Abstract
Soil salinity is a major constraint in crop production. Of the different strategies to cope with salt stress, a cross-tolerance strategy is inexpensive and easy to adopt. In this study, we investigated heat shock-induced salinity tolerance mechanism in lentil (Lens culinaris Medik cv. BARI Lentil-7). Six-day-old seedlings were exposed to 100 mM NaCl with or without 4-h heat shock (HS) (40 ± 1°C) for three days. The results showed that 100 mM NaCl reduced chlorophyll content, caused severe oxidative damage by reducing antioxidants, increased the toxic methylglyoxal (MG) content and disrupted ion homeostasis by increasing Na+ in the shoots and decreasing K+ in the roots. Heat shock pre-treatment improved the chlorophyll content and reduced oxidative damage by improving reduced ascorbate content, the GSH/GSSG ratio, catalase and ascorbate peroxidase activity under salt stress. Moreover, heat shock reduced the toxic MG content by upregulating glyoxalase system. Heat shock inhibited Na+ accumulation in the shoots and K+ efflux from the roots, as a result, the Na+/K+ ratio reduced both in the roots and shoots under salt stress. We further investigated the HS-induced changes in H2O2 and MG content. We assumed that the dynamics of H2O2 and MG at 1 h intervals during heat shock play a signaling role in activating antioxidant defense and glyoxalase pathway, as a result, plant showed tolerance to salt stress.
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Claims 10
Claim · model-written summary
Salt stress reduced chlorophyll content in lentil.
- Taxon
- lentil
Lens culinarist0 - Treatment
- 100 mM NaCle0
- Outcome
- chlorophyll contente0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“100 mM NaCl reduced chlorophyll content”
t0“Heat Shock-Induced Salt Stress Tolerance in Lentil (Lens culinaris Medik.)”
e1“Six-day-old seedlings were exposed to 100 mM NaCl with or without 4-h heat shock (HS) (40 ± 1°C) for three days.”
Claim · model-written summary
Salt stress caused oxidative damage through reduced antioxidants in lentil.
- Taxon
- lentilLens culinarist0
- Treatment
- 100 mM NaCle1
- Outcome
- oxidative damagee0
- Direction
- causede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“caused severe oxidative damage by reducing antioxidants”
t0“Heat Shock-Induced Salt Stress Tolerance in Lentil (Lens culinaris Medik.)”
e1“Six-day-old seedlings were exposed to 100 mM NaCl with or without 4-h heat shock (HS) (40 ± 1°C) for three days.”
Claim · model-written summary
Salt stress increased methylglyoxal content in lentil.
- Taxon
- lentilLens culinarist0
- Treatment
- 100 mM NaCle1
- Outcome
- methylglyoxal (MG) contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased the toxic methylglyoxal (MG) content”
t0“Heat Shock-Induced Salt Stress Tolerance in Lentil (Lens culinaris Medik.)”
e1“Six-day-old seedlings were exposed to 100 mM NaCl with or without 4-h heat shock (HS) (40 ± 1°C) for three days.”
Claim · model-written summary
Salt stress increased shoot Na+ and decreased root K+ in lentil.
- Taxon
- lentilLens culinarist0
- Treatment
- 100 mM NaCle1
- Outcome
- Na+ in the shoots and decreasing K+ in the rootse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing Na+ in the shoots and decreasing K+ in the roots”
t0“Heat Shock-Induced Salt Stress Tolerance in Lentil (Lens culinaris Medik.)”
e1“Six-day-old seedlings were exposed to 100 mM NaCl with or without 4-h heat shock (HS) (40 ± 1°C) for three days.”
Claim · model-written summary
Heat shock pretreatment improved chlorophyll content under salt stress.
- Taxon
- lentilLens culinarist0
- Treatment
- Heat shock pre-treatmente0
- Outcome
- chlorophyll contente0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Heat shock pre-treatment improved the chlorophyll content”
t0“Heat Shock-Induced Salt Stress Tolerance in Lentil (Lens culinaris Medik.)”
e1“Six-day-old seedlings were exposed to 100 mM NaCl with or without 4-h heat shock (HS) (40 ± 1°C) for three days.”
Claim · model-written summary
Heat shock reduced oxidative damage and improved antioxidant status under salt stress.
- Taxon
- lentilLens culinarist0
- Treatment
- heat shocke1
- Outcome
- oxidative damagee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduced oxidative damage by improving reduced ascorbate content, the GSH/GSSG ratio, catalase and ascorbate peroxidase activity under salt stress”
t0“Heat Shock-Induced Salt Stress Tolerance in Lentil (Lens culinaris Medik.)”
e1“Six-day-old seedlings were exposed to 100 mM NaCl with or without 4-h heat shock (HS) (40 ± 1°C) for three days.”
Claim · model-written summary
Heat shock reduced methylglyoxal content through upregulation of the glyoxalase system.
- Taxon
- lentilLens culinarist0
- Treatment
- heat shocke0
- Outcome
- MG contente0
- Direction
- reducede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“heat shock reduced the toxic MG content by upregulating glyoxalase system”
t0“Heat Shock-Induced Salt Stress Tolerance in Lentil (Lens culinaris Medik.)”
e1“Six-day-old seedlings were exposed to 100 mM NaCl with or without 4-h heat shock (HS) (40 ± 1°C) for three days.”
Claim · model-written summary
Heat shock inhibited shoot Na+ accumulation and root K+ efflux under salt stress.
- Taxon
- lentilLens culinarist0
- Treatment
- Heat shocke0
- Outcome
- Na+ accumulation in the shoots and K+ efflux from the rootse0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Heat shock inhibited Na+ accumulation in the shoots and K+ efflux from the roots”
t0“Heat Shock-Induced Salt Stress Tolerance in Lentil (Lens culinaris Medik.)”
e1“Six-day-old seedlings were exposed to 100 mM NaCl with or without 4-h heat shock (HS) (40 ± 1°C) for three days.”
Claim · model-written summary
Heat shock reduced the Na+/K+ ratio in roots and shoots under salt stress.
- Taxon
- lentilLens culinarist0
- Treatment
- Heat shocke1
- Outcome
- Na+/K+ ratioe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the Na+/K+ ratio reduced both in the roots and shoots under salt stress”
t0“Heat Shock-Induced Salt Stress Tolerance in Lentil (Lens culinaris Medik.)”
e1“Six-day-old seedlings were exposed to 100 mM NaCl with or without 4-h heat shock (HS) (40 ± 1°C) for three days.”
Claim · model-written summary
The authors hypothesize that H2O2 and MG dynamics during heat shock signal antioxidant and glyoxalase defenses.
- Taxon
- lentilLens culinarist0
- Outcome
- antioxidant defense and glyoxalase pathwaye0
- Qualifier
- dynamics of H2O2 and MG at 1 h intervals during heat shocke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We assumed that the dynamics of H2O2 and MG at 1 h intervals during heat shock play a signaling role in activating antioxidant defense and glyoxalase pathway”
t0“Heat Shock-Induced Salt Stress Tolerance in Lentil (Lens culinaris Medik.)”
e1“Six-day-old seedlings were exposed to 100 mM NaCl with or without 4-h heat shock (HS) (40 ± 1°C) for three days.”
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1 paper more in this group
See all 5 papers →heat · physiology: pigments · Lens culinaris (lentil)Results differ
2 in the opposite direction
- negative
- negative
heat · physiology: oxidative · Lens culinaris (lentil)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- negative
- positive
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.