How Two Bacteria Help Duckweed Survive Salt Stress
Author Information
Author(s): Popržen Tatjana, Antonić Reljin Dragana, Uzelac Branka, Milovančević Marija, Paunović Danijela, Trifunović-Momčilov Milana, Marković Marija, Raspor Martin, Nikolić Ivan, Stanković Slaviša, Radulović Olga
Primary Institution: Institute for Biological Research “Siniša Stanković” – National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
Hypothesis
The bacterial strains Pseudomonas oryzihabitans D1-104/3 and P. gessardii C31-106/3 alleviate salt-induced oxidative stress in duckweed.
Conclusion
The study found that P. gessardii C31-106/3 improved salt stress tolerance in duckweed, while P. oryzihabitans D1-104/3 supported its growth.
Supporting Evidence
- Both bacterial strains decreased lipid peroxidation in duckweed.
- P. gessardii C31-106/3 increased dry-to-fresh-weight ratio in duckweed at high salt concentration.
- P. oryzihabitans D1-104/3 increased ascorbic acid content in duckweed under salt stress.
- Fluorescence microscopy showed that both bacteria colonized duckweed surfaces.
- At 100 mM NaCl, both strains significantly increased total polyphenol content and antioxidant capacity.
Takeaway
Duckweed can grow better in salty water when helped by certain bacteria, which protect it from stress.
Methodology
Duckweed was treated with two bacterial strains and exposed to different salt concentrations, measuring growth and antioxidative responses over 14 days.
Limitations
The study focused only on two bacterial strains and one plant species, limiting the generalizability of the findings.
Statistical Information
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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