Abstract
Abstract Considering the destructive effect of stresses on the photosynthetic apparatus of plants and the important role of light in photosynthesis, we investigated the effect of complementary light on the photosynthetic apparatus under salinity and alkalinity stress conditions. Light-emitting diodes (LEDs) in monochromatic blue (460 nm), monochromatic red (660 nm), dichromatic blue/red (1:3), white/yellow (400–700 nm) at 200 μmol m −2 S −1 , and without LED treatment were used. The stress treatments were in three stages: Control (no stress), Alkalinity (40 mM NaHCO 3 ), and Salinity (80 mM NaCl). Our results showed that salinity and alkaline stress reduced CO 2 assimilation by 62.64% and 40.81%, respectively, compared to the control treatment. The blue light spectrum had the highest increase in water use efficiency (54%) compared to the treatment without supplementary light. Under salinity and alkalinity stress, L, K, and H bands increased and G bands decreased compared to the control treatment, with blue/red light causing the highest increase in L and K bands under both stress conditions. In salinity and alkalinity stress, white/yellow and blue/red spectra caused the highest increase in H bands. Complementary light spectra increased the G band compared to the treatment without complementary light. There was a significant decrease in power indices and quantum power parameters due to salt and alkalinity stress. The use of light spectra, especially blue, red, and blue/red light, increased these parameters compared with treatment without complementary light. Different light spectra have different effects on the photosynthetic apparatus of plants. It can be concluded that using red, blue spectra and their combination can increase the resistance of plants to stress conditions and be adopted as a strategy in planting plants under stress conditions.
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Claims 11
Claim · model-written summary
Salinity reduced carbon dioxide assimilation by 62.64% against control.
- Taxon
- strawberry plants
_single2.jpg?width=60)
Fragaria ×ananassat0 - Treatment
- salinitye0
- Outcome
- CO 2 assimilatione0
- Direction
- reducede0
- Value
- 62.64%e0
- Comparator
- control treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
e0“Our results showed that salinity and alkaline stress reduced CO 2 assimilation by 62.64% and 40.81%, respectively, compared to the control treatment.”
t0“strawberry plants”
Claim · model-written summary
Alkaline stress reduced carbon dioxide assimilation by 40.81% against control.
- Taxon
- strawberry plantsFragaria ×ananassat0
- Treatment
- alkaline stresse0
- Outcome
- CO 2 assimilatione0
- Direction
- reducede0
- Value
- 40.81%e0
- Comparator
- control treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Our results showed that salinity and alkaline stress reduced CO 2 assimilation by 62.64% and 40.81%, respectively, compared to the control treatment.”
t0“strawberry plants”
Claim · model-written summary
Blue light raised water use efficiency most, by 54%, against no supplemental light.
- Taxon
- strawberry plantsFragaria ×ananassat0
- Treatment
- blue light spectrume0
- Outcome
- water use efficiencye0
- Direction
- highest increasee0
- Value
- 54%e0
- Comparator
- treatment without supplementary lighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The blue light spectrum had the highest increase in water use efficiency (54%) compared to the treatment without supplementary light.”
t0“strawberry plants”
Claim · model-written summary
Salinity and alkalinity raised L, K and H bands against control.
- Taxon
- strawberry plantsFragaria ×ananassat0
- Treatment
- salinity and alkalinity stresse0
- Outcome
- L, K, and H bandse0
- Direction
- increasede0
- Comparator
- control treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under salinity and alkalinity stress, L, K, and H bands increased and G bands decreased compared to the control treatment, with blue/red light causing the highest increase in L and K bands under both stress conditions.”
t0“strawberry plants”
Claim · model-written summary
Salinity and alkalinity lowered G bands against control.
- Taxon
- strawberry plantsFragaria ×ananassat0
- Treatment
- salinity and alkalinity stresse0
- Outcome
- G bandse0
- Direction
- decreasede0
- Comparator
- control treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under salinity and alkalinity stress, L, K, and H bands increased and G bands decreased compared to the control treatment, with blue/red light causing the highest increase in L and K bands under both stress conditions.”
t0“strawberry plants”
Claim · model-written summary
Blue and red combined light most increased L and K bands under both stresses.
- Taxon
- strawberry plantsFragaria ×ananassat0
- Treatment
- blue/red lighte0
- Outcome
- L and K bandse0
- Direction
- highest increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under salinity and alkalinity stress, L, K, and H bands increased and G bands decreased compared to the control treatment, with blue/red light causing the highest increase in L and K bands under both stress conditions.”
t0“strawberry plants”
Claim · model-written summary
White and yellow or blue and red light most increased H bands during stress.
- Taxon
- strawberry plantsFragaria ×ananassat0
- Treatment
- white/yellow and blue/red spectrae0
- Outcome
- H bandse0
- Direction
- highest increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In salinity and alkalinity stress, white/yellow and blue/red spectra caused the highest increase in H bands.”
t0“strawberry plants”
Claim · model-written summary
Supplementary light increased G band against no light.
- Taxon
- strawberry plantsFragaria ×ananassat0
- Treatment
- Complementary light spectrae0
- Outcome
- G bande0
- Direction
- increasede0
- Comparator
- treatment without complementary lighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Complementary light spectra increased the G band compared to the treatment without complementary light.”
t0“strawberry plants”
Claim · model-written summary
Salt and alkalinity significantly lowered power indices and quantum power parameters.
- Taxon
- strawberry plantsFragaria ×ananassat0
- Treatment
- salt and alkalinity stresse0
- Outcome
- power indices and quantum power parameterse0
- Direction
- decreasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was a significant decrease in power indices and quantum power parameters due to salt and alkalinity stress.”
t0“strawberry plants”
Claim · model-written summary
Blue, red and combined spectra increased power parameters against no supplemental light.
- Taxon
- strawberry plantsFragaria ×ananassat0
- Treatment
- blue, red, and blue/red lighte0
- Outcome
- these parameterse0
- Direction
- increasede0
- Comparator
- treatment without complementary lighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The use of light spectra, especially blue, red, and blue/red light, increased these parameters compared with treatment without complementary light.”
t0“strawberry plants”
Claim · model-written summary
The authors recommend red, blue and combined light to raise stress resistance in planting.
- Taxon
- strawberry plantsFragaria ×ananassat0
- Outcome
- using red, blue spectra and their combination can increase the resistance of plants to stress conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It can be concluded that using red, blue spectra and their combination can increase the resistance of plants to stress conditions and be adopted as a strategy in planting plants under stress conditions.”
t0“strawberry plants”
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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.