Related Experiment Video
Updated: Jun 24, 2026

04:29
An Approach to Constructing Multispecies Biofilm Communities from Rhizosphere Soil
Published on: May 24, 2024
Lysobacter ximonensis sp. nov., isolated from soil
Summary
A novel aerobic, Gram-negative bacterium, Lysobacter ximonensis sp. nov. strain XM415(T), was discovered in Tibetan soil. This finding expands the known diversity within the Lysobacter genus.
Area of Science:
- Microbiology
- Bacteriology
- Taxonomy
Background:
- The genus Lysobacter comprises aerobic, Gram-negative bacteria known for diverse metabolic capabilities.
- Accurate bacterial classification is crucial for understanding microbial ecology and potential applications.
Purpose of the Study:
- To taxonomically characterize a novel bacterial isolate from Tibet, China.
- To determine if the isolate represents a new species within the Lysobacter genus.
Main Methods:
- Polyphasic taxonomic analysis including phenotypic characterization (Gram staining, motility, enzymatic tests) and genotypic analysis (16S rRNA gene sequencing, DNA G+C content).
- Analysis of predominant ubiquinone and fatty acid profiles.
Main Results:
- Strain XM415(T) exhibited aerobic, Gram-negative, gliding, rod-shaped morphology with oxidase-negative and catalase-positive reactions.
- Highest 16S rRNA gene sequence similarity was 96.0% with Lysobacter niastensis GH41-7(T).
- Predominant cellular components included ubiquinone Q-8 and specific branched fatty acids; DNA G+C content was 63.5 mol%.
Conclusions:
- Strain XM415(T) represents a novel species of the genus Lysobacter, named Lysobacter ximonensis sp. nov.
- The proposed type strain is XM415(T) (=CCTCC AB 207091(T) =NRRL B-51263(T)).
Related Concept Videos
Bacterial Phylum Actinobacteria
Coryneform bacteria are gram-positive, aerobic, nonmotile rods that exhibit irregular, club-shaped, or V-shaped arrangements. Their V-shape results from snapping division, where the inner cell wall layer forms the cross-wall, while the outer layer remains intact until it ruptures on one side, causing the daughter cells to bend away.The primary genera are Corynebacterium and Arthrobacter. Corynebacterium includes diverse species, ranging from saprophytes to pathogens like Corynebacterium...
Microbiota of the Large Intestine
The large intestine hosts the most densely populated microbial ecosystem in the human body. This complex community primarily consists of anaerobic bacteria, with Bacillota (formerly Firmicutes) and Bacteroidota (formerly Bacteroidetes) as the predominant groups. The distribution of these microbes varies along different sections of the large intestine, influenced by local environmental factors such as oxygen availability and nutrient composition.The cecum, located at the beginning of the large...
Anoxygenic Phototrophic Bacteria
Anoxygenic phototrophic bacteria are a diverse group of microorganisms that perform photosynthesis without producing oxygen. They primarily include purple sulfur bacteria, purple nonsulfur bacteria, green sulfur bacteria, and green nonsulfur bacteria. These bacteria are classified into the Gammaproteobacteria, Alphaproteobacteria, Betaproteobacteria, Chlorobi, and Chloroflexi lineages, each with distinct physiological and ecological adaptations.Purple sulfur bacteria belong to the...
Soil Microbial Ecology
Soil microbial ecology is defined by highly diverse, spatially structured communities that drive nutrient cycling, organic matter turnover, and overall ecosystem stability. Although a gram of soil can contain thousands of bacterial and archaeal taxa, the ecological processes they mediate are even more crucial for sustaining terrestrial life.Microhabitats and NichesSoil is a heterogeneous mixture of minerals, organic matter, water, and air. Microbes inhabit distinct microhabitats formed by...
Microbiota of the Stomach and Small Intestine
The human gastrointestinal (GI) tract is characterized by distinct physicochemical conditions that shape its microbial communities. Among these, the stomach presents a particularly challenging environment for microbial colonization due to its highly acidic pH, ranging from 1 to 3. This extreme acidity effectively limits microbial density. However, certain acid-tolerant microorganisms are capable of surviving in this niche. Notably, Helicobacter pylori can colonize the gastric mucosa,...
Microbial Nutrition
Organisms exhibit remarkable metabolic diversity, categorized based on how they acquire energy and carbon. These strategies enable survival in various ecological niches and are essential for maintaining energy flow and nutrient cycling within ecosystems.Energy and Carbon SourcesOrganisms are classified as phototrophs or chemotrophs based on energy acquisition. Phototrophs use light as their energy source, while chemotrophs rely on oxidizing chemical compounds. Further differentiation arises...
