Abstract
Strawberry is one of the plants sensitive to salt and alkalinity stress. Light quality affects plant growth and metabolic activities. However, there is no clear answer in the literature on how light can improve the performance of the photosynthetic apparatus of this species under salt and alkalinity stress. The aim of this work was to investigate the effects of different spectra of supplemental light on strawberry (cv. Camarosa) under salt and alkalinity stress conditions. Light spectra of blue (with peak 460 nm), red (with peak 660 nm), blue/red (1:3), white/yellow (1:1) (400-700 nm) and ambient light were used as control. There were three stress treatments: control (no stress), alkalinity (40 mM NaHCO3), and salinity (80 mM NaCl). Under stress conditions, red and red/blue light had a positive effect on CO2 assimilation. In addition, blue/red light increased intrinsic water use efficiency (WUEi) under both stress conditions. Salinity and alkalinity stress decreased OJIP curves compared to the control treatment. Blue light caused an increase in its in plants under salinity stress, and red and blue/red light caused an increase in its in plants under alkalinity. Both salt and alkalinity stress caused a significant reduction in photosystem II (PSII) performance indices and quantum yield parameters. Adjustment of light spectra, especially red light, increased these parameters. It can be concluded that the adverse effects of salt and alkalinity stress on photosynthesis can be partially alleviated by changing the light spectra.
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Claims 14
Claim · model-written summary
Red light improved CO2 assimilation under stress.
- Taxon
- strawberry
_single2.jpg?width=60)
Fragaria ×ananassat0 - Treatment
- rede0
- Outcome
- CO2 assimilatione0
- Direction
- positive effecte0
- Comparator
- ambient lighte1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
e0“Under stress conditions, red and red/blue light had a positive effect on CO2 assimilation.”
t0“strawberry plants growing under salt and alkalinity stress”
e1“ambient light were used as control.”
Claim · model-written summary
Red/blue light improved CO2 assimilation under stress.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- red/blue lighte0
- Outcome
- CO2 assimilatione0
- Direction
- positive effecte0
- Comparator
- ambient lighte1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under stress conditions, red and red/blue light had a positive effect on CO2 assimilation.”
t0“strawberry plants growing under salt and alkalinity stress”
e1“ambient light were used as control.”
Claim · model-written summary
Blue/red light increased intrinsic water use efficiency under both stresses.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- blue/red lighte0
- Outcome
- intrinsic water use efficiency (WUEi)e0
- Direction
- increasede0
- Comparator
- ambient lighte1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“blue/red light increased intrinsic water use efficiency (WUEi) under both stress conditions.”
t0“strawberry plants growing under salt and alkalinity stress”
e1“ambient light were used as control.”
Claim · model-written summary
Salinity decreased OJIP curves.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- Salinitye0
- Outcome
- OJIP curvese0
- Direction
- decreasede0
- Comparator
- control treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity and alkalinity stress decreased OJIP curves compared to the control treatment.”
t0“strawberry plants growing under salt and alkalinity stress”
e1“ambient light were used as control.”
Claim · model-written summary
alkalinity decreased OJIP curves.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- alkalinitye0
- Outcome
- OJIP curvese0
- Direction
- decreasede0
- Comparator
- control treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity and alkalinity stress decreased OJIP curves compared to the control treatment.”
t0“strawberry plants growing under salt and alkalinity stress”
e1“ambient light were used as control.”
Claim · model-written summary
Blue light increased OJIP curves under salinity.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- Blue lighte0
- Outcome
- itse0
- Direction
- increasee0
- Qualifier
- salinity stresse0
- Comparator
- ambient lighte1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Blue light caused an increase in its in plants under salinity stress”
t0“strawberry plants growing under salt and alkalinity stress”
e1“ambient light were used as control.”
Claim · model-written summary
red light increased OJIP curves under alkalinity.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- red lighte0
- Outcome
- itse0
- Direction
- increasee0
- Qualifier
- alkalinitye0
- Comparator
- ambient lighte1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“red and blue/red light caused an increase in its in plants under alkalinity.”
t0“strawberry plants growing under salt and alkalinity stress”
e1“ambient light were used as control.”
Claim · model-written summary
blue/red light increased OJIP curves under alkalinity.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- blue/red lighte0
- Outcome
- itse0
- Direction
- increasee0
- Qualifier
- alkalinitye0
- Comparator
- ambient lighte1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“red and blue/red light caused an increase in its in plants under alkalinity.”
t0“strawberry plants growing under salt and alkalinity stress”
e1“ambient light were used as control.”
Claim · model-written summary
salt stress reduced photosystem II (PSII) performance indices.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- salte0
- Outcome
- photosystem II (PSII) performance indicese0
- Direction
- reductione0
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both salt and alkalinity stress caused a significant reduction in photosystem II (PSII) performance indices and quantum yield parameters.”
t0“strawberry plants growing under salt and alkalinity stress”
e1“ambient light were used as control.”
Claim · model-written summary
salt stress reduced quantum yield parameters.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- salte0
- Outcome
- quantum yield parameterse0
- Direction
- reductione0
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both salt and alkalinity stress caused a significant reduction in photosystem II (PSII) performance indices and quantum yield parameters.”
t0“strawberry plants growing under salt and alkalinity stress”
e1“ambient light were used as control.”
Claim · model-written summary
alkalinity stress reduced photosystem II (PSII) performance indices.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- alkalinitye0
- Outcome
- photosystem II (PSII) performance indicese0
- Direction
- reductione0
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both salt and alkalinity stress caused a significant reduction in photosystem II (PSII) performance indices and quantum yield parameters.”
t0“strawberry plants growing under salt and alkalinity stress”
e1“ambient light were used as control.”
Claim · model-written summary
alkalinity stress reduced quantum yield parameters.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- alkalinitye0
- Outcome
- quantum yield parameterse0
- Direction
- reductione0
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both salt and alkalinity stress caused a significant reduction in photosystem II (PSII) performance indices and quantum yield parameters.”
t0“strawberry plants growing under salt and alkalinity stress”
e1“ambient light were used as control.”
Claim · model-written summary
Light spectrum adjustment increased photosystem II (PSII) performance indices.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- Adjustment of light spectrae0
- Outcome
- photosystem II (PSII) performance indicese2
- Direction
- increasede0
- Comparator
- ambient lighte1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Adjustment of light spectra, especially red light, increased these parameters.”
t0“strawberry plants growing under salt and alkalinity stress”
e1“ambient light were used as control.”
e2“photosystem II (PSII) performance indices and quantum yield parameters”
Claim · model-written summary
Light spectrum adjustment increased quantum yield parameters.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- Adjustment of light spectrae0
- Outcome
- quantum yield parameterse2
- Direction
- increasede0
- Comparator
- ambient lighte1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Adjustment of light spectra, especially red light, increased these parameters.”
t0“strawberry plants growing under salt and alkalinity stress”
e1“ambient light were used as control.”
e2“photosystem II (PSII) performance indices and quantum yield parameters”
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