Nitrogenase structural genes are unlinked in the nonlegume symbiont Parasponia rhizobium.

K. F. Scott; B. G. Rolfe; J. Shine

doi:10.1089/dna.1983.2.141

Nitrogenase structural genes are unlinked in the nonlegume symbiont Parasponia rhizobium.

K. F. Scott, B. G. Rolfe, J. Shine

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35 Citations (Scopus)

Abstract

Several Rhizobium strains are capable of biological nitrogen fixation in symbiotic association with nonleguminous plants. The gene encoding the iron-protein component of nitrogenase (nifH) from one such strain, Parasponia Rhizobium sp. ANU289, has been isolated and completely sequenced. Unlike previously studied nitrogen-fixing prokaryotes, the Fe-protein subunit is encoded on a separate operon from other components of the nitrogenase enzyme complex. Comparative analysis of Fe-protein amino acid sequences indicates that the symbiotic nitrogen fixation phenotype in Rhizobium may have arisen on at least two separate occasions during its evolution.

Original language	English
Pages (from-to)	141-148
Number of pages	8
Journal	DNA (Mary Ann Liebert, Inc.)
Volume	2
Issue number	2
DOIs	https://doi.org/10.1089/dna.1983.2.141
Publication status	Published - 1983
Externally published	Yes

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title = "Nitrogenase structural genes are unlinked in the nonlegume symbiont Parasponia rhizobium.",

abstract = "Several Rhizobium strains are capable of biological nitrogen fixation in symbiotic association with nonleguminous plants. The gene encoding the iron-protein component of nitrogenase (nifH) from one such strain, Parasponia Rhizobium sp. ANU289, has been isolated and completely sequenced. Unlike previously studied nitrogen-fixing prokaryotes, the Fe-protein subunit is encoded on a separate operon from other components of the nitrogenase enzyme complex. Comparative analysis of Fe-protein amino acid sequences indicates that the symbiotic nitrogen fixation phenotype in Rhizobium may have arisen on at least two separate occasions during its evolution.",

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AU - Rolfe, B. G.

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AB - Several Rhizobium strains are capable of biological nitrogen fixation in symbiotic association with nonleguminous plants. The gene encoding the iron-protein component of nitrogenase (nifH) from one such strain, Parasponia Rhizobium sp. ANU289, has been isolated and completely sequenced. Unlike previously studied nitrogen-fixing prokaryotes, the Fe-protein subunit is encoded on a separate operon from other components of the nitrogenase enzyme complex. Comparative analysis of Fe-protein amino acid sequences indicates that the symbiotic nitrogen fixation phenotype in Rhizobium may have arisen on at least two separate occasions during its evolution.

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Nitrogenase structural genes are unlinked in the nonlegume symbiont Parasponia rhizobium.

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