Results 21 to 30 of about 15,011 (174)

Long-term Impact of sewage sludge application on rhizobium leguminosarum biovar trifolii: an evaluation using meta-analysis [PDF]

open access: yes, 2016
The Long-Term Sludge Experiment (LTSE) began in 1994 at nine UK field sites as part of continuing research into the effects of sludge-borne heavy metals on soil fertility. The long-term effects of Zn, Cu, and Cd on the most probable numbers of cells (MPN)
Alex Charlton   +43 more
core   +2 more sources

Phylogenies of atpD and recA support the small subunit rRNA-based classification of rhizobia [PDF]

open access: yes, 2001
The current classification of the rhizobia (root-nodule symbionts) assigns them to six genera. It is strongly influenced by the small subunit (16S, SSU) rRNA molecular phylogeny, but such single-gene phylogenies may not reflect the evolution of the ...
Gaunt, M.W.   +4 more
core   +1 more source

Diversity of Sinorhizobium (Ensifer) meliloti Bacteriophages in the Rhizosphere of Medicago marina: Myoviruses, Filamentous and N4-Like Podovirus [PDF]

open access: yes, 2020
Using different Sinorhizobium meliloti strains as hosts, we isolated eight new virulent phages from the rhizosphere of the coastal legume Medicago marina.
Alías Villegas, Cynthia   +5 more
core   +1 more source

Evolutionary dynamics of insertion sequences in relation to the evolutionary histories of the chromosome and symbiotic plasmid genes of Rhizobium etli populations [PDF]

open access: yes, 2010
Insertion sequences (IS) are mobile genetic elements that are distributed in many prokaryotes. In particular, in the genomes of the symbiotic nitrogen-fixing bacteria collectively known as rhizobia, IS are fairly abundant in plasmids or chromosomal ...
Bustos, Patricia   +7 more
core   +2 more sources

The oxygen‐sensing FixLJ represses nitrogen fixation in Rhodopseudomonas palustris in response to oxygen

open access: yesmLife, EarlyView.
Abstract Biological nitrogen fixation in symbiotic diazotrophs is subject to oxygen regulation by an oxygen‐sensing FixLJ two‐component system under micro‐oxic conditions. However, it remains unclear whether this mechanism is conserved in free‐living diazotrophs.
Lingwei Cui   +6 more
wiley   +1 more source

Type VI secretion: a beginner's guide [PDF]

open access: yes, 2008
Type VI secretion is a newly described mechanism for protein transport across the cell envelope of Gram-negative bacteria. Components that have been partially characterised include an IcmF homologue, the ATPase ClpV, a regulatory FHA domain protein and ...
Akeda   +47 more
core   +1 more source

Toward understanding the catalytic mechanism for two classes of bacterial phospholipid N‐methyltransferases

open access: yesThe FEBS Journal, EarlyView.
Phospholipid N‐methyltransferases (Pmts) synthesize phosphatidylcholine in many bacteria. In this study, we compared the catalytic mechanisms of two bacterial Pmt classes: the Rhodobacter (R‐) and the Sinorhizobium (S‐) type. Representative enzymes for each class were derived from Rubellimicrobium thermophilum and Agrobacterium tumefaciens ...
Irina Shevyreva   +5 more
wiley   +1 more source

Generalized Transduction in Rhizobium leguminosarum [PDF]

open access: yesJournal of General Microbiology, 1979
Generalized transduction in Rhizobium leguminosarum by two virulent bacteriophages, RL38 and RL39, is described. The transduction frequency was increased by ultraviolet irradiation of phage lysates. Cotransduction of auxotrophic and antibiotic resistance markers was shown, as was transduction of two PI group R plasmids.
openaire   +1 more source

COCHLEATA controls spatial regulation of cytokinin and auxin during nodule development

open access: yesNew Phytologist, EarlyView.
Nodule development defects in the coch mutant include root‐like structures, reduced colonisation, and vascular disorganisation. Summary Root nodules host nitrogen‐fixing bacteria and likely evolved through modifications of the lateral root program. Members of the NOOT‐BOP‐COCH‐LIKE transcriptional coregulator family suppress root identity in nodules ...
Karen Velandia   +5 more
wiley   +1 more source

Communication and signal exchange in the Rhizobium bradyrhizobium legume system [PDF]

open access: yes, 1994
A new comprehensive communication concept in the Rhizobium/Bradyrhizobium legume symbiosis was developed. It includes a root zone specific flavonoid exudation, the differential activity of phenylpropane/acetate pathway derivatives on chemotaxis, nod-gene
Ahlborn, Bettina   +15 more
core  

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