Abstract
L.) plants to drought and to alter their endogenous brassinosteroid status. Germinated barley seeds were treated with 0.1 nM HBL or HCS solutions for two hours. A water deficit was created by stopping the watering of 7-day-old plants for the next two weeks. Plants responded to drought through growth inhibition, impaired water status, increased lipid peroxidation, differential effects on antioxidant enzymes, intense proline accumulation, altered expression of genes involved in metabolism, and decreased endogenous contents of hormones (28-homobrassinolide, B-ketones, and B-lactones). Pretreatment of plants with HBL reduced the inhibitory effect of drought on fresh and dry biomass accumulation and relative water content, whereas HCS partially reversed the negative effect of drought on fresh biomass accumulation, reduced the intensity of lipid peroxidation, and increased the osmotic potential. Compared with drought stress alone, pretreatment of plants with HCS or HBL followed by drought increased superoxide dismutase activity sevenfold or threefold and catalase activity (by 36%). The short-term action of HBL and HCS in subsequent drought conditions partially restored the endogenous B-ketone and B-lactone contents. Thus, the steroidal phytohormones HBL and HCS increased barley plant resistance to subsequent drought, showing some specificity of action.
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Claims 13
Claim · model-written summary
Pretreatment with HBL reduced the inhibitory effect of drought on fresh and dry biomass accumulation and relative water content in barley.
- Taxon
- Barley
.jpg?width=60)
Hordeum vulgaret0 - Treatment
- Pretreatment of plants with HBLe1
- Outcome
- fresh and dry biomass accumulation and relative water contente1
- Direction
- reducede1
- Comparator
- droughte1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“on Barley Plants under Water Deficit”
e1“Pretreatment of plants with HBL reduced the inhibitory effect of drought on fresh and dry biomass accumulation and relative water content”
Claim · model-written summary
HCS partially reversed the negative effect of drought on fresh biomass accumulation in barley.
- Taxon
- BarleyHordeum vulgaret0
- Treatment
- HCSe2
- Outcome
- fresh biomass accumulatione2
- Direction
- partially reversede2
- Comparator
- droughte2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“on Barley Plants under Water Deficit”
e2“whereas HCS partially reversed the negative effect of drought on fresh biomass accumulation, reduced the intensity of lipid peroxidation, and increased the osmotic potential”
Claim · model-written summary
HCS reduced the intensity of lipid peroxidation under drought in barley.
- Taxon
- BarleyHordeum vulgaret0
- Treatment
- HCSe2
- Outcome
- the intensity of lipid peroxidatione2
- Direction
- reducede2
- Comparator
- droughte2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“on Barley Plants under Water Deficit”
e2“whereas HCS partially reversed the negative effect of drought on fresh biomass accumulation, reduced the intensity of lipid peroxidation, and increased the osmotic potential”
Claim · model-written summary
HCS increased the osmotic potential of drought-stressed barley.
- Taxon
- BarleyHordeum vulgaret0
- Treatment
- HCSe2
- Outcome
- osmotic potentiale2
- Direction
- increasede2
- Comparator
- droughte2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“on Barley Plants under Water Deficit”
e2“whereas HCS partially reversed the negative effect of drought on fresh biomass accumulation, reduced the intensity of lipid peroxidation, and increased the osmotic potential”
Claim · model-written summary
HCS or HBL followed by drought increased superoxide dismutase activity sevenfold or threefold compared with drought alone.
- Taxon
- BarleyHordeum vulgaret0
- Treatment
- HCS or HBL followed by droughte3
- Outcome
- superoxide dismutase activitye3
- Direction
- increasede3
- Value
- sevenfold or threefolde3
- Comparator
- drought stress alonee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“on Barley Plants under Water Deficit”
e3“Compared with drought stress alone, pretreatment of plants with HCS or HBL followed by drought increased superoxide dismutase activity sevenfold or threefold and catalase activity (by 36%)”
Claim · model-written summary
HCS or HBL followed by drought increased catalase activity by 36% compared with drought alone.
- Taxon
- BarleyHordeum vulgaret0
- Treatment
- HCS or HBL followed by droughte3
- Outcome
- catalase activitye3
- Direction
- increasede3
- Value
- 36%e3
- Comparator
- drought stress alonee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“on Barley Plants under Water Deficit”
e3“Compared with drought stress alone, pretreatment of plants with HCS or HBL followed by drought increased superoxide dismutase activity sevenfold or threefold and catalase activity (by 36%)”
Claim · model-written summary
The short-term action of HBL and HCS in subsequent drought partially restored the endogenous B-ketone and B-lactone contents in barley.
- Taxon
- BarleyHordeum vulgaret0
- Treatment
- HBL and HCSe4
- Outcome
- endogenous B-ketone and B-lactone contentse4
- Direction
- partially restorede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“on Barley Plants under Water Deficit”
e4“The short-term action of HBL and HCS in subsequent drought conditions partially restored the endogenous B-ketone and B-lactone contents”
Claim · model-written summary
Drought decreased endogenous contents of hormones (28-homobrassinolide, B-ketones and B-lactones) in barley.
- Taxon
- BarleyHordeum vulgaret0
- Treatment
- droughte5
- Outcome
- endogenous contents of hormonese5
- Direction
- decreasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“on Barley Plants under Water Deficit”
e5“Plants responded to drought through growth inhibition, impaired water status, increased lipid peroxidation, differential effects on antioxidant enzymes, intense proline accumulation, altered expression of genes involved in metabolism, and decreased endogenous contents of hormones (28-homobrassinolide, B-ketones, and B-lactones)”
Claim · model-written summary
Drought inhibited growth of barley plants.
- Taxon
- BarleyHordeum vulgaret0
- Treatment
- droughte5
- Outcome
- growthe5
- Direction
- inhibitione5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“on Barley Plants under Water Deficit”
e5“Plants responded to drought through growth inhibition, impaired water status, increased lipid peroxidation, differential effects on antioxidant enzymes, intense proline accumulation, altered expression of genes involved in metabolism, and decreased endogenous contents of hormones (28-homobrassinolide, B-ketones, and B-lactones)”
Claim · model-written summary
Drought impaired the water status of barley plants.
- Taxon
- BarleyHordeum vulgaret0
- Treatment
- droughte5
- Outcome
- water statuse5
- Direction
- impairede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“on Barley Plants under Water Deficit”
e5“Plants responded to drought through growth inhibition, impaired water status, increased lipid peroxidation, differential effects on antioxidant enzymes, intense proline accumulation, altered expression of genes involved in metabolism, and decreased endogenous contents of hormones (28-homobrassinolide, B-ketones, and B-lactones)”
Claim · model-written summary
Drought increased lipid peroxidation in barley.
- Taxon
- BarleyHordeum vulgaret0
- Treatment
- droughte5
- Outcome
- lipid peroxidatione5
- Direction
- increasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“on Barley Plants under Water Deficit”
e5“Plants responded to drought through growth inhibition, impaired water status, increased lipid peroxidation, differential effects on antioxidant enzymes, intense proline accumulation, altered expression of genes involved in metabolism, and decreased endogenous contents of hormones (28-homobrassinolide, B-ketones, and B-lactones)”
Claim · model-written summary
Drought led to intense proline accumulation in barley.
- Taxon
- BarleyHordeum vulgaret0
- Treatment
- droughte5
- Outcome
- proline accumulatione5
- Direction
- increasee5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“on Barley Plants under Water Deficit”
e5“Plants responded to drought through growth inhibition, impaired water status, increased lipid peroxidation, differential effects on antioxidant enzymes, intense proline accumulation, altered expression of genes involved in metabolism, and decreased endogenous contents of hormones (28-homobrassinolide, B-ketones, and B-lactones)”
Claim · model-written summary
Drought altered the expression of genes involved in metabolism in barley.
- Taxon
- BarleyHordeum vulgaret0
- Treatment
- droughte5
- Outcome
- expression of genes involved in metabolisme5
- Direction
- alterede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“on Barley Plants under Water Deficit”
e5“Plants responded to drought through growth inhibition, impaired water status, increased lipid peroxidation, differential effects on antioxidant enzymes, intense proline accumulation, altered expression of genes involved in metabolism, and decreased endogenous contents of hormones (28-homobrassinolide, B-ketones, and B-lactones)”
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See all 105 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.