Phosphate-mobilizing bacterial community structure and mobilization mechanisms in tobacco rhizosphere
These videos have been matched automatically. Contact us if they are not relevant.
These videos have been matched automatically. Contact us if they are not relevant.
View abstract on PubMed
Summary
This summary is machine-generated.Rhizosphere bacteria enhance plant growth by mobilizing soil phosphorus. This study identified diverse P-mobilizing bacteria, revealing their mechanisms and significant promotion effects on tobacco growth.
Area Of Science
- Microbiology
- Plant Science
- Soil Science
Background
- Phosphorus is vital for plant growth but often unavailable in soil.
- Rhizosphere bacteria mobilize phosphorus via mineralization and solubilization.
- The diversity of these bacteria is not well understood.
Purpose Of The Study
- To isolate and characterize phosphorus-mobilizing bacteria from tobacco rhizosphere.
- To analyze their P mobilization mechanisms and growth promotion effects.
- To understand the diversity and community structure of these bacteria.
Main Methods
- Culturomics for bacterial isolation.
- Systematic evaluation of phosphorus mobilization activities.
- Whole genome sequencing for mechanism analysis.
- Greenhouse experiments for growth promotion assessment.
Main Results
- 266 phosphorus-mobilizing bacteria were identified, belonging to 49 genera across four phyla.
- Pseudomonadota and Bacillota were dominant phyla, with Pseudomonas and Bacillus as key genera.
- Phosphorus-mineralizing bacteria (PMB) showed higher diversity and abundance than phosphorus-solubilizing bacteria (PSB).
- PSB significantly enhanced tobacco growth and phosphorus uptake in greenhouse trials.
Conclusions
- Rhizosphere bacteria play a crucial role in phosphorus cycling.
- Genomic analysis revealed genetic flexibility in P mobilization, especially in Pseudomonadota.
- This study provides insights into microbial strategies for enhancing plant phosphorus availability and growth.
These videos have been matched automatically. Contact us if they are not relevant.
These videos have been matched automatically. Contact us if they are not relevant.
Related Concept Videos
The phylum Tenericutes, which includes the single class Mollicutes, comprises bacteria that lack cell walls. The term "Mollicutes" derives from the Latin word mollis, meaning "soft." These organisms are among the smallest known and are commonly referred to as mycoplasmas due to the prominence of the genus Mycoplasma, which includes well-known human pathogens. Despite their inability to stain gram-positively (a result of their lack of cell walls), mycoplasmas are phylogenetically related to the...
Plants have the impressive ability to create their own food through photosynthesis. However, plants often require assistance from organisms in the soil to acquire the nutrients they need to function correctly. Both bacteria and fungi have evolved symbiotic relationships with plants that help the species to thrive in a wide variety of environments.
The collective bacteria residing in and around plant roots are termed the rhizosphere. These soil-dwelling bacterial species are incredibly diverse....
Planctomycetes are a group of morphologically distinct bacteria predominantly classified into two orders: Planctomycetales and Brocadiales. These gram-negative bacteria exhibit unique features, including division by budding and the presence of stalks or appendages. Their cells are often found in rosette arrangements, and they are notable for possessing an S-layer in their cell envelope, which is relatively uncommon among bacteria. Additionally, Planctomycetes frequently exhibit intracellular...
Proteobacteria, one of the largest and most diverse bacterial phyla, encompasses a wide range of Gram-negative bacteria distinguished by their outer membrane composed of lipopolysaccharides. These microorganisms exhibit various metabolic capabilities, including phototrophy, chemolithotrophy, and heterotrophy, and thrive in diverse environments from soil to aquatic systems and host-associated niches. The phylum is divided into six classes: Alphaproteobacteria, Betaproteobacteria,...
Plants often form mutualistic relationships with soil-dwelling fungi or bacteria to enhance their roots’ nutrient uptake ability. Root-colonizing fungi (e.g., mycorrhizae) increase a plant’s root surface area, which promotes nutrient absorption. While root-colonizing, nitrogen-fixing bacteria (e.g., rhizobia) convert atmospheric nitrogen (N2) into ammonia (NH3), making nitrogen available to plants for various biological functions. For example, nitrogen is essential for the...
The phylum Bacteroidota includes over 700 species classified into four primary orders: Bacteroidales, Cytophagales, Flavobacteriales, and Sphingobacteriales. These gram-negative, non-sporulating rods exhibit saccharolytic capabilities and can be aerobic or fermentative, encompassing obligate aerobes, facultative aerobes, and obligate anaerobes. Many species display gliding motility, though some are nonmotile or use flagella. The genus Bacteroides is well-studied due to its significant role in...