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A convergent total synthesis of the siderophore coelichelin is described. The synthetic route also provided access to acetyl coelichelin and other congeners of the parent siderophore. The synthetic products were evaluated for their ability to bind ferric iron and promote growth of a siderophore-deficient strain of the Gram-negative bacterium Pseudomonas aeruginosa under iron restriction conditions. The results of these studies indicate coelichelin and several derivatives serve as ferric iron delivery vehicles for P. aeruginosa.
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http://dx.doi.org/10.1021/acs.orglett.8b03857 | DOI Listing |
Ecotoxicol Environ Saf
September 2025
Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental & Resource Science, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Subtropic Soil and Plant Nutrition, Zhejiang University, Hangzhou 310058, China. Ele
Seven plant growth-promoting bacteria (PGPB) were isolated from extracts of surface-sterilized Sedum alfredii Hance. Among the seven isolates, the strain SaRB5 identified as Stenotrophomonas maltophilia through 16S rDNA sequence analysis, exhibited highest levels of heavy metal resistance and plant growth-promoting traits. SaRB5 tolerated high concentrations of cadmium (Cd) (1.
View Article and Find Full Text PDFJ Basic Microbiol
September 2025
Department of Plant Pathology, CCS Haryana Agricultural University, Hisar, Haryana, India.
Cereal cyst nematode (Heterodera avenae) significantly hampers barley production by causing stunted growth and yield losses. This study explored the biocontrol potential of multitrait root endophytic bacteria isolated from H. avenae-infested barley roots to suppress nematode infestation.
View Article and Find Full Text PDFTrends Pharmacol Sci
September 2025
Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria.
The escalating threat of antimicrobial resistance demands innovative therapeutic strategies beyond classical targets. Recent insights into the mechanisms of bacterial iron acquisition - ranging from siderophores and heme uptake to ferrous iron transport - have enabled new approaches to impair pathogen growth and virulence. These pathways are increasingly being harnessed for therapeutic gain.
View Article and Find Full Text PDFFront Plant Sci
August 2025
School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, China.
Introduction: Wheat is one of the three major cereal crops in the world and is susceptible to the effects of drought stress. Rhizosphere microorganisms can affect plant growth by altering nutrient absorption and resistance to stress. Studying the plant-microbe interaction under drought stress to reveal the impact of soil microorganisms on plant growth in dry land has important scientific significance.
View Article and Find Full Text PDFProc Natl Acad Sci U S A
September 2025
Department of Chemistry, University of Utah, Salt Lake City, UT 84112.
Methane is a potent greenhouse gas and a target for near-term climate change mitigation. In many natural ecosystems, methane is sequestered by microbial communities, yet little is known about how constituents of methane-oxidizing communities interact with each other and their environment. This lack of mechanistic understanding is a common issue for many important microbial communities, but it is difficult to draw links between available sequencing information and the metabolites that govern community interactions.
View Article and Find Full Text PDF