Abstract
Two tomato (Lycopersicon esculentum L.) cultivars: Robin (tolerant) and Roma (sensitive to heat stress) were studied. Chlorophyll fluorescence induction parameters (Fv/Fp, Amax, and Rfd) at 25 °C showed that the PS2 activity was similar for both cultivars. The parameters, measured at 38 °C, decreased in both cultivars, but more in cv. Roma. Exogenous application of 4 mM spermidine improved the plant heat-resistance in both cultivars, and especially in cv. Roma. Analysis of chlorophyll fluorescence changes during linear increase in temperature showed that cv. Robin plants have higher ability to hardening and higher resistance to thermal damage of the pigment-protein complexes structure and the activity of PS2 than cv. Roma.
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Claims 4
Claim · model-written summary
At 25 °C, PS2 activity was similar in Robin and Roma.
- Taxon
- tomato
Solanum lycopersicumt0 - Outcome
- PS2 activitye0
- Direction
- similare0
- Qualifier
- 25 °Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chlorophyll fluorescence induction parameters (Fv/Fp, Amax, and Rfd) at 25 °C showed that the PS2 activity was similar for both cultivars.”
t0“Tomato Plants”
Claim · model-written summary
At 38 °C, fluorescence parameters decreased in both cultivars, more in Roma.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- cv. Romae0
- Treatment
- 38 °Ce0
- Outcome
- parameterse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The parameters, measured at 38 °C, decreased in both cultivars, but more in cv. Roma.”
t0“Tomato Plants”
Claim · model-written summary
Exogenous 4 mM spermidine improved heat resistance in both cultivars, particularly Roma.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- cv. Romae0
- Treatment
- Exogenous application of 4 mM spermidinee0
- Outcome
- plant heat-resistancee0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous application of 4 mM spermidine improved the plant heat-resistance in both cultivars, and especially in cv. Roma.”
t0“Tomato Plants”
Claim · model-written summary
Robin showed greater hardening and resistance to thermal damage than Roma.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- cv. Robine0
- Outcome
- ability to hardening and higher resistance to thermal damage of the pigment-protein complexes structure and the activity of PS2e0
- Direction
- highere0
- Comparator
- cv. Romae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cv. Robin plants have higher ability to hardening and higher resistance to thermal damage of the pigment-protein complexes structure and the activity of PS2 than cv. Roma.”
t0“Tomato Plants”
The same questions in other papers
spermidine · tolerance: abiotic · Solanum lycopersicum (tomato)Results agree
3 papers in the same direction as this paper
- positive
- positive
- 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.