Endophytic Bacteria from the Desiccation-Tolerant Plant Selaginella lepidophylla and Their Potential as Plant Growth-Promoting Microorganisms
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View abstract on PubMed
Summary
This summary is machine-generated.Endophytic bacteria from the resurrection plant <i>Selaginella lepidophylla</i> were isolated and tested. These plant growth promoters significantly enhanced growth in <i>Arabidopsis thaliana</i>, showing potential for agriculture.
Area Of Science
- Plant microbiology
- Plant biotechnology
- Agricultural science
Background
- Plant-associated bacteria, including endophytic, epiphytic, and rhizospheric microbes, are vital for plant health and productivity.
- These bacteria utilize complex mechanisms, known as plant growth promotion, to enhance plant development.
Purpose Of The Study
- To isolate, characterize, and identify endophytic bacteria from <i>Selaginella lepidophylla</i>.
- To evaluate the plant growth-promoting potential of these isolates using <i>Arabidopsis thaliana</i> as a model system.
Main Methods
- Isolation and identification of 163 endophytic bacteria from <i>S. lepidophylla</i>.
- Assessment of plant growth-promoting traits: indole-3-acetic acid production, phosphate solubilization, biological nitrogen fixation, trehalose quantification, and siderophore production.
- Evaluation of plant growth promotion in <i>A. thaliana</i> via Murashige Skoog medium, agar-water, and direct seed inoculation.
Main Results
- Identified bacterial genera include <i>Agrobacterium</i>, <i>Burkholderia</i>, <i>Curtobacterium</i>, <i>Enterobacter</i>, <i>Erwinia</i>, <i>Pantoea</i>, <i>Pseudomonas</i>, and <i>Rhizobium</i>.
- Bacterial isolates enhanced primary root elongation, lateral root and root hair development, and increased fresh and dry biomass in <i>A. thaliana</i>.
- Three isolates notably promoted early flowering in the model plant.
Conclusions
- Endophytic bacteria from <i>S. lepidophylla</i> possess significant plant growth-promoting capabilities.
- These isolates demonstrate potential for application in enhancing the growth of agriculturally important crops.
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