Abstract
Abstract In nature, soil salinity and fluctuating light (FL) often occur concomitantly. However, it is unknown whether salt stress interacts with FL on leaf photosynthesis, architecture, biochemistry, pigmentation, mineral concentrations, as well as whole‐plant biomass. To elucidate this, tomato ( Solanum lycopersicum ) seedlings were grown under constant light (C, 200 μmol m −2 s −1 ) or FL (5–650 μmol m −2 s −1 ), in combination with no (0 mM NaCl) or moderate (80 mM NaCl) salinity, for 14 days, at identical photoperiods and daily light integrals. FL and salt stress had separate effects on leaf anatomy, biochemistry and photosynthetic capacity: FL reduced leaf thickness as well as nitrogen, chlorophyll and carotenoid contents per unit leaf area, but rarely affected steady‐state and dynamic photosynthetic properties along with abundance of key proteins in the electron transport chain. Salt stress, meanwhile, mainly disorganized chloroplast grana stacking, reduced stomatal density, size and aperture as well as photosynthetic capacity. Plant biomass was affected interactively by light regime and salt stress: FL reduced biomass in salt stressed plants by 17%, but it did not affect biomass of non‐stressed plants. Our results stress the importance of considering FL when inferring effects of salt‐stress on photosynthesis and productivity under fluctuating light intensities.
Abstract from the paper’s OpenAlex record; open copy licensed other-oa. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 8
Claim · model-written summary
Fluctuating light reduced tomato leaf thickness.
- Taxon
- tomato
Solanum lycopersicume1 - Treatment
- FLe0
- Outcome
- leaf thicknesse0
- Direction
- reducede0
- Comparator
- constant lighte1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“FL reduced leaf thickness as well as nitrogen, chlorophyll and carotenoid contents per unit leaf area”
e1“tomato ( Solanum lycopersicum ) seedlings were grown under constant light”
Claim · model-written summary
Fluctuating light reduced tomato leaf nitrogen, chlorophyll and carotenoid contents per unit area.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- FLe0
- Outcome
- nitrogen, chlorophyll and carotenoid contents per unit leaf areae0
- Direction
- reducede0
- Comparator
- constant lighte1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“FL reduced leaf thickness as well as nitrogen, chlorophyll and carotenoid contents per unit leaf area”
e1“tomato ( Solanum lycopersicum ) seedlings were grown under constant light”
Claim · model-written summary
Fluctuating light rarely affected steady-state and dynamic photosynthetic properties and key electron-transport proteins.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- FLe0
- Outcome
- steady‐state and dynamic photosynthetic propertiese0
- Direction
- rarely affectede0
- Comparator
- constant lighte1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“FL reduced leaf thickness as well as nitrogen, chlorophyll and carotenoid contents per unit leaf area, but rarely affected steady‐state and dynamic photosynthetic properties along with abundance of key proteins in the electron transport chain.”
e1“tomato ( Solanum lycopersicum ) seedlings were grown under constant light”
Claim · model-written summary
Salt stress disorganized chloroplast grana stacking.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- Salt stresse0
- Outcome
- chloroplast grana stackinge0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress, meanwhile, mainly disorganized chloroplast grana stacking, reduced stomatal density, size and aperture as well as photosynthetic capacity.”
e1“tomato ( Solanum lycopersicum ) seedlings were grown under constant light”
Claim · model-written summary
Salt stress reduced stomatal density, size and aperture.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- Salt stresse0
- Outcome
- stomatal density, size and aperturee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress, meanwhile, mainly disorganized chloroplast grana stacking, reduced stomatal density, size and aperture as well as photosynthetic capacity.”
e1“tomato ( Solanum lycopersicum ) seedlings were grown under constant light”
Claim · model-written summary
Salt stress reduced photosynthetic capacity.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- Salt stresse0
- Outcome
- photosynthetic capacitye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress, meanwhile, mainly disorganized chloroplast grana stacking, reduced stomatal density, size and aperture as well as photosynthetic capacity.”
e1“tomato ( Solanum lycopersicum ) seedlings were grown under constant light”
Claim · model-written summary
Fluctuating light reduced biomass of salt-stressed tomato plants by 17%.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- FLe0
- Outcome
- biomasse0
- Direction
- reducede0
- Value
- 17%e0
- Qualifier
- salt stressed plantse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“FL reduced biomass in salt stressed plants by 17%, but it did not affect biomass of non‐stressed plants.”
e1“tomato ( Solanum lycopersicum ) seedlings were grown under constant light”
Claim · model-written summary
Fluctuating light did not affect biomass of non-stressed tomato plants.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- FLe0
- Outcome
- biomass of non‐stressed plantse0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“FL reduced biomass in salt stressed plants by 17%, but it did not affect biomass of non‐stressed plants.”
e1“tomato ( Solanum lycopersicum ) seedlings were grown under constant light”
The same questions in other papers
salinity · physiology: gas exchange · Solanum lycopersicum (tomato)Results differ
29 papers in the same direction as this paper
- negative
- negative
- negative
26 papers more in this group
See all 30 papers →light · physiology: pigments · Solanum lycopersicum (tomato)Results differ
16 papers in the same direction as this paper · 45 in the opposite direction
- positive
- negative
- positive
58 papers more in this group
See all 62 papers →salinity · physiology: photosynthesis · Solanum lycopersicum (tomato)Results differ
59 papers in the same direction as this paper · 9 in the opposite direction
- positive
- positive
- positive
65 papers more in this group
See all 69 papers →light · physiology: photosynthesis · Solanum lycopersicum (tomato)Positive and negative results
47 papers in the same direction as this paper · 65 reporting no difference from an alternative
- positive
- positive
- negative
109 papers more in this group
See all 113 papers →light · growth · Solanum lycopersicum (tomato)Positive and negative results
70 papers in the same direction as this paper · 155 in the opposite direction
- no effect
- negative
- positive
222 papers more in this group
See all 226 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.