Novel Bacillus and Prestia isolates from Dwarf century plant enhance crop yield and salinity tolerance
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View abstract on PubMed
Summary
This summary is machine-generated.Novel endophytic bacteria from Agave desmettiana enhance wheat growth and yield under saline conditions. These salt-tolerant microbes offer a sustainable solution for improving crop resilience and global food security.
Area Of Science
- Microbiology
- Plant Science
- Agronomy
Background
- Soil salinity poses a significant threat to global food production, particularly affecting staple crops like wheat.
- Beneficial microbes associated with stress-resistant plants present a sustainable strategy for enhancing crop resilience.
- Agave desmettiana Jacobi harbors endophytic bacteria with potential for agricultural applications.
Purpose Of The Study
- To isolate and characterize novel endophytic bacteria from Agave desmettiana with plant growth-promoting (PGP) and salt-tolerance traits.
- To evaluate the efficacy of these endophytes in enhancing wheat germination, growth, and yield under saline stress.
- To explore the potential of under-utilized plant microbiomes for developing sustainable agricultural solutions.
Main Methods
- Isolation and identification of endophytic bacteria from Agave desmettiana.
- Assessment of plant growth-promoting traits: indole-3-acetic acid production, ammonia synthesis, zinc solubilization, ACC deaminase activity, biofilm formation, phosphate solubilization, nitrogen fixation, and hydrogen cyanide production.
- Evaluation of bacterial salt tolerance and their impact on wheat seed germination, seedling growth, and yield in field trials under saline conditions.
Main Results
- Two novel endophytic bacterial strains, Bacillus cereus (ADJ1) and Priestia aryabhattai (ADJ6), were isolated and characterized.
- Both strains exhibited significant PGP traits, including high indole-3-acetic acid and ammonia production, zinc solubilization, ACC deaminase production, and biofilm formation.
- Wheat seeds primed with ADJ1 and ADJ6 showed enhanced germination, improved growth, and significantly increased yields in field trials, demonstrating high salt tolerance (up to 1.03 M).
Conclusions
- Endophytic bacteria Bacillus cereus (ADJ1) and Priestia aryabhattai (ADJ6) from Agave desmettiana possess potent plant growth-promoting and salt-tolerance capabilities.
- These endophytes effectively improve wheat germination, growth, and yield under saline stress, offering a sustainable approach to enhance crop resilience.
- Exploiting endophytic bacteria from stress-resistant plants like Agave desmettiana is a promising strategy to mitigate the impact of soil salinization on global food security.
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