Abstract
Abiotic stress in plants pose a major threat to cereal crop production worldwide and cold stress is also notorious for causing a decrease in plant growth and yield in wheat. The present study was designed to alleviate cold stress on plants by inoculating psychrophilic PGPR bacteria belonging to Bacillus genera isolated from extreme rhizospheric environments of Qinghai-Tibetan plateau. The genetic screening of psychrophilic Bacillus spp. CJCL2, RJGP41 and temperate B. velezensis FZB42 revealed presence of genetic features corresponding to cold stress response, membrane transport, signal transduction and osmotic regulation. Subsequently, the time frame study for the expression of genes involved in these pathways was also significantly higher in psychrophilic strains as analyzed through qPCR analysis at 4 ℃. The inoculated cold tolerant Bacillus strains also aided in inducing stress response in wheat by regulating abscisic acid, lipid peroxidation and proline accumulation pathways in a beneficial manner. Moreover, during comparative analysis of growth promotion in wheat all three Bacillus strains showed significant results at 25 ℃. Whereas, psychrophilic Bacillus strains CJCL2 and RJGP41 were able to positively regulate the expression of phytohormones leading to significant improvement in plant growth under cold stress.
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Claims 5
Claim · model-written summary
Genetic screening found cold stress response, membrane transport, signal transduction and osmotic regulation features in psychrophilic Bacillus strains CJCL2 and RJGP41 and in B. velezensis FZB42.
- Taxon
- Wheat
Triticum aestivumt0 - Interactor
- psychrophilic Bacillus spp. CJCL2e1symbiont
- Outcome
- genetic features corresponding to cold stress responsee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phytohormones in Wheat”
e1“The genetic screening of psychrophilic Bacillus spp. CJCL2, RJGP41 and temperate B. velezensis FZB42 revealed presence of genetic features corresponding to cold stress response, membrane transport, signal transduction and osmotic regulation”
Claim · model-written summary
Expression of genes involved in cold-stress pathways was significantly higher in psychrophilic strains at 4 ℃.
- Taxon
- WheatTriticum aestivumt0
- Material
- psychrophilic strainse2
- Outcome
- expression of genes involved in these pathwayse2
- Qualifier
- 4 ℃e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phytohormones in Wheat”
e2“the time frame study for the expression of genes involved in these pathways was also significantly higher in psychrophilic strains as analyzed through qPCR analysis at 4 ℃”
Claim · model-written summary
Inoculated cold-tolerant Bacillus strains aided the wheat stress response by regulating abscisic acid, lipid peroxidation and proline accumulation pathways, in a beneficial manner.
- Taxon
- wheatTriticum aestivume3
- Treatment
- inoculated cold tolerant Bacillus strainse3
- Interactor
- cold tolerant Bacillus strainse3symbiont
- Outcome
- abscisic acid, lipid peroxidation and proline accumulation pathwayse3
- Direction
- in a beneficial mannere3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The inoculated cold tolerant Bacillus strains also aided in inducing stress response in wheat by regulating abscisic acid, lipid peroxidation and proline accumulation pathways in a beneficial manner”
Claim · model-written summary
All three Bacillus strains showed significant growth promotion in wheat at 25 ℃.
- Taxon
- wheatTriticum aestivume4
- Treatment
- all three Bacillus strainse4
- Interactor
- all three Bacillus strainse4symbiont
- Outcome
- growth promotione4
- Qualifier
- 25 ℃e4
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“during comparative analysis of growth promotion in wheat all three Bacillus strains showed significant results at 25 ℃”
Claim · model-written summary
Psychrophilic Bacillus strains CJCL2 and RJGP41 led to significant improvement in wheat growth under cold stress, through positive regulation of phytohormone expression.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- psychrophilic Bacillus strains CJCL2 and RJGP41e5
- Interactor
- psychrophilic Bacillus strains CJCL2 and RJGP41e5symbiont
- Compound
- phytohormonese5
- Outcome
- plant growthe5
- Direction
- improvemente5
- Qualifier
- under cold stresse5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phytohormones in Wheat”
e5“psychrophilic Bacillus strains CJCL2 and RJGP41 were able to positively regulate the expression of phytohormones leading to significant improvement in plant growth under cold stress”
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