Abstract
Salt stress, as one of the most severe environmental stresses, can cause a series of changes in plants. However, the explanation of plant salt stress alleviating mechanism of plant growth-promoting rhizobacteria (PGPR) was hindered by the limited availability of transcriptomic information for salt stress-treated plants grown in a microorganism-controlled environment. Our previous reports have selected Bacillus atrophaeus WU-9 as PGPR significantly alleviating pepper (Capsicum frutescens. L) salt stress. In this work, the RNA-seq analysis of salt stress-treated and untreated plants, grown with and without WU-9 in a microorganism-controlled environment, was used to reveal the plant salt stress alleviating mechanisms of WU-9. Twelve sequencing libraries, prepared by treating with WU-9 and salt (150 mM NaCl for 36 h), were constructed by RNA-Seq technique. Non-inoculated seedlings mainly respond to salt stress through regulation of signal transduction, such as ethylene-activated signaling pathway, signaling and cell communication, etc. And ethylene signal participated in salt stress response in pepper through regulating defense responses, fruit ripening and senescence. WU-9 inoculation under salt stress mainly improves salt tolerance and plant growth by regulating salt stress-responding ethylene and auxin signal transduction, utilization of proline, photosynthesis, antioxidant enzyme activities and cell enlargement. Furthermore, 86 differentially expressed genes and 20 transcription factors were identified as associated with salt stress response and tolerance. Thus, this innovative transcriptomic study identified the salt stress response and alleviation in C. frutescens. L with PGPR inoculation. This result provided novel insights into the salinity alleviation in pepper regulated by PGPR.
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Claims 7
Claim · model-written summary
Noninoculated seedlings respond to salt through signal transduction regulation.
- Taxon
- Capsicum frutescens. L
Capsicum frutescenst0 - Treatment
- salt stresse0
- Outcome
- regulation of signal transductione0
- Qualifier
- ethylene-activated signaling pathwaye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Non-inoculated seedlings mainly respond to salt stress through regulation of signal transduction, such as ethylene-activated signaling pathway, signaling and cell communication”
t0“Capsicum frutescens. L”
Claim · model-written summary
Ethylene signaling participates in pepper salt response through defense, ripening and senescence regulation.
Verbatim
e0“ethylene signal participated in salt stress response in pepper through regulating defense responses, fruit ripening and senescence”
Claim · model-written summary
WU-9 inoculation improves pepper salt tolerance.
- Taxon
- Capsicum frutescens. LCapsicum frutescenst0
- Treatment
- WU-9 inoculation under salt stresse0
- Interactor
- WU-9e0symbiont
- Outcome
- salt tolerancee0
- Direction
- improvese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“WU-9 inoculation under salt stress mainly improves salt tolerance and plant growth”
t0“Capsicum frutescens. L”
Claim · model-written summary
WU-9 inoculation improves pepper growth under salt stress.
- Taxon
- Capsicum frutescens. LCapsicum frutescenst0
- Treatment
- WU-9 inoculation under salt stresse0
- Interactor
- WU-9e0symbiont
- Outcome
- plant growthe0
- Direction
- improvese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“WU-9 inoculation under salt stress mainly improves salt tolerance and plant growth”
t0“Capsicum frutescens. L”
Claim · model-written summary
WU-9 regulates ethylene and auxin signaling, proline use, photosynthesis, antioxidant activity and cell enlargement under salt stress.
- Taxon
- Capsicum frutescens. LCapsicum frutescenst0
- Treatment
- regulatinge0
- Outcome
- ethylene and auxin signal transduction, utilization of proline, photosynthesise0
- Qualifier
- antioxidant enzyme activities and cell enlargemente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“by regulating salt stress-responding ethylene and auxin signal transduction, utilization of proline, photosynthesis, antioxidant enzyme activities and cell enlargement”
t0“Capsicum frutescens. L”
Claim · model-written summary
The study identified 86 differentially expressed genes associated with salt response and tolerance.
- Taxon
- Capsicum frutescens. LCapsicum frutescenst0
- Outcome
- differentially expressed genese0
- Value
- 86 differentially expressed genese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“86 differentially expressed genes and 20 transcription factors were identified as associated with salt stress response and tolerance”
t0“Capsicum frutescens. L”
Claim · model-written summary
The study identified 20 transcription factors associated with salt response and tolerance.
- Taxon
- Capsicum frutescens. LCapsicum frutescenst0
- Outcome
- transcription factorse0
- Value
- 20 transcription factorse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“86 differentially expressed genes and 20 transcription factors were identified as associated with salt stress response and tolerance”
t0“Capsicum frutescens. L”
The same questions in other papers
inoculation · growth · Capsicum frutescens (hot pepper)Results differ
7 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
5 papers more in this group
See all 9 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.