Abstract
Strigolactones (SLs) and hydrogen sulfide (H2S) have both been shown to play important roles in plant growth, development, and environmental adaption. At present, there was no reported on the mechanism by which SLs might participate in H2S-induced salt tolerance. In this study, tomato (Solanum lycopersicum L. ‘Micro-Tom’) was used to investigate the role of SLs and H2S and their relationship under salt stress. Our results show that 25 µM H2S donor sodium hydrosulfide (NaHS) and 15 µM SLs synthetic analogue GR24 significantly promoted tomato seedling growth under salt stress. TIS108 (3 µM, a SLs synthesis inhibitor) and hypotaurine (HT, 300 µM, a H2S scavenger) inhibited the positive role of NaHS and GR24 under salt stress, respectively. Meanwhile, NaHS treatment significantly increased endogenous SL content, the activity of SL synthesis-related enzymes CCD7 and CCD8, and the expression of SL synthesis-related genes (SlD27, SlD14, SlMAX1, and SlMAX2) under salt stress. Further, after silencing a SL synthesis-related gene SlD27, the relieving role of NaHS in salt stress was basically eliminated. Silencing of SlD27 decreased endogenous SL content, while NaHS did not enhance the endogenous SL content in SlD27-silencing seedling. Therefore, H2S might enhance salt tolerance in tomato seedlings by up-regulating the expression of SL synthesis-related gene SlD27.
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Claims 12
Claim · model-written summary
NaHS (25 µM) significantly promoted tomato seedling growth under salt stress.
- Taxon
- tomato
Solanum lycopersicume1 - Organ / stage
- seedlinge1
- Treatment
- 25 µM H2S donor sodium hydrosulfide (NaHS)e1
- Outcome
- seedling growthe1
- Direction
- promotede1
- Qualifier
- under salt stresse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“25 µM H2S donor sodium hydrosulfide (NaHS) and 15 µM SLs synthetic analogue GR24 significantly promoted tomato seedling growth under salt stress”
Claim · model-written summary
GR24 (15 µM) significantly promoted tomato seedling growth under salt stress.
- Taxon
- tomatoSolanum lycopersicume1
- Organ / stage
- seedlinge1
- Treatment
- 15 µM SLs synthetic analogue GR24e1
- Outcome
- seedling growthe1
- Direction
- promotede1
- Qualifier
- under salt stresse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“25 µM H2S donor sodium hydrosulfide (NaHS) and 15 µM SLs synthetic analogue GR24 significantly promoted tomato seedling growth under salt stress”
Claim · model-written summary
TIS108, a strigolactone synthesis inhibitor, inhibited the positive role of NaHS under salt stress.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- TIS108 (3 µM, a SLs synthesis inhibitor)e2
- Outcome
- positive role of NaHSe2
- Direction
- inhibitede2
- Qualifier
- under salt stresse2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato seedlings”
e2“TIS108 (3 µM, a SLs synthesis inhibitor) and hypotaurine (HT, 300 µM, a H2S scavenger) inhibited the positive role of NaHS and GR24 under salt stress, respectively”
Claim · model-written summary
Hypotaurine (300 µM), an H2S scavenger, inhibited the positive role of GR24 under salt stress.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- hypotaurine (HT, 300 µM, a H2S scavenger)e2
- Outcome
- positive rolee2
- Direction
- inhibitede2
- Qualifier
- GR24e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato seedlings”
e2“TIS108 (3 µM, a SLs synthesis inhibitor) and hypotaurine (HT, 300 µM, a H2S scavenger) inhibited the positive role of NaHS and GR24 under salt stress, respectively”
Claim · model-written summary
NaHS significantly increased endogenous strigolactone content under salt stress.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- NaHSe3
- Outcome
- endogenous SL contente3
- Direction
- increasede3
- Qualifier
- under salt stresse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato seedlings”
e3“NaHS treatment significantly increased endogenous SL content, the activity of SL synthesis-related enzymes CCD7 and CCD8, and the expression of SL synthesis-related genes (SlD27, SlD14, SlMAX1, and SlMAX2) under salt stress”
Claim · model-written summary
NaHS significantly increased the activity of the strigolactone synthesis enzymes CCD7 and CCD8 under salt stress.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- NaHSe3
- Gene
- CCD7 and CCD8e3
- Outcome
- activity of SL synthesis-related enzymese3
- Direction
- increasede3
- Qualifier
- under salt stresse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato seedlings”
e3“NaHS treatment significantly increased endogenous SL content, the activity of SL synthesis-related enzymes CCD7 and CCD8, and the expression of SL synthesis-related genes (SlD27, SlD14, SlMAX1, and SlMAX2) under salt stress”
Claim · model-written summary
NaHS significantly increased the expression of the strigolactone synthesis genes SlD27 and SlD14 under salt stress.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- NaHSe3
- Gene
- SlD27, SlD14e3
- Outcome
- expression of SL synthesis-related genese3
- Direction
- increasede3
- Qualifier
- under salt stresse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato seedlings”
e3“NaHS treatment significantly increased endogenous SL content, the activity of SL synthesis-related enzymes CCD7 and CCD8, and the expression of SL synthesis-related genes (SlD27, SlD14, SlMAX1, and SlMAX2) under salt stress”
Claim · model-written summary
NaHS significantly increased the expression of the strigolactone synthesis genes SlMAX1 and SlMAX2 under salt stress.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- NaHSe3
- Gene
- SlMAX1, and SlMAX2e3
- Outcome
- expression of SL synthesis-related genese3
- Direction
- increasede3
- Qualifier
- under salt stresse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato seedlings”
e3“NaHS treatment significantly increased endogenous SL content, the activity of SL synthesis-related enzymes CCD7 and CCD8, and the expression of SL synthesis-related genes (SlD27, SlD14, SlMAX1, and SlMAX2) under salt stress”
Claim · model-written summary
Silencing of SlD27 basically eliminated the relieving role of NaHS in salt stress.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- silencing a SL synthesis-related gene SlD27e4
- Gene
- SlD27e4
- Outcome
- the relieving role of NaHS in salt stresse4
- Direction
- basically eliminatede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato seedlings”
e4“after silencing a SL synthesis-related gene SlD27, the relieving role of NaHS in salt stress was basically eliminated”
Claim · model-written summary
Silencing of SlD27 decreased endogenous strigolactone content.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Silencing of SlD27e5
- Gene
- SlD27e5
- Outcome
- endogenous SL contente5
- Direction
- decreasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato seedlings”
e5“Silencing of SlD27 decreased endogenous SL content”
Claim · model-written summary
NaHS did not enhance endogenous strigolactone content in SlD27-silencing seedlings.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- SlD27-silencing seedlinge6
- Treatment
- NaHSe6
- Gene
- SlD27e6
- Outcome
- endogenous SL contente6
- Direction
- did not enhancee6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato seedlings”
e6“NaHS did not enhance the endogenous SL content in SlD27-silencing seedling”
Claim · model-written summary
H2S may enhance salt tolerance in tomato seedlings by up-regulating the expression of SlD27.
- Taxon
- tomato seedlingsSolanum lycopersicume7
- Gene
- SlD27e7
- Compound
- H2Se7
- Outcome
- salt tolerancee7
- Qualifier
- up-regulating the expressione7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“H2S might enhance salt tolerance in tomato seedlings by up-regulating the expression of SL synthesis-related gene SlD27”
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