Abstract
Temperature changes and salt accumulation are among the most common abiotic factors affecting plants in agricultural and natural ecosystems. The different responses of plants to these factors have been widely investigated in previous works. However, detailed mechanism of the early photosynthetic response (first 24 h) has been poorly studied. The aim of the work was to monitor the early response of adult Arabidopsis thaliana plants exposed to different thermal (cold and heat) and salt conditions. Detailed evaluation of the efficiency of photosystem II was done, and the various routes of energy output as well as measurements of the contents of H2O2, proline, and photosynthetic pigments at different times during the first 24 h of treatment were examined. The conditions used in the study were those that caused a weak stress with time of exposure. Cold-treated plants showed the most continuous inhibitory effect on photosynthetic activity, with a fast metabolic slowdown (reduced PSII efficiency and decreased pigment contents), although they also demonstrated clear acclimation responses (increased heat dissipation and protein content). Heat-treated plants showed a late but stronger effect on photosynthesis with significantly increased quantum yield of nonregulated energy dissipation (ΨNO) and H2O2 content at the last measurements. Finally, salt-induced oxidative stress (increased H2O2 content), decreased PSII efficiency and pigment content.
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Claims 11
Claim · model-written summary
Cold treatment continuously inhibited photosynthetic activity.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianat0 - Treatment
- Cold-treatede0
- Outcome
- photosynthetic activitye0
- Direction
- inhibitorye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“Cold-treated plants showed the most continuous inhibitory effect on photosynthetic activity”
Claim · model-written summary
Cold treatment reduced PSII efficiency.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- Cold-treatede0
- Outcome
- PSII efficiencye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“Cold-treated plants showed the most continuous inhibitory effect on photosynthetic activity, with a fast metabolic slowdown (reduced PSII efficiency and decreased pigment contents)”
Claim · model-written summary
Cold treatment decreased pigment contents.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- Cold-treatede0
- Outcome
- pigment contentse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“Cold-treated plants showed the most continuous inhibitory effect on photosynthetic activity, with a fast metabolic slowdown (reduced PSII efficiency and decreased pigment contents)”
Claim · model-written summary
Cold treatment increased heat dissipation.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- Cold-treatede0
- Outcome
- heat dissipatione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“Cold-treated plants showed the most continuous inhibitory effect on photosynthetic activity, with a fast metabolic slowdown (reduced PSII efficiency and decreased pigment contents), although they also demonstrated clear acclimation responses (increased heat dissipation and protein content)”
Claim · model-written summary
Cold treatment increased protein content.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- Cold-treatede0
- Outcome
- protein contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“Cold-treated plants showed the most continuous inhibitory effect on photosynthetic activity, with a fast metabolic slowdown (reduced PSII efficiency and decreased pigment contents), although they also demonstrated clear acclimation responses (increased heat dissipation and protein content)”
Claim · model-written summary
Heat treatment had a late but stronger effect on photosynthesis.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- Heat-treatede0
- Outcome
- photosynthesise0
- Qualifier
- late but strongere0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“Heat-treated plants showed a late but stronger effect on photosynthesis”
Claim · model-written summary
Heat treatment significantly increased quantum yield of nonregulated energy dissipation at the last measurement.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- Heat-treatede0
- Outcome
- quantum yield of nonregulated energy dissipation (ΨNO)e0
- Direction
- increasede0
- Qualifier
- at the last measurementse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“Heat-treated plants showed a late but stronger effect on photosynthesis with significantly increased quantum yield of nonregulated energy dissipation (ΨNO) and H2O2 content at the last measurements.”
Claim · model-written summary
Heat treatment significantly increased H2O2 content at the last measurement.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- Heat-treatede0
- Outcome
- H2O2 contente0
- Direction
- increasede0
- Qualifier
- at the last measurementse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“Heat-treated plants showed a late but stronger effect on photosynthesis with significantly increased quantum yield of nonregulated energy dissipation (ΨNO) and H2O2 content at the last measurements.”
Claim · model-written summary
Salt stress increased H2O2 content.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- salte0
- Outcome
- H2O2 contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“salt-induced oxidative stress (increased H2O2 content), decreased PSII efficiency and pigment content.”
Claim · model-written summary
Salt stress decreased PSII efficiency.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- salte0
- Outcome
- PSII efficiencye0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“salt-induced oxidative stress (increased H2O2 content), decreased PSII efficiency and pigment content.”
Claim · model-written summary
Salt stress decreased pigment content.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- salte0
- Outcome
- pigment contente0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“salt-induced oxidative stress (increased H2O2 content), decreased PSII efficiency and pigment content.”
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salinity · physiology: oxidative · Arabidopsis thaliana (thale cress)Results agree
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See all 10 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.