Identification of nif and nod Genes in Frankia

1992 ◽  
pp. 383-399
Author(s):  
Q. S. Ma ◽  
Y. H. Cui ◽  
L. M. Chen ◽  
M. Qin ◽  
Y. L. Wang ◽  
...  
Keyword(s):  
Nod Genes

scholarly journals Long-Read Amplicon Sequencing of Nitric Oxide Dismutase (nod) Genes Reveal Diverse Oxygenic Denitrifiers in Agricultural Soils and Lake Sediments

2020 ◽  
Vol 80 (1) ◽  
pp. 243-247 ◽  
Author(s):  
Baoli Zhu ◽  
Zhe Wang ◽  
Dheeraj Kanaparthi ◽  
Susanne Kublik ◽  
Tida Ge ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Lake Sediments ◽  
Agricultural Soils ◽  
Amplicon Sequencing ◽  
Nod Genes ◽  
Long Read

Expression of the nodulation and nitrogen fixation genes in Rhizobium meliloti during development

Genome ◽  
1989 ◽  
Vol 31 (1) ◽  
pp. 354-360 ◽  
Author(s):  
San Chiun Shen ◽  
Shui Ping Wang ◽  
Guan Qiao Yu ◽  
Jia Bi Zhu
Keyword(s):  
Nitrogen Fixation ◽  
Rhizobium Meliloti ◽  
Abnormal Development ◽  
Wild Type ◽  
Free Living ◽  
Nod Genes ◽  
Nodule Initiation ◽  
Fix Genes ◽  
Nitrogen Fixation Genes

Genes that specify nodulation (nod genes) are only active in the free-living rhizobia or in the nodule initiation state of rhizobia. As soon as the repression of nod genes occurs in the bacteroids of the nodule, nifA is induced, while ntrC is inactivated and thus the nifA-mediated nif/fix genes are turned on. Limitation of available oxygen brings about the induction of nifA, which reflects the actual status of nif/fix gene activities in symbiotic state of rhizobia. Oxygen thus appears to be a major symbiotic signal to the expression of bacteroid nif/fix genes. Mutation of nifA or shortage of nifA product in wild-type rhizobia caused by the inhibition of multicopy nifH/fixA promoters leads to an abnormal development of nodules and premature degradation of bacteroids in nodules.Key words: nitrogen fixation, nodulation, nif/fix regulation, nifA mutant.

Cloning of DNA Sequences from Azospirillum Brasilense, Homologous to Rhizobium Nod Genes and Agrobacterium Vir Genes

1986 ◽  
pp. 215-218 ◽  
Author(s):  
Jos Vanderleyden ◽  
Claire Vieille ◽  
Kris Michiels ◽  
Giorgio Matassi ◽  
August Van Gool ◽  
...  
Keyword(s):  
Dna Sequences ◽  
Azospirillum Brasilense ◽  
Nod Genes ◽  
Vir Genes

Respective Roles of Common and Specific Rhizobium meliloti nod Genes in the Control of Lucerne Infection

1986 ◽  
pp. 17-28 ◽  
Author(s):  
F. Debellé ◽  
S. B. Sharma ◽  
C. Rosenberg ◽  
J. Vasse ◽  
F. Maillet ◽  
...  
Keyword(s):  
Rhizobium Meliloti ◽  
Nod Genes

Flavonoids from Vicia faba Seed Exudates

1990 ◽  
Vol 45 (9-10) ◽  
pp. 1070-1072 ◽  
Author(s):  
Francisco Tomás-Lorente ◽  
Manuela M. Garcia-Grau ◽  
Francisco A. Tomás-Barberán
Keyword(s):  
Vicia Faba ◽  
Flavonoid Glycosides ◽  
Signal Function ◽  
Ecological Role ◽  
Legume Seed ◽  
Nod Genes ◽  
Flavonoid Aglycones ◽  
Vicia Faba L ◽  
First Time ◽  
Rhizobium Nodulation

Abstract From the seed exudates of Vicia faba L. (cv. Muchamiel) the flavonoid aglycones 7,3′,4′-trihydroxyflavone, 7,4′-dihydroxyflavone, quercetin and kaempferol, and the flavonoid glycosides quercetin 7-glucoside and kaempferol 7-glucoside were identified. This is the first time that the flavonoids present in Vicia seed exudates are described. The study of the flavonoids present in legume seed and root exudates is especially important since these substances may act as chemical signals activating or inhibiting Rhizobium nodulation genes. In fact, the activating effect on Rhizobium nod genes of 7,3′,4′-trihydroxyflavone and 7,3′-dihydroxyflavone has previously been reported. It is remarkable, that these compounds increase dramatically in mature pods, and these tissues might have an additional ecological role in the signal function on Rhizobium to establish the symbiosis

scholarly journals Expression of Rhizobium meliloti nod genes in Rhizobium and Agrobacterium backgrounds.

1987 ◽  
Vol 169 (7) ◽  
pp. 3094-3098 ◽  
Author(s):  
M M Yelton ◽  
J T Mulligan ◽  
S R Long
Keyword(s):  
Rhizobium Meliloti ◽  
Nod Genes

scholarly journals An assemblage of Frankia Cluster II strains from California contains the canonical nod genes and also the sulfotransferase gene nodH

BMC Genomics ◽  
2016 ◽  
Vol 17 (1) ◽  
Author(s):  
Thanh Van Nguyen ◽  
Daniel Wibberg ◽  
Kai Battenberg ◽  
Jochen Blom ◽  
Brian Vanden Heuvel ◽  
...  
Keyword(s):  
Nod Genes

scholarly journals Induction of Bradyrhizobium japonicum common nod genes by isoflavones isolated from Glycine max

1987 ◽  
Vol 84 (21) ◽  
pp. 7428-7432 ◽  
Author(s):  
R. M. Kosslak ◽  
R. Bookland ◽  
J. Barkei ◽  
H. E. Paaren ◽  
E. R. Appelbaum
Keyword(s):  
Glycine Max ◽  
Bradyrhizobium Japonicum ◽  
Nod Genes ◽  
Common Nod Genes
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