Mitigation of Salt Stress in Rice by the Halotolerant Plant Growth-Promoting Bacterium Enterobacter asburiae D2
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View abstract on PubMed
Summary
This summary is machine-generated.This study isolated Enterobacter asburiae D2, a plant growth-promoting rhizobacteria (PGPR), which effectively alleviates salt stress in rice. Inoculation significantly enhanced rice growth and physiological parameters under saline conditions.
Area Of Science
- Agricultural Science
- Microbiology
- Plant Science
Background
- Salinity poses a significant threat to global crop production.
- Halotolerant plant growth-promoting rhizobacteria (PGPR) offer a sustainable solution to mitigate salt stress in crops.
Purpose Of The Study
- To isolate and characterize halotolerant PGPR for enhancing rice resilience to salinity.
- To investigate the plant growth-promoting (PGP) mechanisms of the isolated strain.
Main Methods
- Isolation and identification of PGPR from rice.
- Assessment of PGP traits including indole-3-acetic acid production, siderophore synthesis, phosphate solubilization, and 1-aminocyclopropane-1-carboxylic deaminase activity.
- Genome analysis to understand PGP mechanisms.
- Evaluation of rice growth and physiological responses under normal and saline conditions post-inoculation.
Main Results
- Enterobacter asburiae D2 was identified as a potent PGPR with multiple PGP traits.
- Inoculation with D2 significantly improved rice plant height, root length, and dry biomass under both normal and saline conditions.
- D2 inoculation enhanced chlorophyll and proline content, reduced oxidative damage, and increased the K+/Na+ ratio in rice seedlings exposed to salt stress.
Conclusions
- Enterobacter asburiae D2 is a promising PGPR for alleviating salt stress in rice.
- The study highlights the potential of D2 as a biofertilizer to improve crop yield in saline environments.
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