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Occurrence of rhizobia in the gut of the higher termite Nasutitermes nigriceps

AutorFröhlich, Jürgen; Koustiane, Christine; Kämpfer, Peter; Rosselló-Mora, Ramón ; Valens-Vadell, Maria; Berchtold, Manfred; Kuhnigk, Thomas; Hertel, Horst; Maheshwarr, Dinesh K.; König, Helmut
Palabras claveEnsifer
Intestinal flora
Nitrogen fixation
Fecha de publicación2007
CitaciónSystematic and Applied Microbiology 30(1): 68-74 (2007)
ResumenWood-eating termites feed on a diet highly deficient in nitrogen. They must complement their diet with the aid of nitrogen-fixing bacteria. Nitrogen fixation in the gut has been demonstrated, but information about nitrogen-fixing bacteria in pure culture is scarce. From the higher termite Nasutitermes nigriceps the symbiotic bacterial strain M3A was isolated, which thrives in the hindgut contents. The Gram-negative strain exhibited similarities to the species of the genus Ensifer (including Sinorhizobium) on the basis of morphological and physiological/biochemical features. The 16S rRNA gene analysis showed the highest sequence similarity of the isolate M3A to Ensifer adhaerens (>99%; ATCC 33499). The DNA-DNA hybridization revealed a similarity of 66% with E. adhaerens (NCIMB12342T). In contrast to the type strain the isolate M3A possesses the capacity to nodulate plant roots. This is the first report on the detailed identification of a rhizobia-related strain from the intestinal tract of animals. Strain M3A has been deposited with two culture collections (DSM10169; ATCC BAA-396). © 2006 Elsevier GmbH. All rights reserved.
Identificadoresdoi: 10.1016/j.syapm.2006.03.001
issn: 0723-2020
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