Abstract
Very little is known about the effect of proline addition on the accumulation of inorganic solutes (Na+, K+, Mg2+ and Ca2+) and soluble sugars in the model plant Arabidopsis thaliana. Therefore, the aim of the present study was to assess the effect of 10 mM proline (P) supply in the culture medium on water status and solute accumulation of Arabidopsis thaliana seedlings exposed to 50 mM NaCl (S). The decrease of leaf osmotic potential was more pronounced in P+S as compared to S plants, indicating that former plants were able to accumulate more compounds involved in the osmotic adjustment process. Leaf potassium concentration was reduced by 15, 21 and 25% in P, S and P+S plants respectively, as compared to the control. When compared to S or P treatments, leaf proline and soluble sugar were more accumulated under P+S treatment. Under saline conditions, exogenous proline increased leaf Na+, Ca2+ and Mg2+ concentrations by 27, 281 and 252%, respectively, as compared to the control. Interestingly, proline addition mitigated significantly the deleterious effects of salt on lipid membrane peroxidation. Regarding the contribution of soluble sugars to osmotic adjustment (OA), it amounted to 6% in S or P+S, plants. For proline, its contribution to OA did not exceed 3.4% under salinity (S), whereas in (P+S) treatment, it increased to 14.7%. As a whole, the positive effect of proline exogenous application under saline conditions could be partly explained by the enhanced role of this organic compound in osmoregulation and its likely protective effect against membrane lipid peroxidation.
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Claims 13
Claim · model-written summary
Leaf potassium concentration was reduced by 15% in proline (P) plants compared with the control.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianat0 - Organ / stage
- Leafe1
- Treatment
- proline (P)e0
- Outcome
- Leaf potassium concentratione1
- Direction
- reducede1
- Value
- 15e1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“10 mM proline (P) supply in the culture medium on water status and solute accumulation of Arabidopsis thaliana seedlings exposed to 50 mM NaCl (S)”
e1“Leaf potassium concentration was reduced by 15, 21 and 25% in P, S and P+S plants respectively, as compared to the control”
Claim · model-written summary
Leaf potassium concentration was reduced by 21% in salt-stressed (S) plants compared with the control.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Organ / stage
- Leafe1
- Treatment
- 50 mM NaCl (S)e0
- Outcome
- Leaf potassium concentratione1
- Direction
- reducede1
- Value
- 21e1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“10 mM proline (P) supply in the culture medium on water status and solute accumulation of Arabidopsis thaliana seedlings exposed to 50 mM NaCl (S)”
e1“Leaf potassium concentration was reduced by 15, 21 and 25% in P, S and P+S plants respectively, as compared to the control”
Claim · model-written summary
Leaf potassium concentration was reduced by 25% in P+S plants compared with the control.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Organ / stage
- Leafe1
- Treatment
- P+Se1
- Outcome
- Leaf potassium concentratione1
- Direction
- reducede1
- Value
- 25e1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“10 mM proline (P) supply in the culture medium on water status and solute accumulation of Arabidopsis thaliana seedlings exposed to 50 mM NaCl (S)”
e1“Leaf potassium concentration was reduced by 15, 21 and 25% in P, S and P+S plants respectively, as compared to the control”
Claim · model-written summary
The decrease of leaf osmotic potential was more pronounced in P+S plants than in S plants.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Organ / stage
- leafe2
- Treatment
- P+Se2
- Outcome
- leaf osmotic potentiale2
- Direction
- decreasee2
- Qualifier
- more pronouncede2
- Comparator
- S plantse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e2“The decrease of leaf osmotic potential was more pronounced in P+S as compared to S plants”
Claim · model-written summary
Leaf proline and soluble sugar were more accumulated under P+S treatment than under S or P treatments.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Organ / stage
- leafe3
- Treatment
- P+Se3
- Outcome
- leaf proline and soluble sugare3
- Direction
- more accumulatede3
- Comparator
- S or P treatmentse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e3“When compared to S or P treatments, leaf proline and soluble sugar were more accumulated under P+S treatment”
Claim · model-written summary
Under saline conditions, exogenous proline increased leaf Na+ concentration by 27% compared with the control.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Organ / stage
- leafe4
- Treatment
- exogenous prolinee4
- Outcome
- Na+e4
- Direction
- increasede4
- Value
- 27e4
- Qualifier
- Under saline conditionse4
- Comparator
- controle4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e4“Under saline conditions, exogenous proline increased leaf Na+, Ca2+ and Mg2+ concentrations by 27, 281 and 252%, respectively, as compared to the control”
Claim · model-written summary
Under saline conditions, exogenous proline increased leaf Ca2+ concentration by 281% compared with the control.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Organ / stage
- leafe4
- Treatment
- exogenous prolinee4
- Outcome
- Ca2+e4
- Direction
- increasede4
- Value
- 281e4
- Qualifier
- Under saline conditionse4
- Comparator
- controle4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e4“Under saline conditions, exogenous proline increased leaf Na+, Ca2+ and Mg2+ concentrations by 27, 281 and 252%, respectively, as compared to the control”
Claim · model-written summary
Under saline conditions, exogenous proline increased leaf Mg2+ concentration by 252% compared with the control.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Organ / stage
- leafe4
- Treatment
- exogenous prolinee4
- Outcome
- Mg2+e4
- Direction
- increasede4
- Value
- 252e4
- Qualifier
- Under saline conditionse4
- Comparator
- controle4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e4“Under saline conditions, exogenous proline increased leaf Na+, Ca2+ and Mg2+ concentrations by 27, 281 and 252%, respectively, as compared to the control”
Claim · model-written summary
Proline addition significantly mitigated the deleterious effects of salt on lipid membrane peroxidation.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- proline additione5
- Outcome
- lipid membrane peroxidatione5
- Direction
- mitigatede5
- Comparator
- salte5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e5“proline addition mitigated significantly the deleterious effects of salt on lipid membrane peroxidation”
Claim · model-written summary
Soluble sugars contributed 6% to osmotic adjustment in S or P+S plants.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Outcome
- contribution of soluble sugars to osmotic adjustmente6
- Value
- 6%e6
- Qualifier
- in S or P+Se6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e6“Regarding the contribution of soluble sugars to osmotic adjustment (OA), it amounted to 6% in S or P+S, plants”
Claim · model-written summary
Proline contributed no more than 3.4% to osmotic adjustment under salinity (S).
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Compound
- prolinee7
- Outcome
- contribution to OAe7
- Value
- 3.4%e7
- Qualifier
- under salinity (S)e7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e7“For proline, its contribution to OA did not exceed 3.4% under salinity (S), whereas in (P+S) treatment, it increased to 14.7%”
Claim · model-written summary
Proline contribution to osmotic adjustment increased to 14.7% in P+S treatment compared with salinity (S).
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- P+Se7
- Compound
- prolinee7
- Outcome
- contribution to OAe7
- Direction
- increasede7
- Value
- 14.7%e7
- Comparator
- salinity (S)e7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e7“For proline, its contribution to OA did not exceed 3.4% under salinity (S), whereas in (P+S) treatment, it increased to 14.7%”
Claim · model-written summary
The positive effect of exogenous proline under saline conditions could be partly explained by its enhanced role in osmoregulation.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- proline exogenous applicatione7
- Outcome
- positive effecte7
- Qualifier
- osmoregulatione7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e7“the positive effect of proline exogenous application under saline conditions could be partly explained by the enhanced role of this organic compound in osmoregulation”
The same questions in other papers
proline · nutrient: content · Arabidopsis thaliana (thale cress)Positive and negative results
1 in the opposite direction
- positive
proline · molecular: metabolites · Arabidopsis thaliana (thale cress)Positive and negative results
1 in the opposite direction
- negative
sodium chloride · nutrient: content · Arabidopsis thaliana (thale cress)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- no effect
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.