ROLE OF THE FIXGHI REGION OF AZORHIZOBIUM-CAULINODANS IN FREE-LIVING AND SYMBIOTIC NITROGEN-FIXATION

被引：15

作者：

MANDON, K

KAMINSKI, PA

MOUGEL, C

DESNOUES, N

DREYFUS, B

ELMERICH, C

机构：

[1] INST PASTEUR,UNITE PHYSIOL CELLULAIRE,25 RUE DR ROUX,F-75724 PARIS 15,FRANCE

[2] INST PASTEUR,DEPT BIOTECHNOL,CNRS,URA 1300,F-75724 PARIS 15,FRANCE

[3] ORSTOM,MICROBIOL SOLS LAB,DAKAR,SENEGAMBIA

来源：

FEMS MICROBIOLOGY LETTERS | 1993年 / 114卷 / 02期

关键词：

AZORHIZOBIUM-CAULINODANS; SESBANIA-ROSTRATA; FIXN CLUSTER; FIXG; FREE-LIVING NITROGEN FIXATION;

D O I：

10.1016/0378-1097(93)90517-6

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

A 19-kb DNA region containing genes sharing homology with Rhizobium meliloti fixNOQP and fixGHI was isolated from a genomic library of Azorhizobium caulinodans. Identity of fixG was confirmed by partial nucleotide sequencing. Mutant strains in the fixGHI region were constructed by deletion or Tn5 insertions. In contrast with the situation in R. meliloti, the mutants still displayed a significant nitrogenase activity in symbiosis.

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页码：185 / 190

页数：6

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