Abstract
Abstract Increasing soil salinization seriously impairs plant growth and development, resulting in crop loss. The Salt-Overly-Sensitive (SOS) pathway is indispensable to the mitigation of Na + toxicity in plants under high salinity. However, whether natural variations of SOS2 contribute to salt tolerance has not been reported. Here a natural variation in the SlSOS2 promoter region was identified to be associated with root Na+/K+ ratio and the loss of salt resistance during tomato domestication. This natural variation contains an ABI4-binding cis-element and plays an important role in the repression of SlSOS2 expression. Genetic evidence revealed that SlSOS2 mutations increase root Na+/K+ ratio under salt stress conditions and thus attenuate salt resistance in tomato. Together, our findings uncovered a critical but previously unknown natural variation of SOS2 in salt resistance, which provides valuable natural resources for genetic breeding for salt resistance in cultivated tomatoes and other crops.
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Claims 5
Claim · model-written summary
A natural variation in the SlSOS2 promoter region was associated with root Na+/K+ ratio in tomato.
- Taxon
- tomato
Solanum lycopersicumt0 - Gene
- SlSOS2 promoter regione1
- Outcome
- root Na+/K+ ratioe1
- Direction
- associatede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Here a natural variation in the SlSOS2 promoter region was identified to be associated with root Na+/K+ ratio and the loss of salt resistance during tomato domestication”
t0“hinders salt resistance during tomato domestication”
Claim · model-written summary
The loss of salt resistance was associated with tomato domestication.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- tomato domesticatione1
- Outcome
- salt resistancee1
- Direction
- losse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Here a natural variation in the SlSOS2 promoter region was identified to be associated with root Na+/K+ ratio and the loss of salt resistance during tomato domestication”
t0“hinders salt resistance during tomato domestication”
Claim · model-written summary
The SlSOS2 promoter natural variation, through an ABI4-binding cis-element, plays a role in repressing SlSOS2 expression in tomato.
- Taxon
- tomatoSolanum lycopersicumt0
- Gene
- SlSOS2e2
- Outcome
- repression of SlSOS2 expressione2
- Qualifier
- ABI4-binding cis-elemente2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“This natural variation contains an ABI4-binding cis-element and plays an important role in the repression of SlSOS2 expression”
t0“hinders salt resistance during tomato domestication”
Claim · model-written summary
SlSOS2 mutations increased the root Na+/K+ ratio under salt stress conditions in tomato.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- SlSOS2 mutationse3
- Treatment
- salt stress conditionse3
- Outcome
- root Na+/K+ ratioe3
- Direction
- increasee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Genetic evidence revealed that SlSOS2 mutations increase root Na+/K+ ratio under salt stress conditions and thus attenuate salt resistance in tomato”
t0“hinders salt resistance during tomato domestication”
Claim · model-written summary
SlSOS2 mutations attenuated salt resistance in tomato.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- SlSOS2 mutationse3
- Treatment
- salt stress conditionse3
- Outcome
- salt resistancee3
- Direction
- attenuatee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Genetic evidence revealed that SlSOS2 mutations increase root Na+/K+ ratio under salt stress conditions and thus attenuate salt resistance in tomato”
t0“hinders salt resistance during tomato domestication”
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