Bradyrhizobium strains, isolated in New Caledonia from nodules of the endemic legume Serianthes calycina growing in nickel-rich soils, were able to grow in the presence of 15 mM NiCl2. The genomes of these strains harbored two Ni resistance determinants, the cnr and nre operons. By constructing a cnrA mutant, we demonstrated that the cnr operon determines the high nickel resistance in Bradyrhizobium strains.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2168143 | PMC |
| http://dx.doi.org/10.1128/AEM.01431-07 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Differential responses of Bradyrhizobium sp. SUTN9-2 to plant extracts and implications for endophytic interactions within different host plants.
Sci Rep
January 2025
School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand.
Bradyrhizobium sp. strain SUTN9-2 demonstrates cell enlargement, increased DNA content, and efficient nitrogen fixation in response to rice (Oryza sativa) extract. This response is attributed to the interaction between the plant's cationic antimicrobial peptides (CAMPs) and the Bradyrhizobium BacA-like transporter (BclA), similar to bacteroid in legume nodules.
View Article and Find Full Text PDFMetagenomic and enzymatic mechanisms underpinning efficient water treatment of 2-ethylhexyl diphenyl phosphate (EHDPP) by the microbial consortium 8-ZY.
Water Res
January 2025
College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China. Electronic address:
The ubiquitous presence, potential toxicity, and persistence of 2-ethylhexyl diphenyl phosphate (EHDPP) in the environment have raised significant concerns. In this study, we successfully isolate a novel microbial consortium, named 8-ZY, and we demonstrate its remarkable ability to degrade EHDPP using an extremely low concentration of the inoculate. A total of 11 degradation metabolites were identified, including hydrolysis, hydroxylated, methylated, glucuronide-conjugated, and previously unreported byproducts, enabling us to propose new transformation pathways.
View Article and Find Full Text PDFStress-relieving plant growth-promoting bacterial co-inoculation enhances nodulation and nitrogen uptake in black gram under nitrogen-free saline conditions.
Front Microbiol
January 2025
National Bureau of Agriculturally Important Microorganism, Mau, India.
Non-halophytic plants are highly susceptible to salt stress, but numerous studies have shown that halo-tolerant microorganisms can alleviate this stress by producing phytohormones and enhancing nutrient availability. This study aimed to identify and evaluate native microbial communities from salt-affected regions to boost black gram () resilience against salinity, while improving plant growth, nitrogen uptake, and nodulation in saline environments. Six soil samples were collected from a salt-affected region in eastern Uttar Pradesh, revealing high electrical conductivity (EC) and pH, along with low nutrient availability.
View Article and Find Full Text PDFClosed genomes of commercial inoculant rhizobia provide a blueprint for management of legume inoculation.
Appl Environ Microbiol
January 2025
Legume Rhizobium Sciences, Food Futures Institute, Murdoch University, Murdoch, Western Australia, Australia.
Unlabelled: Rhizobia are soil bacteria capable of establishing symbiosis within legume root nodules, where they reduce atmospheric N into ammonia and supply it to the plant for growth. Australian soils often lack rhizobia compatible with introduced agricultural legumes, so inoculation with exotic strains has become a common practice for over 50 years. While extensive research has assessed the N-fixing capabilities of these inoculants, their genomics, taxonomy, and core and accessory gene phylogeny are poorly characterized.
View Article and Find Full Text PDFDual Screen for Metal-Tolerant Metallophore Producers Evaluated with Soil from the Carpenter Snow Creek Site, a Heavy-Metal-Toxified Site in Montana.
ACS Omega
December 2024
Boudreau Lab, Department of Biomolecular Science, School of Pharmacy, University of Mississippi, Faser Hall University, University, Mississippi 38677-1848, United States.
Bacteria have evolved numerous mechanisms to resist metal toxicity, including small-molecule metal chelators (metallophores). This study presents a dual screening methodology to isolate metallophore-producing bacteria from the Carpenter Snow Creek Mining District for potential use in heavy-metal bioremediation. Soil samples were screened on metal-supplemented plates from which colonies were picked onto chrome azurol S (CAS)-dyed plates.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!