead of print on 17 April 2009.

Applied and Environmental Microbiology, June 2009, p. 4221-4223, Vol. 75, No. 12
0099-2240/09/$08.00+0     doi:10.1128/AEM.02967-08
Copyright © 2009, American Society for Microbiology. All Rights Reserved.





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