Abstract
Soil salinity is a common environmental stress factor that limits agricultural production worldwide. Plants have evolved different strategies to achieve salt tolerance. miR393 has been identified as closely related to biotic and abiotic stresses, and targets F-box genes that encode auxin receptors. The miR393-TIR1/AFB2/AFB3 regulatory module was discovered to have multiple functions that manipulate the auxin response. This study focused on miR393 and one of its targets, TIR1, and found that they played potential roles in response to salt stress. Our results showed that overexpression of a miR393-resistant TIR1 gene (mTIR1) in Arabidopsis clearly enhanced salt stress tolerance, which led to a higher germination rate, less water loss, reduced inhibition of root elongation, delayed senescence, decreased death rate and stabilized Chl content. These plants accumulated more proline and anthocyanin, and displayed enhanced osmotic stress tolerance. The expression of some salt stress-related genes was altered, and sodium content can be reduced in these plants under salt stress. We proposed that highly increased auxin signaling by overexpression of mTIR1 may trigger auxin-mediated downstream pathways to enhance plant salt stress resistance by osmoregulation and increased Na(+) exclusion.
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Claims 12
Claim · model-written summary
Overexpression of mTIR1 in Arabidopsis led to a higher germination rate under salt stress.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianat0 - Treatment
- overexpression of a miR393-resistant TIR1 gene (mTIR1)e0
- Gene
- mTIR1e0
- Outcome
- germination ratee1
- Direction
- highere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“overexpression of a miR393-resistant TIR1 gene (mTIR1) in Arabidopsis clearly enhanced salt stress tolerance”
e1“which led to a higher germination rate”
Claim · model-written summary
Overexpression of mTIR1 led to less water loss under salt stress.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- overexpression of a miR393-resistant TIR1 gene (mTIR1)e0
- Gene
- mTIR1e0
- Outcome
- water losse2
- Direction
- lesse2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“overexpression of a miR393-resistant TIR1 gene (mTIR1) in Arabidopsis clearly enhanced salt stress tolerance”
e2“less water loss”
Claim · model-written summary
Overexpression of mTIR1 reduced the inhibition of root elongation under salt stress.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- overexpression of a miR393-resistant TIR1 gene (mTIR1)e0
- Gene
- mTIR1e0
- Outcome
- inhibition of root elongatione3
- Direction
- reducede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“overexpression of a miR393-resistant TIR1 gene (mTIR1) in Arabidopsis clearly enhanced salt stress tolerance”
e3“reduced inhibition of root elongation”
Claim · model-written summary
Overexpression of mTIR1 delayed senescence under salt stress.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- overexpression of a miR393-resistant TIR1 gene (mTIR1)e0
- Gene
- mTIR1e0
- Outcome
- senescencee4
- Direction
- delayede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“overexpression of a miR393-resistant TIR1 gene (mTIR1) in Arabidopsis clearly enhanced salt stress tolerance”
e4“delayed senescence”
Claim · model-written summary
Overexpression of mTIR1 decreased the death rate under salt stress.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- overexpression of a miR393-resistant TIR1 gene (mTIR1)e0
- Gene
- mTIR1e0
- Outcome
- death ratee5
- Direction
- decreasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“overexpression of a miR393-resistant TIR1 gene (mTIR1) in Arabidopsis clearly enhanced salt stress tolerance”
e5“decreased death rate”
Claim · model-written summary
Overexpression of mTIR1 stabilized chlorophyll content under salt stress.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- overexpression of a miR393-resistant TIR1 gene (mTIR1)e0
- Gene
- mTIR1e0
- Outcome
- Chl contente6
- Direction
- stabilizede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“overexpression of a miR393-resistant TIR1 gene (mTIR1) in Arabidopsis clearly enhanced salt stress tolerance”
e6“stabilized Chl content”
Claim · model-written summary
Overexpression of mTIR1 led to more proline and anthocyanin accumulation under salt stress.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- overexpression of a miR393-resistant TIR1 gene (mTIR1)e0
- Gene
- mTIR1e0
- Outcome
- proline and anthocyanine7
- Direction
- moree7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“overexpression of a miR393-resistant TIR1 gene (mTIR1) in Arabidopsis clearly enhanced salt stress tolerance”
e7“These plants accumulated more proline and anthocyanin”
Claim · model-written summary
Overexpression of mTIR1 enhanced osmotic stress tolerance.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- overexpression of a miR393-resistant TIR1 gene (mTIR1)e0
- Gene
- mTIR1e0
- Outcome
- osmotic stress tolerancee1
- Direction
- enhancede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“overexpression of a miR393-resistant TIR1 gene (mTIR1) in Arabidopsis clearly enhanced salt stress tolerance”
e1“displayed enhanced osmotic stress tolerance”
Claim · model-written summary
The expression of some salt stress-related genes was altered in the mTIR1 plants.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Outcome
- expression of some salt stress-related genese1
- Qualifier
- alterede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e1“The expression of some salt stress-related genes was altered”
Claim · model-written summary
Sodium content can be reduced in mTIR1 plants under salt stress.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- under salt stresse1
- Outcome
- sodium contente1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e1“sodium content can be reduced in these plants under salt stress”
Claim · model-written summary
Increased auxin signaling from mTIR1 overexpression may enhance salt stress resistance by osmoregulation and Na+ exclusion.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Compound
- auxine1
- Outcome
- salt stress resistancee1
- Qualifier
- osmoregulation and increased Na(+) exclusione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e1“highly increased auxin signaling by overexpression of mTIR1 may trigger auxin-mediated downstream pathways to enhance plant salt stress resistance by osmoregulation and increased Na(+) exclusion”
Claim · model-written summary
miR393 and its target TIR1 have potential roles in the response to salt stress.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- salt stresse1
- Outcome
- response to salt stresse1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e1“found that they played potential roles in response to salt stress”
The same questions in other papers
salinity · physiology: ion balance · Arabidopsis thaliana (thale cress)Positive and negative results
1 paper in the same direction as this paper · 5 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- negative
4 papers more in this group
See all 8 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.