Abstract
In order to elucidate the regulation effects of DA-6 on the photosynthesis of strawberry under different light intensities,DA-6 of 20 mg/L,was sprayed on the leaves of the seedlings of 'Sweet Charlie' strawberry under 100%,70% and 50% sunlight.The leaf gas exchange parameters,activities of Rubisco and FDPase,antioxidant enzyme activities were measured.The results showed that under shade condition,the leaf photosynthetic rate(Pn),stomatal conductance(Gs),transpiration rate(Tr),Rubisco and FDPase activities decreased,but the intercellular CO2 concentration(Ci) increased.It is thus clear that the decrease of Pn under low light intensity is mainly due to the non stomatal limitation and closely related to the decrease of Rubisco and FDPase.However,foliar spraying of DA-6 increased the leaf Pn,Gs,Tr and activities of Rubisco,FDPase,SOD,CAT and APX,but reduced the O2-production rate.The improvement of photosynthesis was much more significant under 50% sunlight.
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Claims 8
Claim · model-written summary
Shade reduced leaf photosynthetic rate, stomatal conductance and transpiration.
- Taxon
- strawberry
_single2.jpg?width=60)
Fragaria ×ananassat0 - Treatment
- shade conditione0
- Outcome
- leaf photosynthetic rate(Pn),stomatal conductance(Gs),transpiration rate(Tr)e0
- Direction
- decreasede0
- Comparator
- 100%e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
e0“under shade condition,the leaf photosynthetic rate(Pn),stomatal conductance(Gs),transpiration rate(Tr),Rubisco and FDPase activities decreased”
t0“strawberry”
e1“under 100%,70% and 50% sunlight”
Claim · model-written summary
Shade reduced Rubisco and FDPase activities.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- shade conditione0
- Gene
- Rubisco and FDPasee0
- Outcome
- Rubisco and FDPase activitiese0
- Direction
- decreasede0
- Comparator
- 100%e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under shade condition,the leaf photosynthetic rate(Pn),stomatal conductance(Gs),transpiration rate(Tr),Rubisco and FDPase activities decreased”
t0“strawberry”
e1“under 100%,70% and 50% sunlight”
Claim · model-written summary
Shade increased intercellular CO2 concentration.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- shade conditione1
- Outcome
- intercellular CO2 concentration(Ci)e0
- Direction
- increasede0
- Comparator
- 100%e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but the intercellular CO2 concentration(Ci) increased”
e1“under shade condition”
e2“under 100%,70% and 50% sunlight”
t0“strawberry”
Claim · model-written summary
The authors attribute shade-related Pn reduction mainly to non stomatal limitation and reduced Rubisco and FDPase.
- Taxon
- strawberryFragaria ×ananassat0
- Gene
- Rubisco and FDPasee0
- Outcome
- decrease of Pne0
- Qualifier
- non stomatal limitatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the decrease of Pn under low light intensity is mainly due to the non stomatal limitation and closely related to the decrease of Rubisco and FDPase”
t0“strawberry”
Claim · model-written summary
DA-6 foliar spraying increased photosynthetic gas exchange.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- foliar spraying of DA-6e0
- Outcome
- leaf Pn,Gs,Tre0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar spraying of DA-6 increased the leaf Pn,Gs,Tr and activities of Rubisco,FDPase,SOD,CAT and APX”
t0“strawberry”
Claim · model-written summary
DA-6 foliar spraying increased Rubisco, FDPase, SOD, CAT and APX activities.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- foliar spraying of DA-6e0
- Gene
- Rubisco,FDPase,SOD,CAT and APXe0
- Outcome
- activities of Rubisco,FDPase,SOD,CAT and APXe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar spraying of DA-6 increased the leaf Pn,Gs,Tr and activities of Rubisco,FDPase,SOD,CAT and APX”
t0“strawberry”
Claim · model-written summary
DA-6 foliar spraying reduced O2-production rate.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- foliar spraying of DA-6e0
- Outcome
- O2-production ratee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar spraying of DA-6 increased the leaf Pn,Gs,Tr and activities of Rubisco,FDPase,SOD,CAT and APX,but reduced the O2-production rate”
t0“strawberry”
Claim · model-written summary
DA-6 improved photosynthesis more significantly under 50% sunlight.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- foliar spraying of DA-6e1
- Outcome
- photosynthesise0
- Direction
- improvemente0
- Qualifier
- under 50% sunlighte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The improvement of photosynthesis was much more significant under 50% sunlight.”
e1“foliar spraying of DA-6”
t0“strawberry”
The same questions in other papers
shade · physiology: photosynthesis · Fragaria x ananassa (strawberry)Positive and negative results
3 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
2 papers more in this group
See all 6 papers →application · physiology: photosynthesis · Fragaria x ananassa (strawberry)Positive and negative results
8 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
6 papers more in this group
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.