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Exploring the Root Microbiome: Extracting Bacterial Community Data from the Soil, Rhizosphere, and Root Endosphere
Published on: May 2, 2018
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Understanding the bacterial community structure associated with the Eichhornia crassipes rootzone
Chandra Kant Singh1, Kushneet Kaur Sodhi2, Dileep Kumar Singh1
1Department of Zoology, University of Delhi, Delhi, 110007, India.
Molecular Biology Reports
|December 29, 2023
Summary
The Eichhornia crassipes microbiome, particularly its root exudates, enhances bacterial diversity and aids plant survival in polluted environments. This study reveals abundant Proteobacteria and antibiotic resistance genes within the plant
Area of Science:
- Microbial Ecology
- Environmental Science
- Plant Biology
Background:
- The plant microbiome is crucial for ecosystem functions, including stress protection and nutrient uptake.
- The rhizosphere facilitates plant-microbe interactions, impacting heavy metal and antibiotic removal from contaminated sites.
- Eichhornia crassipes harbors a rich rhizosphere microbiome, offering a pathway for human exposure to antibiotic-resistant bacteria and genes.
Purpose of the Study:
- To analyze bacterial diversity and functional profiles in the Eichhornia crassipes rhizosphere.
- To understand the role of root exudates in supporting microbial communities in polluted environments.
Main Methods:
- 16S rRNA gene sequencing (V3-V4 hypervariable region) was employed.
- QIIME software was used for analyzing Next Generation Sequencing (NGS) data.
- Alpha diversity metrics (Chao1, Shannon, Simpson) were calculated.
Main Results:
- Significantly higher bacterial diversity was observed in the E. crassipes root samples.
- Proteobacteria (79%) was the dominant phylum, followed by Firmicutes (8%) and Cyanobacteria (8%).
- Sulfuricurvum kujiense was identified as the most abundant species, with Sulfuricurvum being the most abundant genus.
- Bacterial communities harbored genes conferring resistance to beta-lactams, tetracycline, fluoroquinolones, and penams.
Conclusions:
- The E. crassipes microbiome, supported by root exudates, facilitates plant survival in polluted environments.
- Metagenomic analysis highlights the adaptive strategies of plant-associated microbes in contaminated ecosystems.
