Abstract
Soil salinity is one of the major threats to agricultural productivity worldwide. Salt stress exposure alters root and shoots growth rates, thereby affecting overall plant performance. While past studies have extensively documented the effect of salt stress on root elongation and shoot development separately, here we take an innovative approach by examining the coordination of root and shoot growth under salt stress conditions. Utilizing a newly developed tool for quantifying the root:shoot ratio in agar-grown Arabidopsis seedlings, we found that salt stress results in a loss of coordination between root and shoot growth rates. We identify a specific gene cluster encoding domain-of-unknown-function 247 (DUF247), and characterize one of these genes as S alt R oot:shoot R atio R egulator G ene (SR3G). Further analysis elucidates the role of SR3G as a negative regulator of salt stress tolerance, revealing its function in regulating shoot growth, root suberization, and sodium accumulation. We further characterize that SR3G expression is modulated by WRKY75 transcription factor, known as a positive regulator of salt stress tolerance. Finally, we show that the salt stress sensitivity of wrky75 mutant is completely diminished when it is combined with sr3g mutation. Together, our results demonstrate that utilizing root:shoot ratio as an architectural feature leads to the discovery of a new stress resilience gene. The study’s innovative approach and findings not only contribute to our understanding of plant stress tolerance mechanisms but also open new avenues for genetic and agronomic strategies to enhance crop environmental resilience.
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Claims 7
Claim · model-written summary
Salt stress disrupted coordination of root and shoot growth rates.
- Taxon
- Arabidopsis
Arabidopsist0 - Treatment
- salt stresse0
- Outcome
- coordination between root and shoot growth ratese0
- Direction
- losse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“salt stress results in a loss of coordination between root and shoot growth rates”
t0“Arabidopsis”
Claim · model-written summary
A DUF247 gene cluster was identified.
- Taxon
- ArabidopsisArabidopsist0
- Outcome
- specific gene cluster encoding domain-of-unknown-function 247 (DUF247)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We identify a specific gene cluster encoding domain-of-unknown-function 247 (DUF247)”
t0“Arabidopsis”
Claim · model-written summary
SR3G negatively regulates salt stress tolerance.
- Taxon
- ArabidopsisArabidopsist0
- Gene
- SR3Ge0
- Outcome
- salt stress tolerancee0
- Direction
- negative regulatore0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SR3G as a negative regulator of salt stress tolerance”
t0“Arabidopsis”
Claim · model-written summary
SR3G regulates shoot growth, root suberization and sodium accumulation.
- Taxon
- ArabidopsisArabidopsist0
- Gene
- SR3Ge1
- Outcome
- shoot growth, root suberization, and sodium accumulatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“its function in regulating shoot growth, root suberization, and sodium accumulation”
t0“Arabidopsis”
e1“SR3G as a negative regulator of salt stress tolerance”
Claim · model-written summary
WRKY75 modulates SR3G expression.
- Taxon
- ArabidopsisArabidopsist0
- Gene
- WRKY75 transcription factore0
- Outcome
- SR3G expressione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SR3G expression is modulated by WRKY75 transcription factor”
t0“Arabidopsis”
Claim · model-written summary
Combining wrky75 with sr3g eliminated the salt sensitive phenotype.
- Taxon
- ArabidopsisArabidopsist0
- Treatment
- combined with sr3g mutatione0
- Outcome
- salt stress sensitivitye0
- Direction
- completely diminishede0
- Comparator
- wrky75 mutante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the salt stress sensitivity of wrky75 mutant is completely diminished when it is combined with sr3g mutation”
t0“Arabidopsis”
Claim · model-written summary
Root to shoot ratio enabled discovery of a stress resilience gene.
- Taxon
- ArabidopsisArabidopsist0
- Outcome
- discovery of a new stress resilience genee0
- Value
- a new stress resilience genee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“utilizing root:shoot ratio as an architectural feature leads to the discovery of a new stress resilience gene”
t0“Arabidopsis”
The same questions in other papers
salinity · growth · ArabidopsisResults differ
21 papers in the same direction as this paper · 3 in the opposite direction
- negative
- negative
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