Abstract
The response of tomato (Solanum lycopersicum L.) to abiotic stress has been widely investigated. Recent physiological studies focus on the use of osmoprotectants to ameliorate stress damage, but experiments at a field level are scarce. Two tomato cultivars were used for an experiment with saline water (6.57 dS m-1) and subsurface drip irrigation (SDI) in a silty clay soil. Rio Grande is a salinity-tolerant cultivar, while Heinz-2274 is the salt-sensitive cultivar. Exogenous application of proline was done by foliar spray at two concentrations (10 and 20 mg L-1) during the flowering stage. Control plants were treated with saline water without proline. Proline at the lower concentration (10 mg L-1) increased dry mass of different plant organs (leaves, stems, and roots) and it improved various chlorophyll a fluorescence parameters compared with controls. Regarding mineral nutrition, K+ and P were higher in different organs, while low accumulation of Na+ occurred. However, Mg2+ was very high in all tissues of Rio Grande at the higher concentration of proline applied. Thus, the foliar spray of proline at 10 mg L-1 increased the tolerance of both cultivars. The growth of aboveground biomass of Heinz-2274 was enhanced by 63.5%, while Rio Grande improved only by 38.9%.
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Claims 9
Claim · model-written summary
Foliar proline at 10 mg L-1 increased leaf, stem, and root dry mass relative to controls.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- Proline at the lower concentration (10 mg L-1)e0
- Outcome
- dry mass of different plant organs (leaves, stems, and roots)e0
- Direction
- increasede0
- Comparator
- controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Proline at the lower concentration (10 mg L-1) increased dry mass of different plant organs (leaves, stems, and roots) and it improved various chlorophyll a fluorescence parameters compared with controls.”
t0“tomato”
Claim · model-written summary
Foliar proline at 10 mg L-1 improved chlorophyll a fluorescence parameters relative to controls.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Proline at the lower concentration (10 mg L-1)e0
- Outcome
- chlorophyll a fluorescence parameterse0
- Direction
- improvede0
- Comparator
- controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Proline at the lower concentration (10 mg L-1) increased dry mass of different plant organs (leaves, stems, and roots) and it improved various chlorophyll a fluorescence parameters compared with controls.”
t0“tomato”
Claim · model-written summary
K+ had higher levels in different organs under proline treatment.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- different organse0
- Outcome
- K+e0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Regarding mineral nutrition, K+ and P were higher in different organs, while low accumulation of Na+ occurred.”
t0“tomato”
Claim · model-written summary
P had higher levels in different organs under proline treatment.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- different organse0
- Outcome
- Pe0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Regarding mineral nutrition, K+ and P were higher in different organs, while low accumulation of Na+ occurred.”
t0“tomato”
Claim · model-written summary
Na+ had low levels in different organs under proline treatment.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- different organse0
- Outcome
- Na+e0
- Direction
- lowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Regarding mineral nutrition, K+ and P were higher in different organs, while low accumulation of Na+ occurred.”
t0“tomato”
Claim · model-written summary
Rio Grande had very high Mg2+ in all tissues at the higher proline concentration.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- Rio Grandee0
- Organ / stage
- all tissuese0
- Treatment
- higher concentration of prolinee0
- Outcome
- Mg2+e0
- Direction
- very highe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mg2+ was very high in all tissues of Rio Grande at the higher concentration of proline applied.”
t0“tomato”
Claim · model-written summary
The authors concluded that foliar proline at 10 mg L-1 increased tolerance of both cultivars.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- foliar spray of proline at 10 mg L-1e0
- Outcome
- tolerancee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the foliar spray of proline at 10 mg L-1 increased the tolerance of both cultivars.”
t0“tomato”
Claim · model-written summary
Aboveground biomass growth of Heinz-2274 enhanced by 63.5%.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- Heinz-2274e0
- Treatment
- foliar spray of proline at 10 mg L-1e1
- Outcome
- growth of aboveground biomasse0
- Direction
- enhancede0
- Value
- 63.5%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The growth of aboveground biomass of Heinz-2274 was enhanced by 63.5%, while Rio Grande improved only by 38.9%.”
t0“tomato”
e1“the foliar spray of proline at 10 mg L-1 increased the tolerance of both cultivars.”
Claim · model-written summary
Aboveground biomass growth of Rio Grande improved by 38.9%.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- Rio Grandee0
- Treatment
- foliar spray of proline at 10 mg L-1e1
- Outcome
- growth of aboveground biomasse0
- Direction
- improvede0
- Value
- 38.9%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The growth of aboveground biomass of Heinz-2274 was enhanced by 63.5%, while Rio Grande improved only by 38.9%.”
t0“tomato”
e1“the foliar spray of proline at 10 mg L-1 increased the tolerance of both cultivars.”
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See all 253 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.