Reference health
Nitrogen fixation genes (nif K,D,H) in the filamentous nonheterocystous cyanobacteriumPlectonema boryanum do not rearrange
21/21 checkable references clean · checked 2026-07-23
Every reference with a DOI in the deposited reference list resolved to a known work in Crossref or DataCite at the dated check, and none carried a retraction, withdrawal, or removal notice.
6 without a DOI — not checked. A reference deposited without a DOI is never matched by title or guessed at; it stays outside the checked set, and this line discloses that.
The 21 checked references that resolve
resolves10.1128/JB.156.1.251-256.1983
Genetic and physical map of the structural genes (nifH,D,K) coding for the nitrogenase complex of Rhodopseudomonas capsulata
resolves10.1128/JB.149.1.221-228.1982
Clustering of nitrogen fixation (nif) genes in Rhizobium meliloti
resolves10.1007/BF02704627
Extracellular polypeptides ofAnabaena L-31: Evidence for their role in regulation of heterocyst formation
resolves10.1002/j.1460-2075.1983.tb01526.x
Cloning of the symbiotic region of Rhizobium leguminosarum: the nodulation genes are between the nitrogenase genes and a nifA‐like gene
resolves10.1038/314419a0
Rearrangement of nitrogen fixation genes during heterocyst differentiation in the cyanobacterium Anabaena
resolves10.1007/BF00016063
Insertion and deletion mutations within the nif region of Rhizobium japonicum
resolves10.3109/10408418709104434
Molecular Aspects of Nitrogen Fixation by Photosynthetic Prokaryotes
resolves10.1146/annurev.mi.40.100186.002521
Organization of the Genes for Nitrogen Fixation in Photosynthetic Bacteria and Cyanobacteria
resolves10.1016/0168-9525(86)90258-1
Developmental rearrangement of cyanobacterial nitrogen-fixation genes
resolves10.1007/BF00330980
Cloning and organisation of some genes for nitrogen fixation from Azotobacter chroococcum and their expression in Klebsiella pneumoniae
resolves10.1007/BF00020630
Different organization of nif genes in nonheterocystous and heterocystous cyanobacteria
resolves10.1128/JB.155.1.427-431.1983
The structural nif genes of the cyanobacteria Gloeothece sp. and Calothrix sp. share homology with those of Anabaena sp., but the Gloeothece genes have a different arrangement
resolves10.1016/0092-8674(86)90013-9
Identification and sequence of a gene required for a developmentally regulated DNA excision in anabaena
resolves10.1073/pnas.77.1.186
Identification of blue-green algal nitrogen fixation genes by using heterologous DNA hybridization probes
resolves10.1073/pnas.77.11.6476
Nucleotide sequence of a cyanobacterial
<i>nifH</i>
gene coding for nitrogenase reductase
resolves10.1016/S0021-9258(18)33636-6
Isolation and physical mapping of nitrogen fixation genes from the cyanobacterium Anabaena 7120.
resolves10.1093/nar/12.22.8329
Structural analysis of the genes encoding the molybdenum-iron protein of nitrogenase in the<i>Parasponia rhizobium</i>strain ANU289
The 6 references without a DOI — listed, not checked
no DOI — not checkedApte S K and Thomas J 1984 Effect of sodium on nitrogen fixation inAnabaena torulosa andPlectonema boryanum.J. Gen. Microbiol. 130: 1161–1168
no DOI — not checkedBarnum S R and Gendel S M Organisation ofnif H,D,K in the nonheterocystous filamentous cyanobacteriumPlectonema boryanum. InNitrogen fixation research progress (eds) H J Evans, P J Bottomley and W E Newton (Dordrecht: Martinus Nijhoff) p. 516
no DOI — not checkedDamerval T, Franche C, Rippka R and Cohen-Bazire G 1985 Rearrangement ofnif structural genes inNostoc PCC 7906. InNitrogen fixation research progress (eds) H J Evans, P J Bottomley and W E Newton (Dordrecht: Martinus Nijhoff) p. 517
no DOI — not checkedDixon R A 1984 The genetic complexity of nitrogen fixation.J. Gen. Microbiol. 130: 2745–2756
no DOI — not checkedManiatis T, Fritsch E F and Sambrook J 1982Molecular cloning: a laboratory manual (Cold Spring Harbor: Cold Spring Harbor Laboratory)
no DOI — not checkedMerrick M, Filser M, Dixon R, Elmerich C, Sibold L and Houmard J 1980 The use of translocatable genetic elements to construct a fine structure map of theKlebsiella pneumoniae nitrogen fixation (nif) gene cluster.J. Gen. Microbiol. 117: 509–520
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